CN106521405A - Impregnation agent for surface modification of nickel base alloy and utilization method of impregnation agent - Google Patents
Impregnation agent for surface modification of nickel base alloy and utilization method of impregnation agent Download PDFInfo
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- CN106521405A CN106521405A CN201610937420.1A CN201610937420A CN106521405A CN 106521405 A CN106521405 A CN 106521405A CN 201610937420 A CN201610937420 A CN 201610937420A CN 106521405 A CN106521405 A CN 106521405A
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- penetration enhancers
- penetration enhancer
- ludox
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 30
- 239000000956 alloy Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 27
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title abstract description 16
- 229910052759 nickel Inorganic materials 0.000 title abstract description 7
- 230000004048 modification Effects 0.000 title abstract description 4
- 238000012986 modification Methods 0.000 title abstract description 4
- 239000003795 chemical substances by application Substances 0.000 title abstract 8
- 238000005470 impregnation Methods 0.000 title abstract 8
- 229910018138 Al-Y Inorganic materials 0.000 claims abstract description 49
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 40
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 40
- 239000002131 composite material Substances 0.000 claims abstract description 13
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003623 enhancer Substances 0.000 claims description 52
- 230000035515 penetration Effects 0.000 claims description 52
- 239000003961 penetration enhancing agent Substances 0.000 claims description 44
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 33
- 239000003513 alkali Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000002585 base Substances 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 230000008595 infiltration Effects 0.000 claims description 10
- 238000001764 infiltration Methods 0.000 claims description 10
- 239000000565 sealant Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000003643 water by type Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims 1
- 235000019801 trisodium phosphate Nutrition 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 14
- 239000011159 matrix material Substances 0.000 abstract description 5
- 235000019270 ammonium chloride Nutrition 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 31
- 239000011651 chromium Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 7
- 238000000498 ball milling Methods 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 210000000582 semen Anatomy 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- -1 wherein Substances 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 229910000943 NiAl Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/26—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions more than one element being diffused
Abstract
The invention relates to an impregnating layer for high temperature resistance and corrosion resistance surface modification of a nickel base alloy, and application of the impregnating layer. An impregnation agent comprises an Al-Y impregnation agent and a Cr-Y impregnation agent, wherein the Al-Y impregnation agent comprises the following components by weight percent: 10% to 15% of Al, 1% to 2% of Y2O3 and 6% to 10% of NH4Cl, and the balance being Al2O3; and the Cr-Y impregnation agent comprises the following components by weight percent: 12% to 18% of Cr, 1% to 2% of Y2O3 and 6% to 10% of NH4Cl, and the balance being Al2O3. A Cr-Al-Y composite impregnating layer can be prepared on the surface of the nickel base alloy through a two-step method by virtue of the impregnation agent, and the corrosion property of the obtained alloy is improved by 3 to 5 times compared with the corrosion property of a matrix alloy.
Description
Technical field
The present invention relates to metal surface properties modification, more particularly to a kind of nickel-base alloy surface high temperature resisting corrosion resisting is modified
Infiltration layer and its using method.
Background technology
DZ125 nickel-base alloys are one of higher directional solidification nickel-base high-temperature alloys of current China's performance level, with good
Good medium and high temperature combination property and excellent thermal fatigue property, but its heat and corrosion resistant ability is poor, especially for engine and
During gas turbine blades, as which is in high temperature big load and Cl-、SO2Work under severe rugged environment Deng corrosive medium so as to Yi Fa
The problems such as raw oxidation, abrasion and heat erosion.
To carry heavy alloyed high temperature resisting corrosion resisting, two ways is commonly used：1) Integral alloy, adds various alloy units
Element, designs new alloy system；2) alloy surface modifying technology, including surface alloying and coating technology.Integral alloy skill
Though art can improve the high temperature resisting corrosion resisting performance of nickel-base alloy, as its destruction to material betides surface mostly, therefore
While above-mentioned performance is improved, often the overall mechanical property of material is adversely affected.Such as, chromium content is high
DZ38G possesses excellent corrosion and heat resistant, but its mechanical property is substantially less than the relatively low DZ125 of chromium content.Therefore, improve nickel
Based alloy is anti-oxidant, friction resistant is worn and torn and the optimal path of hot corrosion resistance is surface modification treatment, using existing failure
, used as guidance, the composition of appropriate design surface reforming layer is modified by various surfaces for the achievement of mechanism and alloying effect research
Technology forms the surface reforming layer with superperformance in alloy surface, while also making the performance of matrix material completely be protected
Stay.
Research finds that chromium/aluminium (Cr/Al) compound coating possesses fusing point height, the spy that heat endurance is good, corrosion resistance is excellent
Point, is suitable for the high temperature resisting corrosion resisting protection of high temperature alloy：Chromium in infiltration layer can promote its surface that aluminium selective oxidation, shape occur
Into Al2O3Film, is effectively improved the antioxygenic property of aluminium infiltration layer, improves its adhesion and high temperature oxidation resistance between matrix, reduces
Form the content of critical aluminium needed for protectiveness pellumina；Meanwhile, the chromium in infiltration layer can form Diffusion Barrier, reduce infiltration layer and base
Phase counterdiffusion between body.In addition, rare earth element yttrium (Y) can improve the compactness and its adhesion with matrix of coating, reduce closing
The oxidation rate of gold, improves the anti-strip ability of oxide-film.
At present, method is oozed by the diffusion of two steps the Cr-Al-Y of high temperature resisting corrosion resisting is prepared on DZ125 nickel base superalloys surface
The technology of compisite seeping layer still belongs to blank, therefore, study the compisite seeping layer technology of preparing and realize to DZ125 nickel base superalloys
Application it is significant.
The content of the invention
It is an object of the invention to provide a kind of Cr-Al-Y compisite seeping layers and its DZ125 nickel-base alloys surface be modified should
With the high temperature resisting corrosion resisting performance of DZ125 nickel-base alloys can be effectively improved using the method.
The technical scheme adopted by solution technical problem of the invention is comprised the following steps：
A kind of modified penetration enhancer in nickel-base alloy surface, including Al-Y penetration enhancers and Cr-Y penetration enhancers, in percentage by weight,
Al-Y penetration enhancers are consisted of：10%～15% is oozed element al, and 1%～2% is oozed element Y2O3, 6%～10% catalyst
NH4Cl, balance of filler Al2O3；Cr-Y penetration enhancers are consisted of：12%～18% is oozed element Cr, and 1%～2% is oozed element
Y2O3, 6%～10% catalyst n H4Cl, balance of filler Al2O3.Wherein, Al, Cr, NH4Cl、Y2O3And Al2O3It is powder
Shape, and Al2O3≤ 200 mesh.
A kind of using method of the modified penetration enhancer in nickel-base alloy surface, comprises the steps：
(1) alkali cleaning：Sample is placed in into temperature in 65～80 DEG C of alkali wash waters, wherein, alkali wash water is 75～100g/L's
The Na of NaOH solution or 20～25g/L3PO4Solution, soaks 10～15min；
(2) wash：Sample after alkali cleaning is rinsed using circulating water, and is dried up；
(3) prepare penetration enhancer：According to a certain percentage penetration enhancer preparation mixing is placed in after grinding in ball grinder 3h, temperature is placed in
Dried for 1～2h is incubated in 120 DEG C of baking ovens, the penetration enhancer of preparation is respectively Al-Y penetration enhancers and Cr-Y penetration enhancers；
(4) penetrate into penetration enhancer：
The first step, penetrates into Al-Y penetration enhancers：
A, the Al-Y penetration enhancers after drying are loaded crucible, and in sample embedment penetration enhancer, kept between adjacent samples certain
Distance,
B, adding a cover and use Ludox and Al equipped with the crucible of sample2O3It is placed in after sealing in Muffle furnace, at 100～150 DEG C
Lower insulation 0.5h, makes Ludox and Al2O3Sealant is fully cured, wherein, Ludox and Al2O3Compound method be every 1L silicon
1～1.2kg Al are added in colloidal sol2O3And mix,
C, Muffle furnace intensification 1h to temperature reach 950 DEG C, with stove to room temperature after being incubated 40～60min at 950 DEG C,
D, pack cementation is entered the sample after penetration enhancer rinsed using circulating water, then dried, it is standby；
Second step, penetrates into Cr-Y penetration enhancers：
A, after drying Cr-Y penetration enhancers load crucible, and penetrate into Al-Y penetration enhancers after sample embedment penetration enhancer in, it is adjacent
Certain distance is kept between sample,
B, equipped with penetrate into Al-Y penetration enhancer samples crucible add a cover and use Ludox and Al2O3It is placed in after sealing in Muffle furnace,
0.5h is incubated at 100～150 DEG C, Ludox and Al is made2O3Sealant is fully cured, wherein, Ludox and Al2O3Preparation
Method is addition 1～1.2kg Al in every 1L Ludox2O3And mix,
C, Muffle furnace intensification 70min to temperature reach 1050 DEG C, with stove to room temperature after being incubated 1.5～2.5h at 1050 DEG C,
D, taking-up sample；
(5) cleaning, drying：Two-step method composite cementation is entered the sample after infiltration layer to rinse using circulating water, it is then clear with alcohol
Wash, then dried, terminate.
Two-step method is capable of achieving using technical scheme Cr-Al-Y composite cementations are prepared on DZ125 nickel-base alloys surface
Layer, and the coating for being obtained has the characteristics of adhesion is good, even tissue is fine and close, improves the high temperature resisting corrosion resisting of the alloy
Can, i.e. under identical working condition, decay resistance improves 3-5 times compared with matrix alloy, meanwhile, the preparation technology possesses simply
Stable, easy to operate, efficiency high, it is with low cost, the features such as be easily achieved.
Description of the drawings
Fig. 1 is the method flow diagram using technical solution of the present invention；
The microstructure figure on Cr-Al-Y compisite seeping layer surfaces of the Fig. 2 by being obtained using the embodiment of the present invention 1；
The microstructure figure in Cr-Al-Y compisite seeping layer sections of the Fig. 3 by being obtained using the embodiment of the present invention 1；
The microstructure figure on Cr-Al-Y compisite seeping layer surfaces of the Fig. 4 by being obtained using the embodiment of the present invention 2；
The microstructure figure in Cr-Al-Y compisite seeping layer sections of the Fig. 5 by being obtained using the embodiment of the present invention 2；
The microstructure figure on Cr-Al-Y compisite seeping layer surfaces of the Fig. 6 by being obtained using the embodiment of the present invention 3；
The microstructure figure in Cr-Al-Y compisite seeping layer sections of the Fig. 7 by being obtained using the embodiment of the present invention 3；
The phase composition figure in Cr-Al-Y compisite seeping layer sections of the Fig. 8 by being obtained using the embodiment of the present invention 1.
Specific embodiment
Embodiment 1
As shown in figure 1, adopt the method flow of technical solution of the present invention for：1. alkali cleaning：DZ125 alloy samples are placed in into temperature
Spend in 65 DEG C of alkali wash waters, to soak 15min, NaOH solution of the alkali wash water for 100g/L；2. wash：Sample after alkali cleaning is used
Circulating water is rinsed, and is dried up；3. prepare penetration enhancer：Penetration enhancer is weighed according to quantity accurately, the proportioning of Al-Y penetration enhancers is by weight percentage：12%
Al, 7%NH4Cl (analysis is pure), 1%Y2O3, balance of Al2O3；The proportioning of Cr-Y penetration enhancers is by weight percentage：15%Cr, 7%
NH4Cl (analysis is pure), 1%Y2O3, balance of Al2O3；4. ball milling：The Al-Y penetration enhancers for preparing, Cr-Y penetration enhancers are respectively placed in into ball
Grind in grinding machine so as to be sufficiently mixed, refine penetration enhancer particle；5. it is dried：Penetration enhancer after ball milling is placed in into the baking that temperature is 120 DEG C
It is incubated 1h to be dried in case；6. the 1st step of composite cementation, penetrates into Al-Y penetration enhancers, and a. loads crucible the Al-Y penetration enhancers after drying, and
In sample embedment penetration enhancer, certain distance between adjacent samples, is kept；B. equipped with sample crucible add a cover and use Ludox and
Al2O3Be placed in after sealing in Muffle furnace, and 0.5h be incubated at 100 DEG C, make Ludox and Al2O3Sealant is fully cured, wherein
Ludox and Al2O3Compound method be that every 1L Ludox adds 1kgAl2O3And mix；C. Muffle furnace intensification 1h is reached to temperature
950 DEG C, with stove to room temperature after being incubated 50min at 950 DEG C；D. the sample that embedding is penetrated into after Al-Y penetration enhancers is rushed using circulating water
Wash, then dried, it is standby；7. the 2nd step of composite cementation, penetrates into Cr-Y penetration enhancers, and a. loads crucible the Cr-Y penetration enhancers after drying, and
In the sample embedment penetration enhancer penetrated into after Al-Y penetration enhancers, certain distance between adjacent samples, is kept；B. equipped with penetrating into Al-Y
Ludox and Al are added a cover and used to the crucible of penetration enhancer sample2O3Be placed in after sealing in Muffle furnace, and 0.5h be incubated at 100 DEG C, make silicon
Colloidal sol and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Compound method be that every 1L Ludox adds 1kgAl2O3And
Mixing；C. Muffle furnace intensification 70min reaches 1050 DEG C to temperature, with stove to room temperature after being incubated 2h at 1050 DEG C；D. take out sample；
8. cleaning, drying：Two-step method composite cementation is entered the sample after infiltration layer to rinse using circulating water, then with alcohol washes, then is dried
It is dry, terminate.
Embodiment 2
As shown in figure 1, adopt the method flow of technical solution of the present invention for：1. alkali cleaning：DZ125 alloy samples are placed in into temperature
Spend in 70 DEG C of alkali wash waters, to soak 13min, Na of the alkali wash water for 20g/L3PO4Solution；2. wash：Sample after alkali cleaning is used
Circulating water is rinsed, and is dried up；3. prepare penetration enhancer：Penetration enhancer is weighed according to quantity accurately, the proportioning of Al-Y penetration enhancers is by weight percentage：10%
Al, 6%NH4Cl (analysis is pure), 1.5%Y2O3, balance of Al2O3；The proportioning of Cr-Y penetration enhancers is by weight percentage：10%Cr,
6%NH4Cl (analysis is pure), 1.5%Y2O3, balance of Al2O3；4. ball milling：The Al-Y penetration enhancers for preparing, Cr-Y penetration enhancers are put respectively
In grinding in ball grinder so as to be sufficiently mixed, penetration enhancer particle is refined；5. it is dried：Penetration enhancer after ball milling is placed in into temperature for 120 DEG C
Baking oven in be incubated 1.5h dried；6. the 1st step of composite cementation, penetrates into Al-Y penetration enhancers, and a. loads the Al-Y penetration enhancers after drying
Crucible, and in sample embedment penetration enhancer, between adjacent samples, keep certain distance；B. the crucible equipped with sample is added a cover and uses silicon
Colloidal sol and Al2O3Be placed in after sealing in Muffle furnace, and 0.5h be incubated at 120 DEG C, make Ludox and Al2O3Sealant is completely solid
Change, wherein Ludox and Al2O3Compound method be that every 1L Ludox adds 1.2kgAl2O3And mix；C. Muffle furnace intensification 1h
950 DEG C are reached to temperature, with stove to room temperature after being incubated 60min at 950 DEG C；D. the sample for embedding being penetrated into after Al-Y penetration enhancers is used
Circulating water is rinsed, then is dried, standby；7. the 2nd step of composite cementation, penetrates into Cr-Y penetration enhancers, and a. fills the Cr-Y penetration enhancers after drying
Enter crucible, and in the sample embedment penetration enhancer penetrated into after Al-Y penetration enhancers, between adjacent samples, keep certain distance；B. equipped with
Ludox and Al are added a cover and used to the crucible for penetrating into Al-Y penetration enhancer samples2O3It is placed in after sealing in Muffle furnace, and is incubated at 120 DEG C
0.5h, makes Ludox and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Compound method be that every 1L Ludox is added
1.2kgAl2O3And mix；C. Muffle furnace intensification 70min reaches 1050 DEG C to temperature, with stove to room after being incubated 1.5h at 1050 DEG C
Temperature；D. take out sample；8. cleaning, drying：Two-step method composite cementation is entered the sample after infiltration layer to rinse using circulating water, wine is then used
Seminal plasma is washed, then is dried, and is terminated.
Embodiment 3
As shown in figure 1, adopt the method flow of technical solution of the present invention for：1. alkali cleaning：DZ125 alloy samples are placed in into temperature
Spend in 80 DEG C of alkali wash waters, to soak 10min, NaOH solution of the alkali wash water for 75g/L；2. wash：Sample after alkali cleaning is used
Circulating water is rinsed, and is dried up；3. prepare penetration enhancer：Penetration enhancer is weighed according to quantity accurately, the proportioning of Al-Y penetration enhancers is by weight percentage：15%
Al, 10%NH4Cl (analysis is pure), 2%Y2O3, balance of Al2O3；The proportioning of Cr-Y penetration enhancers is by weight percentage：18%Cr,
10%NH4Cl (analysis is pure), 2%Y2O3, balance of Al2O3；4. ball milling：The Al-Y penetration enhancers for preparing, Cr-Y penetration enhancers are put respectively
In grinding in ball grinder so as to be sufficiently mixed, penetration enhancer particle is refined；5. it is dried：Penetration enhancer after ball milling is placed in into temperature for 120 DEG C
Baking oven in be incubated 2h dried；6. the 1st step of composite cementation, penetrates into Al-Y penetration enhancers, and a. loads earthenware the Al-Y penetration enhancers after drying
Crucible, and in sample embedment penetration enhancer, between adjacent samples, keep certain distance；B. the crucible equipped with sample is added a cover and uses silicon molten
Glue and Al2O3Be placed in after sealing in Muffle furnace, and 0.5h be incubated at 150 DEG C, make Ludox and Al2O3Sealant is fully cured,
Wherein Ludox and Al2O3Compound method be that every 1L Ludox adds 1.5kgAl2O3And mix；C. Muffle furnace intensification 1h is to temperature
Degree reaches 950 DEG C, with stove to room temperature after being incubated 40min at 950 DEG C；D. the sample for embedding being penetrated into after Al-Y penetration enhancers is using flowing
Water is rinsed, then is dried, standby；7. the 2nd step of composite cementation, penetrates into Cr-Y penetration enhancers, and a. loads earthenware the Cr-Y penetration enhancers after drying
Crucible, and in the sample embedment penetration enhancer penetrated into after Al-Y penetration enhancers, between adjacent samples, keep certain distance；B. equipped with penetrating into
Ludox and Al are added a cover and used to the crucible of Al-Y penetration enhancer samples2O3Be placed in after sealing in Muffle furnace, and 0.5h is incubated at 150 DEG C,
Make Ludox and Al2O3Sealant is fully cured, wherein Ludox and Al2O3Compound method be that every 1L Ludox is added
1.5kgAl2O3And mix；C. Muffle furnace intensification 70min reaches 1050 DEG C to temperature, with stove to room after being incubated 2.5h at 1050 DEG C
Temperature；D. take out sample；8. cleaning, drying：Two-step method composite cementation is entered the sample after infiltration layer to rinse using circulating water, wine is then used
Seminal plasma is washed, then is dried, and is terminated.
Fig. 2 to Fig. 6 by obtaining the microstructure in Cr-Al-Y compisite seeping layers surface and section using the embodiment of the present invention 1 to 3
Figure, as shown in fig. 7, from the phase composition figure in compisite seeping layer section, from the composition of outermost layer to innermost layer be followed successively by NiCr layers,
NiCr/Ni2Cr3Layer, NiAl layer, Ni3The layer excessively of Al layers and rich nickel, therefore, Cr, Al, Y element realize compound permeation, and whole
Individual quality layer is good.
Claims (3)
1. the penetration enhancer that a kind of nickel-base alloy surface is modified, it is characterised in that the penetration enhancer includes Al-Y penetration enhancers and Cr-Y penetration enhancers, presses
According to percentage by weight meter, Al-Y penetration enhancers are consisted of：10%～15% is oozed element al, and 1%～2% is oozed element Y2O3, 6%
～10% catalyst n H4Cl, balance of filler Al2O3；Cr-Y penetration enhancers are consisted of：12%～18% is oozed element Cr, and 1%
～2% is oozed element Y2O3, 6%～10% catalyst n H4Cl, balance of filler Al2O3。
2. the penetration enhancer that a kind of nickel-base alloy surface as claimed in claim 1 is modified, it is characterised in that described Al, Cr, NH4Cl、
Y2O3And Al2O3It is powder, and the Al2O3≤ 200 mesh.
3. a kind of using method of penetration enhancer as claimed in claim 1, it is characterised in that comprise the steps：
(1) alkali cleaning：Sample is placed in into temperature, in 65～80 DEG C of alkali wash waters, to soak 10～15min, wherein, the alkali wash water is
The Na3PO4 solution of the NaOH solution or 20～25g/L of 75～100g/L；
(2) wash：Sample after alkali cleaning is rinsed using circulating water, and is dried up；
(3) prepare penetration enhancer：Penetration enhancer preparation mixing is placed in after grinding in ball grinder 3h according to ratio described in claim 1, is put
1～2h is incubated in the baking oven that temperature is 120 DEG C to be dried, the penetration enhancer of preparation is respectively Al-Y penetration enhancers and Cr-Y penetration enhancers；
(4) penetrate into penetration enhancer：
The first step, penetrates into Al-Y penetration enhancers：
A, after drying Al-Y penetration enhancers load crucible, and sample embedment penetration enhancer in, certain distance is kept between adjacent samples,
B, adding a cover and use Ludox and Al equipped with the crucible of sample2O3It is placed in after sealing in Muffle furnace, protects at 100～150 DEG C
Warm 0.5h, makes Ludox and Al2O3Sealant is fully cured, wherein, the Ludox and Al2O3Compound method be every 1L silicon
1～1.2kg Al are added in colloidal sol2O3And mix,
C, Muffle furnace intensification 1h to temperature reach 950 DEG C, with stove to room temperature after being incubated 40～60min at 950 DEG C,
D, pack cementation is entered the sample after penetration enhancer rinsed using circulating water, then dried, it is standby；
Second step, penetrates into Cr-Y penetration enhancers：
A, after drying Cr-Y penetration enhancers load crucible, and penetrate into Al-Y penetration enhancers after sample embedment penetration enhancer in, adjacent samples
Between keep certain distance,
B, equipped with penetrate into Al-Y penetration enhancer samples crucible add a cover and use Ludox and Al2O3It is placed in after sealing in Muffle furnace,
0.5h is incubated at 100～150 DEG C, Ludox and Al is made2O3Sealant is fully cured, wherein, the Ludox and Al2O3Match somebody with somebody
Method processed is addition 1～1.2kg Al in every 1L Ludox2O3And mix,
C, Muffle furnace intensification 70min to temperature reach 1050 DEG C, with stove to room temperature after being incubated 1.5～2.5h at 1050 DEG C,
D, taking-up sample；
(5) cleaning, drying：Two-step method composite cementation is entered the sample after infiltration layer to rinse using circulating water, then with alcohol washes, then
Dried, terminated.
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