CN104847524B - Preparation method of PVD (physical vapor deposition) piston ring - Google Patents
Preparation method of PVD (physical vapor deposition) piston ring Download PDFInfo
- Publication number
- CN104847524B CN104847524B CN201510223166.4A CN201510223166A CN104847524B CN 104847524 B CN104847524 B CN 104847524B CN 201510223166 A CN201510223166 A CN 201510223166A CN 104847524 B CN104847524 B CN 104847524B
- Authority
- CN
- China
- Prior art keywords
- transition zones
- preparation
- piston ring
- pvd
- targets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 238000005240 physical vapour deposition Methods 0.000 title 2
- 230000007704 transition Effects 0.000 claims abstract description 68
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 239000002131 composite material Substances 0.000 claims abstract description 26
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 238000000151 deposition Methods 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 230000008021 deposition Effects 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 15
- 229910052786 argon Inorganic materials 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
- KRQUFUKTQHISJB-YYADALCUSA-N 2-[(E)-N-[2-(4-chlorophenoxy)propoxy]-C-propylcarbonimidoyl]-3-hydroxy-5-(thian-3-yl)cyclohex-2-en-1-one Chemical compound CCC\C(=N/OCC(C)OC1=CC=C(Cl)C=C1)C1=C(O)CC(CC1=O)C1CCCSC1 KRQUFUKTQHISJB-YYADALCUSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000004062 sedimentation Methods 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 235000012489 doughnuts Nutrition 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005238 degreasing Methods 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 239000011651 chromium Substances 0.000 description 60
- 239000010410 layer Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000002242 deionisation method Methods 0.000 description 2
- 229910019590 Cr-N Inorganic materials 0.000 description 1
- 229910019588 Cr—N Inorganic materials 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009149 molecular binding Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F5/00—Piston rings, e.g. associated with piston crown
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/228—Gas flow assisted PVD deposition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0403—Refractory metals, e.g. V, W
- F05C2201/0406—Chromium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physical Vapour Deposition (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A PVD piston ring comprises a piston ring base body and a composite coating adhered to the surface of the piston ring base body, wherein the composite coating is 10-20 microns thick and comprises a nanometer composite gradient transition layer and a CrN layer which are sequentially arranged from inside to outside, the nanometer composite gradient transition layer comprises a Cr bottoming layer, a Cr transition layer and a CrN transition layer which are sequentially arranged from inside to outside, during preparation, the Cr bottoming layer is firstly deposited on the surface of the piston ring base body, then the Cr/CrN nanometer composite gradient transition layer is deposited layer by layer, and then the CrN layer is deposited by a method of circularly controlling bias voltage. The design not only obtains excellent membrane-substrate binding force, but also has small friction coefficient and low wear rate, and obviously reduces the friction power loss and fuel consumption of the engine.
Description
Technical field
The present invention relates to a kind of PVD piston rings, more particularly to a kind of PVD piston rings and preparation method thereof, it is particularly applicable to
Reduce engine friction horsepower loss and fuel consumption.
Background technology
Piston ring and cylinder sleeve are a pair of important friction pairs in automobile engine, and the quality of its tribological property is directly affected
The important indicators such as power output, durability, fuel economy, oil consumption and the burning and exhausting of engine, therefore are changed
The tribological property of kind cylinder liner-piston group is significant.In order to improve the performance of piston ring, except being designed optimization
Outside being updated with material, engineers are more likely to use process for treating surface, such as chromium plating, ionic nitriding.However, due to working as
Preceding automobile engine especially heavy duty diesel engine, to high power density, high reliability, low burn oil consumption and low waste gas
The direction of discharge is developed, and traditional surface treatment method can not meet demand.Physical gas phase deposition technology（PVD）It is used as one
Kind relatively ripe emerging technology is modified work on the surface of engine piston ring by more and more extensive concern and again
Depending on.
Chinese patent：Notification number is CN101430004B, and the day for announcing discloses one for the patent of invention on June 2nd, 2010
PVD chromium based ceramic composite coating piston rings and preparation method thereof are planted, the composite coating is by tack coat, main wearing layer and antifriction layer structure
Into tack coat is Cr, and main wearing layer is Cr and the Cr/CrN laminated coatings of CrN alternating compositions on tack coat, and antifriction layer exists
Main wear-resisting layer surface, is Cr and Cr2O3The Cr/ Cr alternately constituted2O3Laminated coating.Although the composite coating has good knot
With joint efforts, wear-resisting and corrosion resistance, can increase substantially the service life of piston ring, but it can not reduce engine friction horsepower
Loss and fuel consumption.
The content of the invention
The purpose of the present invention is to overcome that engine friction horsepower loss and fuel consumption can not be reduced present in prior art
The problem of can significantly reduce PVD piston rings and preparation method thereof of engine friction horsepower loss and fuel consumption there is provided a kind of.
To realize object above, technical scheme is as follows：
A kind of PVD piston rings, including piston ring substrate and its composite coating of surface attachment；
The composite coating include set gradually from the inside to the outside nano combined gradient transitional lay, CrN layers, wherein, it is described
Nano combined gradient transitional lay includes Cr prime coats, Cr transition zones, the CrN transition zones set gradually from the inside to the outside.
The nano combined gradient transitional lay also includes CrC transition zones, and the CrC transition zones are located at Cr transition zones, CrN transition
Between layer.
The thickness of the composite coating is 10-20 μm.
A kind of preparation method of PVD piston rings, comprises the following steps successively：
1st, it will be first placed in by the piston ring substrate tentatively cleaned in vacuum chamber, be passed through argon gas and carry out aura cleaning, then
Ignited metal Cr targets, and Cr prime coats are deposited under 450-750V biass；
2nd, bias is first down to deposition Cr transition zones after 140-160V, turns off metal Cr targets；
3rd, first stop being passed through argon gas, nitrogen, then the metal Cr targets that ignite then are passed through into vacuum chamber, bias is down to 130-
15-20min is deposited after 140V；
4th, continue to deposit to predetermined sedimentation time under 80-200V biass, now, PVD piston rings are prepared and finished.
The step 4 includes following operation successively：
A, 100-150V bias under deposit 15-20min；
B, 80-100V bias under deposit 15-20min；
C, 150-200V bias under deposit 15-20min；
D, circulating repetition operation a-c, until reaching predetermined sedimentation time.
The preparation method also includes the preparation process of CrC transition zones, and the step is located between step 2, step 3；
The preparation process of the CrC transition zones refers to：First ignite metal Cr targets and C targets deposition CrC transition zones simultaneously, then closes
Close metal Cr targets and C targets.
In step 1,
The preliminary cleaning refers to：Piston ring substrate 1 is first subjected to degreasing and rust removal, then uses acetone, alcohol, deionization successively
Water is dried after being cleaned by ultrasonic to it；
The aura cleaning refers to：First the piston ring substrate through tentatively cleaning is placed in vacuum chamber, then at 0.007-
Hot donut cavity wall then passes to 350-400sccm to 1.5-2.5h is incubated after 290-310 DEG C under 0.008Pa vacuum
Argon gas, and clean 25-35min in aura under 700-800V back bias voltage.
In the step 1, the electric current in metal Cr targets source is 100-110A, and the time of deposition Cr prime coats is 1-3min；
In the step 2, deposition Cr transition zones, the time of deposition CrC transition zones are 5-6min.
In the step 3, the vacuum of vacuum chamber is 1.9-2.3Pa, and the flow for being passed through nitrogen is 180-200sccm, gold
The electric current for belonging to Cr targets source is 120-130A.
Compared with prior art, beneficial effects of the present invention are：
1st, composite coating includes nano combined gradient transitional lay, and nano combined gradient in a kind of PVD piston rings of the invention
Transition zone includes Cr prime coats, Cr transition zones, the CrN transition zones set gradually from the inside to the outside, and the gradient transitional lay can progressively be built
Stand and strengthen the molecular binding affinities between coating and piston ring substrate, while weakening the superposition of transition interlayer internal stress, so that significantly
Strengthen the adhesion of coating, can be played one's part to the full under the harsh operating mode of piston ring-cylinder liner, and effectively reduction is started
Machine frictional work loses and fuel consumption.Therefore, present invention reduces engine friction horsepower loss and fuel consumption.
2nd, CrC transition zones are additionally provided between Cr transition zones, CrN transition zones in a kind of PVD piston rings of the invention, the CrC
Transition zone can be between gradient coatings element and piston ring substrate chemical affinity, further lifting coating and piston ring substrate
Adhesion.Therefore, the present invention further improves the adhesion of coating and piston ring substrate.
3rd, step 1 deposits Cr bottoming using under 450-750V biass in a kind of preparation method of PVD piston rings of the invention
The method of layer, the high bias of the 450-750V can promote the argon ion in environment and chromium ion bombardment piston ring substrate surface, both
Its surface can be activated, high surface energy is carried, the high density of defects of rim surface zona, such as room, interstitial atom, dislocation can be also formed, on
State 2 points of adhesions for greatly facilitating lifting coating and piston ring substrate.Therefore, the inventive method causes coating and piston
There is remarkable adhesion between ring base.
4th, step 5 is provided with 100-150V, 80-100V, 150-200V in a kind of preparation method of PVD piston rings of the invention
Three bias ranges are deposited, and circulate operation successively, and this method biases size to adjust piston ring group by loop control
The temperature of body, makes it float in a suitable scope, and the surface that the suitable temperature range can strengthen piston ring substrate is lived
Property, increase Enhancing Nucleation Density, reduce interface hole, improve the compactness and intensity of coating, obtain good microstructure, so that
So that PVD piston rings have outstanding wear-resisting, friction reduction characteristics, while reducing the wear rate of cylinder sleeve, engine is greatly improved
Reliability and durability.Therefore, the inventive method improves the abrasion resistance properties of coating.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
Fig. 3 is the piston ring section SEM shape appearance figures of embodiment 1.
Fig. 4 is frictional work bench test test result of the invention.
In figure：Piston ring substrate 1, composite coating 2, nano combined gradient transitional lay 3, Cr prime coats 31, Cr transition zones 32,
CrN transition zones 33, CrC transition zones 34, CrN layers 4.
Embodiment
The present invention is further detailed explanation with embodiment for explanation below in conjunction with the accompanying drawings.
Referring to Fig. 1, Fig. 2, a kind of PVD piston rings, including piston ring substrate 1 and its composite coating of surface attachment 2；
The composite coating 2 includes nano combined gradient transitional lay 3, the CrN layers 4 set gradually from the inside to the outside, wherein, institute
State Cr prime coats 31, Cr transition zones 32, CrN transition zones 33 that nano combined gradient transitional lay 3 includes setting gradually from the inside to the outside.
The nano combined gradient transitional lay 3 also include CrC transition zones 34, the CrC transition zones 34 be located at Cr transition zones 32,
Between CrN transition zones 33.
The thickness of the composite coating 2 is 10-20 μm.
The manufacture material of the piston ring substrate 1 is nitrated steel.
A kind of preparation method of PVD piston rings, comprises the following steps successively：
1st, it will be first placed in by the piston ring substrate 1 tentatively cleaned in vacuum chamber, be passed through argon gas and carry out aura cleaning, then
Ignite metal Cr targets, the deposition Cr prime coats 31 under 450-750V biass；
2nd, first bias is down to after 140-160V and deposits Cr transition zones 32, turn off metal Cr targets；
3rd, first stop being passed through argon gas, nitrogen, then the metal Cr targets that ignite then are passed through into vacuum chamber, bias is down to 130-
15-20min is deposited after 140V；
4th, continue to deposit to predetermined sedimentation time under 80-200V biass, now, PVD piston rings are prepared and finished.
The step 5 includes following operation successively：
A, 100-150V bias under deposit 15-20min；
B, 80-100V bias under deposit 15-20min；
C, 150-200V bias under deposit 15-20min；
D, circulating repetition operation a-c, until reaching predetermined sedimentation time.
The preparation method also includes the preparation process of CrC transition zones, and the step is located between step 2, step 3；
The preparation process of the CrC transition zones refers to：First ignite metal Cr targets and C targets deposition CrC transition zones 34 simultaneously, then
Close metal Cr targets and C targets.
In step 1,
The preliminary cleaning refers to：Piston ring substrate 1 is first subjected to degreasing and rust removal, then uses acetone, alcohol, deionization successively
Water is dried after being cleaned by ultrasonic to it；
The aura cleaning refers to：First the piston ring substrate 1 through tentatively cleaning is placed in vacuum chamber, then at 0.007-
Hot donut cavity wall then passes to 350-400sccm to 1.5-2.5h is incubated after 290-310 DEG C under 0.008Pa vacuum
Argon gas, and clean 25-35min in aura under 700-800V back bias voltage.
In the step 1, the electric current in metal Cr targets source is 100-110A, and the time of deposition Cr prime coats 31 is 1-3min；
In the step 2, deposition Cr transition zones 32, the time of deposition CrC transition zones 34 are 5-6min.
In the step 3, the vacuum of vacuum chamber is 1.9-2.3Pa, and the flow for being passed through nitrogen is 180-200sccm, gold
The electric current for belonging to Cr targets source is 120-130A.
The principle of the present invention is described as follows：
The present invention deposits one layer of nano combined gradient transitional lay of Cr/CrC/CrN by elder generation on piston ring substrate 1, then
The method for biasing size using loop control deposits CrN layers, prepares with remarkable film-substrate cohesion（That is composite coating 2
With the adhesion of piston ring substrate 1）, the PVD piston rings that coefficient of friction is small, wear rate is low, can so as to lift engine
By property and durability, the remarkable film-substrate cohesion and excellent wear resistant friction reducing cause frictional work effect drops in PVD parts convex
It is aobvious, so as to reach the effect of reduction engine consumption.
In structure of the present invention,
Nano combined gradient transitional lay 3：The foundation of nano combined gradient transitional lay 3 enables to the preferably growth of CrN layers 4
On the surface of piston ring substrate 1.In being usually Fe, C, N etc., Cr transition zones 32 due to the main component of piston ring substrate 1
Cr Cr-C and Cr-N molecular links can be combined to form with C, N, CrC transition zones and CrN transition zones then further strengthen this molecule
Between combine so that reach progressively enhancing composite coating 2 and piston ring substrate 1 between adhesion effect.
Coating layer thickness：It is difficult the effect for giving full play of coating if the thickness of composite coating 2 is less than 10 μm, if compound
The thickness of coating 2 is more than 20 μm, then coating internal stress is too high, easily peels off, therefore, and the present invention is by its thickness control in 10-20 μ
m.Further, since the thickness of each transition zone is relatively thin, therefore helps to reduce the internal stress of coating, further lifting coating with
The adhesion of piston ring substrate.
To obtain remarkable film-substrate cohesion, present invention employs the method for nano combined gradient transitional lay；It is good to obtain
Good coating quality, reduces coating internal stress, and further lifts film-substrate cohesion, and present invention employs unique depositing operation
（Size is biased by loop control and deposits CrN layers）, wherein,
Step 1：Before aura cleaning, hot donut cavity wall to being incubated 1.5-2.5h after 290-310 DEG C, the step can play for
The purpose of vacuum chamber degasification, so as to obtain more preferable back end vacuum.
Step 5：Because the quality and piston ring substrate temperature of coating are closely related, when the temperature is low, piston ring is reached
The atom active of matrix is low, and nucleation density is low, so that the interface of coating and piston ring substrate easily produces gap；Work as temperature
When spending high, the coarse grains of coating, internal stress increase can be promoted again；Only at a suitable temperature, piston ring substrate just has
There is higher surface-active, larger Enhancing Nucleation Density, less interface hole, coating has good compactness and intensity.
Therefore, this step biases size to adjust piston ring substrate temperature by loop control, it is floated in suitable scope, because
And the coated grains prepared are tiny, dense structure, good microstructure improves the abrasion resistance properties of coating.
Embodiment 1：
Referring to Fig. 1, a kind of PVD piston rings, including piston ring substrate 1 and its composite coating of surface attachment 2, the piston
The manufacture material of ring base 1 is nitrated steel, and the thickness of composite coating 2 is 10 μm, including the nanometer set gradually from the inside to the outside is multiple
Gradient transitional lay 3, CrN layers 4 are closed, wherein, the nano combined gradient transitional lay 3 includes the Cr bottoming set gradually from the inside to the outside
Layer 31, Cr transition zones 32, CrN transition zones 33.
The preparation method of above-mentioned PVD piston rings comprises the following steps successively：
1st, piston ring substrate 1 is first subjected to degreasing and rust removal, then with acetone, alcohol, deionized water ultrasound is carried out to it successively
Dry, then dried piston ring substrate 1 is placed in vacuum chamber, in heating, vacuum under 0.007Pa vacuum after cleaning
Chamber wall is then passed through 360sccm argon gas to 2h is incubated after 300 DEG C, and cleans 30min in aura under 800V back bias voltage, with
After ignite metal Cr targets, deposition 1min is to prepare Cr prime coats 31 under 100A targets ource electric current, 750V biass；
2nd, first bias is down to after 140V and deposits 5min to obtain Cr transition zones 32, turn off metal Cr targets；
3rd, first stop being passed through argon gas, 180sccm nitrogen, then the metal Cr targets that ignite then are passed through into vacuum chamber, will be biased
135V is down to after depositing 20min under 120A target ource electric currents, wherein, the vacuum of the vacuum chamber is 1.9Pa；
4th, 15min is deposited under 100V biass；
5th, 15min is deposited under 100V biass；
6th, 15min is deposited under 200V biass；
7th, circulating repetition operation 4-6, until sedimentation time reaches 2h, now, PVD piston rings are prepared and finished.
Embodiment 2：
Structure, step be the same as Example 1, difference is：
In the step 1, hot donut cavity wall is then passed through to 2.5h is incubated after 290 DEG C under 0.008Pa vacuum
350sccm argon gas, and under 700V back bias voltage aura clean 35min, then ignite metal Cr targets, 110A targets ource electric current,
450V biass are lower to be deposited 3min to prepare Cr prime coats 31；
In the step 2, the time of deposition Cr transition zones 32 is 6min；
In the step 3, the vacuum of vacuum chamber is 2.3Pa, and the flow for being passed through nitrogen is 200sccm, is biased as 140V,
Target ource electric current is 130A, and sedimentation time is 15min.
Embodiment 3：
Referring to Fig. 2, a kind of PVD piston rings, its structure such as embodiment 1, difference is：
The thickness of the composite coating 2 is 20 μm, and nano combined gradient transitional lay 3 also includes CrC transition zones 34, the CrC
Transition zone 34 is located between Cr transition zones 32, CrN transition zones 33.
The preparation method of above-mentioned PVD piston rings, its step such as embodiment 1, difference is：
In the step 1, the electric current in metal Cr targets source is 110A, and the bias of deposition Cr prime coats 31 is 500V, and the time is
2min；
The preparation method also includes the preparation process of CrC transition zones, and the step is located between step 2, step 3；
The preparation process of the CrC transition zones refers to：First ignite metal Cr targets and C targets deposition CrC transition zones 34 simultaneously, then
Close metal Cr targets and C targets；
In the step 3, the vacuum of vacuum chamber is 2.0Pa, and the flow for being passed through nitrogen is 200sccm, is biased as 130V,
Target ource electric current is 130A；
Step 4：20min is deposited under 150V biass；
Step 5：20min is deposited under 80V biass；
Step 6：20min is deposited under 180V biass；
Step 7：Circulating repetition operates 4-6, until sedimentation time reaches 4h.
Embodiment 4：
Structure, step be the same as Example 3, difference is：
Step 4：15min is deposited under 120V biass；
Step 5：15min is deposited under 100V biass；
Step 6：15min is deposited under 150V biass.
The adhesion of the PVD piston rings prepared using above-described embodiment, composite coating 2 and piston ring substrate 1 is critical load
Lotus Lc>=100N, such as Fig. 3, there is clearly interface between coating and piston ring substrate, coating uniform is fine and close, and film base junction is got togather；Subtract
Effect of rubbing is good, and 19% is reduced compared to the piston-ring friction coefficient for not doing PVD processing under dry condition, it is possible to decrease 5%
Engine friction horsepower is lost and 0.5% engine fuel is consumed, such as Fig. 4, and changing the outfit has the engine friction of inventive piston ring
Moment of torsion is remarkably decreased, and fall is up to 5%.
Claims (7)
1. a kind of preparation method of PVD piston rings, it is characterised in that：
The PVD piston rings include piston ring substrate（1）And its composite coating of surface attachment（2）, the composite coating（2）Bag
Include the nano combined gradient transitional lay set gradually from the inside to the outside（3）, CrN layers（4）, wherein, the nano combined gradient transition
Layer（3）Including the Cr prime coats set gradually from the inside to the outside（31）, Cr transition zones（32）, CrN transition zones（33）；
The preparation method comprises the following steps successively：
1st, first by the piston ring substrate by tentatively cleaning（1）It is placed in vacuum chamber, is passed through argon gas and carries out aura cleaning, Ran Houyin
Metal Cr targets are fired, Cr prime coats are deposited under 450-750V biass（31）；
2nd, bias is first down to deposition Cr transition zones after 140-160V（32）, turn off metal Cr targets；
3rd, first stop being passed through argon gas, nitrogen, then the metal Cr targets that ignite then are passed through into vacuum chamber, bias is down to 130-140V
After deposit 15-20min；
4th, continue to deposit to predetermined sedimentation time under 80-200V biass, now, PVD piston rings are prepared and finished.
2. a kind of preparation method of PVD piston rings according to claim 1, it is characterised in that：
The step 4 includes following operation successively：
A, 100-150V bias under deposit 15-20min；
B, 80-100V bias under deposit 15-20min；
C, 150-200V bias under deposit 15-20min；
D, circulating repetition operation a-c, until reaching predetermined sedimentation time.
3. a kind of preparation method of PVD piston rings according to claim 1 or 2, it is characterised in that：
The nano combined gradient transitional lay（3）Also include CrC transition zones（34）, the CrC transition zones（34）Positioned at Cr transition zones
（32）, CrN transition zones（33）Between；
The preparation method also includes the preparation process of CrC transition zones, and the step is located between step 2, step 3；
The preparation of the CrC transition zones refers to：First ignite metal Cr targets and C targets deposition CrC transition zones simultaneously（34）, turn off gold
Belong to Cr targets and C targets.
4. a kind of preparation method of PVD piston rings according to claim 3, it is characterised in that：
In the step 1, the electric current in metal Cr targets source is 100-110A, deposits Cr prime coats（31）Time be 1-3min；
In the step 2, Cr transition zones are deposited（32）, deposition CrC transition zones（34）Time be 5-6min；
In the step 3, the vacuum of vacuum chamber is 1.9-2.3Pa, and the flow for being passed through nitrogen is 180-200sccm, metal Cr
The electric current in target source is 120-130A.
5. a kind of preparation method of PVD piston rings according to claim 1 or 2, it is characterised in that：
In step 1,
The preliminary cleaning refers to：First by piston ring substrate（1）Degreasing and rust removal is carried out, then uses acetone, alcohol, deionized water successively
Dried after being cleaned by ultrasonic to it；
The aura cleaning refers to：First by the piston ring substrate through tentatively cleaning（1）It is placed in vacuum chamber, then at 0.007-
Hot donut cavity wall then passes to 350-400sccm to 1.5-2.5h is incubated after 290-310 DEG C under 0.008Pa vacuum
Argon gas, and clean 25-35min in aura under 700-800V back bias voltage.
6. a kind of preparation method of PVD piston rings according to claim 1 or 2, it is characterised in that：The composite coating
（2）Thickness be 10-20 μm.
7. a kind of preparation method of PVD piston rings according to claim 1 or 2, it is characterised in that：The piston ring substrate
（1）Manufacture material be nitrated steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223166.4A CN104847524B (en) | 2015-05-05 | 2015-05-05 | Preparation method of PVD (physical vapor deposition) piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223166.4A CN104847524B (en) | 2015-05-05 | 2015-05-05 | Preparation method of PVD (physical vapor deposition) piston ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104847524A CN104847524A (en) | 2015-08-19 |
| CN104847524B true CN104847524B (en) | 2017-07-28 |
Family
ID=53847429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510223166.4A Active CN104847524B (en) | 2015-05-05 | 2015-05-05 | Preparation method of PVD (physical vapor deposition) piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104847524B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108070858B (en) * | 2016-11-14 | 2019-11-22 | 中国科学院宁波材料技术与工程研究所 | Nanometer multilayer piston ring coating and the preparation method and application thereof |
| CN109372651B (en) * | 2018-09-25 | 2021-06-08 | 安庆帝伯格茨活塞环有限公司 | Diamond-like coating piston ring and preparation method thereof |
| CN113215541A (en) * | 2021-05-06 | 2021-08-06 | 北京市辐射中心 | High-strength-toughness super-thick gradient nano coating and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1380667A1 (en) * | 2002-07-10 | 2004-01-14 | Nissin Electric Co., Ltd. | Carbon film-coated article and method of producing the same |
| CN101430004A (en) * | 2008-12-12 | 2009-05-13 | 武汉大学 | PVD chromium based ceramic composite coating piston ring and method for producing the same |
| CN201943835U (en) * | 2011-01-28 | 2011-08-24 | 浙江汇锦梯尔镀层科技有限公司 | Piston ring with physical vapor deposition (PVD) cladding layer |
| DE102012020756A1 (en) * | 2012-10-23 | 2014-04-24 | Mahle International Gmbh | Component with a coating and process for its preparation |
| CN204591516U (en) * | 2015-05-05 | 2015-08-26 | 东风商用车有限公司 | PVD piston ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004032403B3 (en) * | 2004-07-03 | 2005-12-22 | Federal-Mogul Burscheid Gmbh | Method for producing a coating on a piston ring and piston ring |
-
2015
- 2015-05-05 CN CN201510223166.4A patent/CN104847524B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1380667A1 (en) * | 2002-07-10 | 2004-01-14 | Nissin Electric Co., Ltd. | Carbon film-coated article and method of producing the same |
| CN101430004A (en) * | 2008-12-12 | 2009-05-13 | 武汉大学 | PVD chromium based ceramic composite coating piston ring and method for producing the same |
| CN201943835U (en) * | 2011-01-28 | 2011-08-24 | 浙江汇锦梯尔镀层科技有限公司 | Piston ring with physical vapor deposition (PVD) cladding layer |
| DE102012020756A1 (en) * | 2012-10-23 | 2014-04-24 | Mahle International Gmbh | Component with a coating and process for its preparation |
| CN204591516U (en) * | 2015-05-05 | 2015-08-26 | 东风商用车有限公司 | PVD piston ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104847524A (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103789725B (en) | Multilamellar multiple elements design hard PVD coating, piston ring and the preparation technology of a kind of piston ring surface | |
| KR101488302B1 (en) | Coating material for aluminum die casting and the method for manufacturing the same | |
| JP6297049B2 (en) | Component having coating and method for manufacturing the same | |
| CN101430004B (en) | PVD chromium based ceramic composite coating piston ring and method for producing the same | |
| CN107130212B (en) | High-hardness wear-resistant thermal-shock-resistant thick tantalum coating and preparation method thereof | |
| CN113073293B (en) | Structure and method for improving tribological performance of E690 steel | |
| CN104847524B (en) | Preparation method of PVD (physical vapor deposition) piston ring | |
| KR20130095390A (en) | Piston ring having multilayer | |
| EP0707092B1 (en) | Slide member and method of its production | |
| CN104388899A (en) | Piston ring with MoN/Cr/CrN/Cr nano composite ultra-thick coating and preparation method of piston ring | |
| CN108411258A (en) | A kind of super thick non-hydrogen diamond membrane and preparation method thereof | |
| US20100104773A1 (en) | Method for use in a coating process | |
| CN105220120A (en) | The method of a kind of MULTILAYER COMPOSITE fullerene film industrialization in motor car engine | |
| CN103225064A (en) | Preparation method of diamond-like coating piston ring | |
| CN101294284A (en) | Ablation-resistant fatigue-resistant plasma surface recombination reinforcing method | |
| CN106050466B (en) | Piston ring for internal combustion engine | |
| CN102758201A (en) | Composite coating with anti-corrosion lubricating property of surface of magnesium alloy, preparation method thereof | |
| CN103552311A (en) | Protective coating of single crystal high-temperature alloy as well as preparation method thereof | |
| CN113529048A (en) | Ultrahigh-speed deposition method of high-bonding-force ultra-thick DLC coating on surface of piston ring | |
| CN108611590B (en) | Method for preventing Ti alloy workpiece from being seized | |
| CN113512710A (en) | 45 steel surface CrN-Cr gradient coating and preparation method and application thereof | |
| CN204591516U (en) | PVD piston ring | |
| CN203782221U (en) | Multilayer multi-element composite hard PVD (physical vapor deposition) clad layer for surface of piston ring and piston ring | |
| WO2013136510A1 (en) | Tough film and sliding member | |
| CN105862004A (en) | TiAlCrN&MoS2/Ti/Al/Cr multi-element laminated lubricating coating tool and preparation process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |