CN109702199A - A kind of high-entropy alloy-base self-lubricating oily bearing material - Google Patents
A kind of high-entropy alloy-base self-lubricating oily bearing material Download PDFInfo
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Abstract
The present invention relates to a kind of high-entropy alloy-base self-lubricating oily bearing materials; the product that the material is 5 ~ 45% prior to sintering voids content under protective atmosphere by the high-entropy alloy powder for constituting skeleton and the solid lubricant powder being uniformly filled in skeleton, is then completely immersed in lubricating oil under vacuum or heated condition to obtain the final product.Self-lubricating oily bearing material of the present invention overcomes and is difficult to the contradiction balanced between conventional oiliness bearing mechanical property and tribological property, have many advantages, such as that coefficient of friction is low, wearability is good, carrying is high, noise is small, the service life is long, high reliablity and processing performance are good, there is good self-lubricating property and mechanical property under the harsh operating condition such as high speed, heavy duty and thump, and will not occur broken and be broken, it may be produced that oiliness bearing for fields such as engineering machinery, aerospace, weaponry, automobile, lathe, motor, computer and household electrical appliance.
Description
Technical field
The present invention relates to oiliness bearing field more particularly to a kind of high-entropy alloy-base self-lubricating oily bearing materials.
Background technique
Oiliness bearing can be impregnated with a large amount of lubricating oil using the porous structure of itself, lubricate when generating relative motion with axis
Oil is generated the effect of lubrication and support shaft, can be provided under oil-free or Starved Lubrication operating condition good by oozing out in porous structure
It well reliably lubricates, just can be used for a long time without fuel feeding, thus be widely used in engineering machinery, aerospace, force
The fields such as device equipment, textile machine, food machinery, pharmaceutical machine, computer and household electrical appliance.According to the difference of basis material,
The oiliness bearing being widely used at present can be divided into polymer matrix, aluminium base, copper-based and iron-based etc. three categories.Wherein, matrix mainly rises
Support load and wear-resistant effect, the lubricating oil being impregnated in porous structure mainly play lubricating action.Further to improve oil-containing axis
The anti-wear and wear-resistant performance and service life held can also add a certain amount of solid lubricant in the oiliness bearing of part, such as graphite, two
Molybdenum sulfide, polytetrafluoroethylene (PTFE) and zinc sulphide etc..The addition of solid lubricant can provide reliably in the case where oil-free lubrication
Friction-reducing and antiwear action makes oiliness bearing have better tribological property and longer service life.
In order to obtain good anti-wear and wear-resistant performance, usually require to keep a large amount of porous structure and addition in oiliness bearing
A large amount of solid lubricant has its mechanical property however, porous structure therein and the solid lubricant of addition are difficult to avoid that
There is destruction, so that it is easy to happen fracture under high speed, heavy duty and the harsh operating condition such as thump, be crushed and the calamities such as severely deformed
The consequence of difficulty.Therefore, there is the contradiction confronted with each other between the mechanical property and tribological property of oiliness bearing, how to obtain
The high-performance oiliness bearing for having both excellent mechanical performances and tribological property is one of the technical bottleneck in the field.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to have both excellent mechanical performances, greasy property and abrasion resistance
High-entropy alloy-base self-lubricating oily bearing material.
To solve the above problems, a kind of high-entropy alloy-base self-lubricating oily bearing material of the present invention, feature exist
In: the material is by the high-entropy alloy powder for constituting skeleton and the solid lubricant powder being uniformly filled in skeleton prior to protecting gas
It sinters the product that voids content is 5 ~ 45% under atmosphere into, is then completely immersed in lubricating oil under vacuum or heated condition to obtain the final product；Institute
The volumn concentration for stating solid lubricant powder is 0 ~ 45%.
The partial size of the high-entropy alloy powder is 5 ~ 150 μm, ingredient CoCrFeNiMox, wherein x=0.05 ~
0.5, Co, the atomic percent of tetra- kinds of elements of Cr, Fe and Ni is to connect near atomic ratio, i.e. Co:Cr:Fe:Ni=0.7 ~ 1.3:0.7
~1.3:0.7~1.3: 0.7~1.3。
The solid lubricant powder refers to one or more of graphite, molybdenum disulfide, polytetrafluoroethylene (PTFE) and zinc sulphide,
Its partial size is 2 ~ 120 μm.
The protective atmosphere refers to vacuum, hydrogen, argon gas, any one in nitrogen.
The sintering method refers to hot-pressing sintering method or pressureless sintering method.
The condition of the hot pressed sintering refers to that sintering pressure is 0.2 ~ 10 MPa, and sintering temperature is 900 ~ 1300 DEG C, sintering
Soaking time is 5 ~ 240 min, and heating rate is 30 ~ 300 DEG C/min.
The pressureless sintering method refers to applies mold pre-molding first, then the sinter molding in non-pressure sintering furnace,
Sintering temperature is 900 ~ 1300 DEG C, and the sintered heat insulating time is 30 ~ 240 min, and heating rate is 2 ~ 15 DEG C/min.
The lubricating oil refers to polyalphaolefin PAO series of lubricant oil, conventional machine oil, engine lubricating oil, gear oil, spindle
Oil and any one in cylinder oil.
Compared with the prior art, the present invention has the following advantages:
1, the present invention uses basis material of the high-entropy alloy as stephanoporate oil-retaining bearing in a creative way, and due to high-entropy alloy matrix
The good mechanical property of material has it while keeping a large amount of holes and adding a large amount of solid lubricants good tough
Property, the contradiction balanced is difficult between conventional oiliness bearing mechanical property and tribological property to overcome.
2, self-lubricating oily bearing material of the present invention is with coefficient of friction is low, wearability is good, carrying is high, noise is small, the service life
Long, the advantages that high reliablity and processing performance are good, has good from moistening under the harsh operating condition such as high speed, heavy duty and thump
Slip energy and mechanical property, and will not occur broken and be broken, may be produced that oiliness bearing for engineering machinery, aerospace,
The fields such as weaponry, automobile, lathe, motor, computer and household electrical appliance.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 is the CoCrFeNiMo that porosity of the present invention is 15%0.2High-entropy alloy-base self-lubricating oily bearing material is micro-
The light micrograph of tissue.
Fig. 2 is the CoCrFeNiMo that porosity of the present invention is 15%0.2High-entropy alloy-base self-lubricating oily bearing material with
GCr15 bearing steel ball is at room temperature to coefficient of friction when rubbing.
Fig. 3 is the CoCrFeNiMo that porosity of the present invention is 30%0.1High-entropy alloy-base self-lubricating oily bearing material is micro-
The light micrograph of tissue.
The CoCrFeNiMo that Fig. 4 porosity of the present invention is 30%0.1High-entropy alloy-base self-lubricating oily bearing material and GCr15
Bearing steel ball is at room temperature to coefficient of friction when rubbing.
Fig. 5 is that porosity of the present invention is 15%, while being added to the solid lubricant graphite that volume fraction is 15%
CoCrFeNiMo0.05The light micrograph of high-entropy alloy-base self-lubricating oily bearing material microstructure.
Fig. 6 is that porosity of the present invention is 15%, while being added to the solid lubricant graphite that volume fraction is 15%
CoCrFeNiMo0.05High-entropy alloy-base self-lubricating oily bearing material and GCr15 bearing steel ball are at room temperature to friction when rubbing
Coefficient.
Specific embodiment
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 1, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.2With the solid lubricant powder that is uniformly filled in skeleton prior to sintering voids content under protective atmosphere
For 15% product, then lubricating oil is completely immersed under heated condition to obtain the final product.Wherein: the volume basis of solid lubricant powder
Content is 0%.
The specific method is as follows:
(1) spherical shape CoCrFeNiMo is quantitatively measured0.2High-entropy alloy powder, the powder diameter of high-entropy alloy are 5 ~ 75 μm, purity is high
In 99.5%.
(2) then the volume that high-entropy alloy is calculated according to the theoretical density of high-entropy alloy powder calculates and 15% hole is added
The volume of the porous high-entropy alloy of gap.
(3) the plasma discharging hot-pressed sintering furnace for using controllable axial displacement burns raw material powder loading graphite jig
Knot, the displacement of axial pressure head is calculated according to the volume of porous high-entropy alloy.
(4) it is sintered in vacuum environment, sets heating rate as 100 DEG C/min, sintering temperature is 1100 DEG C, sintered heat insulating
Time is 5 min, and sintering pressure is 10 MPa, furnace cooling after the completion of sintering.
(5) sample is taken out, and surface polishing as a result as shown in Figure 1, can using its microscopic structure of optical microphotograph sem observation
See that the material is porous structure, porosity 15% is consistent with design value.
(6) polyalphaolefin PAO-4 lubricating oil is immersed in a heated state, and 110 DEG C of heating temperature, the immersion oil time is 6 ~ 10 small
When, guarantee that lubricating oil is totally immersed in the porous structure of material.
Its tribological property is tested using SRV-4 frictional testing machine, with GCr15 steel ball with pair, load is 50 N, when test
Between be 30 min, sliding distance be 1.0 mm, coefficient of friction as shown in Fig. 2, average value be 0.09, wear rate be 1.2 ×
10-7Mm/N.m, it is seen that there is good tribological property.
Its mechanical property is tested using hardometer and universal testing machine, the porous oil contained self lubrication axis of the high-entropy alloy-base
The hardness of corbel material is 120 HB, 353 MPa of yield strength, 23 MPa.m of fracture toughness0.5, it is seen that it is with good tough
Property.
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 2, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.1With the solid lubricant powder that is uniformly filled in skeleton prior to sintering voids content under protective atmosphere
For 30% product, then lubricating oil is completely immersed under vacuum state to obtain the final product.Wherein: the volume basis of solid lubricant powder
Content is 0 %.
The specific method is as follows:
(1) the CoCrFeNiMo of irregular shape is quantitatively measured0.1High-entropy alloy powder, powder diameter are 70 ~ 150 μm, purity
Higher than 99.8%.
(2) the volume that high-entropy alloy is calculated according to the theoretical density of the high-entropy alloy powder, then calculates addition 30%
The volume of the porous high-entropy alloy of hole.
(3) raw material powder loading graphite jig is sintered, root by the conventional hot-press sintering furnace for using controllable axial displacement
The displacement of axial pressure head is calculated according to the volume of porous high-entropy alloy.
(4) it is sintered in vacuum environment, sets heating rate as 30 DEG C/min, sintering temperature is 1250 DEG C, when sintered heat insulating
Between be 120 min, sintering pressure be 0.2 MPa, furnace cooling after the completion of sintering.
(5) sample is taken out, and surface polishing as a result as shown in figure 3, can using its microscopic structure of optical microphotograph sem observation
See that the material is porous structure, porosity 30% is consistent with design value.
(6) SAE5W-40 routine machine oil, 10 ~ 120 Pa of vacuum degree are immersed under vacuum conditions, the immersion oil time is 2 ~ 4 hours,
Guarantee that lubricating oil is totally immersed in the porous structure of material.
Its tribological property is tested using SRV-4 frictional testing machine, load is 50 N, with GCr15 steel ball with pair, when test
Between be 30 min, sliding distance be 1.0 mm, coefficient of friction as shown in figure 4, average value be 0.08, wear rate be 2.3 ×
10-7Mm/N.m, it is seen that there is good tribological property.
Its mechanical property is tested using hardometer and universal testing machine, the porous oil contained self lubrication axis of the high-entropy alloy-base
The hardness of corbel material is 80 HB, 212 MPa of yield strength, 17 MPa.m of fracture toughness0.5, it is seen that it is with relatively good strong
Degree and toughness.
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 3, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.05It prior to sintering voids content under protective atmosphere into is 15% with the powdered graphite that is uniformly filled in skeleton
Product, then lubricating oil is completely immersed under vacuum state to obtain the final product.Wherein: the volumn concentration of powdered graphite is 15%.
The specific method is as follows:
(1) the CoCrFeNiMo of irregular shape is quantitatively measured0.05High-entropy alloy powder, powder diameter is 45 ~ 120 μm, pure
Degree is higher than 99.8%.According to the quality of high-entropy alloy, the aquadag powder that volume fraction is 15% is measured, powdered graphite partial size is
2~120 μm。
(2) the volume that high-entropy alloy is calculated according to the theoretical density of the high-entropy alloy powder, then calculates addition 15%
The volume of the porous high-entropy alloy of hole and 15% graphite.
(3) high-entropy alloy powder and aquadag powder are uniformly mixed, the pre-molding in high speed steel mould, when precompressed
According to the fixing fabric structure compacting amount of its calculated porous high-entropy alloy, it is made to keep 15% or more hole.
(4) non-pressure sintering furnace is used, pressureless sintering is carried out in hydrogen atmosphere environment, sets heating rate as 10 DEG C/min,
Sintering temperature is 1300 DEG C, and the sintered heat insulating time is 30 min, and furnace cooling after the completion of sintering then takes out sample.
(5) sample surfaces sanding and polishing, using its microscopic structure of optical microphotograph sem observation, as a result as shown in Figure 5, it is seen that should
Material is porous structure, and the sum of hole and the volume fraction of graphite are 30%.
(6) immersion SAE5W-30 conventional engine lubricating oil, 10 ~ 120 Pa of vacuum degree, immersion oil time are under vacuum conditions
4 ~ 6 hours, guarantee that lubricating oil is totally immersed in the porous structure of material.
Its tribological property is tested using SRV-4 frictional testing machine, the GCr15 steel ball with 10 mm of Φ is with pair, load 50
N, the testing time be 30 min, sliding distance be 1.0 mm, coefficient of friction as shown in fig. 6, average value be 0.05, wear rate
It is 1.7 × 10-7 mm/N.m。
Its mechanical property is tested using hardometer and universal testing machine, the porous oil contained self lubrication axis of the high-entropy alloy-base
The hardness of corbel material is 160 HB, 315 MPa of yield strength, 28 MPa.m of fracture toughness0.5, it is seen that it is with relatively good
Intensity and toughness.
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 4, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.5It is prior to sintering voids content under protective atmosphere into the molybdenum disulfide powder being uniformly filled in skeleton
Then 5% product is completely immersed in lubricating oil under heated condition to obtain the final product.Wherein: the volumn concentration of molybdenum disulfide powder is
45%。
The specific method is as follows:
(1) spherical shape CoCrFeNiMo is quantitatively measured0.5High-entropy alloy powder, the powder diameter of high-entropy alloy are 5 ~ 75 μm, purity is high
In 99.5%.According to the quality of high-entropy alloy, the molybdenum disulfide powder that volume fraction is 45% is measured, molybdenum disulfide powder partial size is
2~120 μm。
(2) then the volume that high-entropy alloy is calculated according to the theoretical density of high-entropy alloy powder calculates and 5% hole is added
With the volume of the porous high-entropy alloy of 45% molybdenum disulfide.
(3) the plasma discharging hot-pressed sintering furnace for using controllable axial displacement, by high-entropy alloy powder and molybdenum disulfide powder
It is uniformly mixed loading graphite jig to be sintered, the displacement of axial pressure head is calculated according to the volume of porous high-entropy alloy.
(4) it is sintered in vacuum environment, sets heating rate as 100 DEG C/min, sintering temperature is 1100 DEG C, sintered heat insulating
Time is 20 min, and sintering pressure is 10 MPa, furnace cooling after the completion of sintering.
(5) sample, surface polishing are taken out.
(6) gear oil is immersed in a heated state, and 110 DEG C of heating temperature, the immersion oil time is 6 ~ 10 hours, guarantees lubricating oil
It is totally immersed in the porous structure of material.
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 5, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.3It prior to sintering voids content under protective atmosphere into is 45% with the zinc sulfide powder that is uniformly filled in skeleton
Product, then lubricating oil is completely immersed under vacuum state to obtain the final product.Wherein: the volumn concentration of zinc sulfide powder is 2%.
The specific method is as follows:
(1) the CoCrFeNiMo of irregular shape is quantitatively measured0.3High-entropy alloy powder, powder diameter are 70 ~ 150 μm, purity
Higher than 99.8%.According to the quality of high-entropy alloy, the zinc sulfide powder that volume fraction is 2% is measured, zinc sulfide powder partial size is 2 ~
120 μm。
(2) the volume that high-entropy alloy is calculated according to the theoretical density of the high-entropy alloy powder, then calculates addition 45%
The volume of the porous high-entropy alloy of hole and 2% zinc sulphide.
(3) the conventional hot-press sintering furnace for using controllable axial displacement, high-entropy alloy powder and zinc sulfide powder are uniformly mixed
It is packed into graphite jig to be sintered, the displacement of axial pressure head is calculated according to the volume of porous high-entropy alloy.
(4) it is sintered in nitrogen environment, sets heating rate as 150 DEG C/min, sintering temperature is 1300 DEG C, sintered heat insulating
Time is 240 min, and sintering pressure is 5 MPa, furnace cooling after the completion of sintering.
(5) sample, surface polishing are taken out.
(6) bobbin oil, 10 ~ 120 Pa of vacuum degree are immersed under vacuum conditions, and the immersion oil time is 2 ~ 4 hours, guarantees lubricating oil
It is totally immersed in the porous structure of material.
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 6, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.4With the polytetrafluorethylepowder powder that is uniformly filled in skeleton prior to sintering voids content under protective atmosphere
For 10% product, then lubricating oil is completely immersed under vacuum state to obtain the final product.Wherein: the volume basis of polytetrafluorethylepowder powder
Content is 10%.
The specific method is as follows:
(1) spherical shape CoCrFeNiMo is quantitatively measured0.4High-entropy alloy powder, the powder diameter of high-entropy alloy are 5 ~ 75 μm, purity is high
In 99.5%.According to the quality of high-entropy alloy, the polytetrafluorethylepowder powder that volume fraction is 10%, polytetrafluorethylepowder powder grain are measured
Diameter is 2 ~ 120 μm.
(2) then the volume that high-entropy alloy is calculated according to the theoretical density of high-entropy alloy powder calculates and 10% hole is added
The volume of the porous high-entropy alloy of gap and 10% polytetrafluoroethylene (PTFE).
(3) the plasma discharging hot-pressed sintering furnace for using controllable axial displacement, by high-entropy alloy powder and polytetrafluoroethylene powder
End is uniformly mixed loading graphite jig and is sintered, and the displacement of axial pressure head is calculated according to the volume of porous high-entropy alloy.
(4) it is sintered in an argon atmosphere, sets heating rate as 300 DEG C/min, sintering temperature is 900 DEG C, when sintered heat insulating
Between be 5 min, sintering pressure be 10 MPa, furnace cooling after the completion of sintering.
(5) sample, surface polishing are taken out.
(6) cylinder oil, 10 ~ 120 Pa of vacuum degree are immersed under vacuum conditions, and the immersion oil time is 2 ~ 4 hours, guarantees lubricating oil
It is totally immersed in the porous structure of material.
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 7, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.1With the powdered graphite being uniformly filled in skeleton, molybdenum disulfide powder is prior to being sintered pore-forming under protective atmosphere
The product that gap content is 20%, is then completely immersed in lubricating oil under vacuum state to obtain the final product.Wherein: powdered graphite and molybdenum disulfide
The volumn concentration of powder is 10%.
The specific method is as follows:
(1) the CoCrFeNiMo of irregular shape is quantitatively measured0.1High-entropy alloy powder, powder diameter are 45 ~ 120 μm, purity
Higher than 99.8%.According to the quality of high-entropy alloy, the aquadag powder and volume fraction that measurement volume fraction is 10% are 10%
The partial size of molybdenum disulfide powder, powdered graphite and molybdenum disulfide powder is 2 ~ 120 μm.
(2) the volume that high-entropy alloy is calculated according to the theoretical density of the high-entropy alloy powder, then calculates addition 20%
Hole and 10% graphite, 10% molybdenum disulfide porous high-entropy alloy volume.
(3) high-entropy alloy powder and aquadag powder and molybdenum disulfide powder are uniformly mixed, it is pre- in high speed steel mould
It is molded, according to the fixing fabric structure compacting amount of its calculated porous high-entropy alloy when precompressed, it is made to keep 20% or more hole
Gap.
(4) non-pressure sintering furnace is used, pressureless sintering is carried out in argon atmosphere environment, sets heating rate as 15 DEG C/min,
Sintering temperature is 900 DEG C, and the sintered heat insulating time is 240 min, and furnace cooling after the completion of sintering then takes out sample.
(5) sample surfaces sanding and polishing.
(6) conventional machine oil, 10 ~ 120 Pa of vacuum degree are immersed under vacuum conditions, and the immersion oil time is 4 ~ 6 hours, guarantees lubrication
Oil is totally immersed in the porous structure of material.
A kind of high-entropy alloy-base self-lubricating oily bearing material of embodiment 8, the material is by constituting the high-entropy alloy powder of skeleton
Last CoCrFeNiMo0.1With the zinc sulfide powder being uniformly filled in skeleton, molybdenum disulfide powder is under protective atmosphere prior to sintering into
The product that voids content is 20%, is then completely immersed in lubricating oil under vacuum state to obtain the final product.Wherein: zinc sulfide powder and two sulphur
The volumn concentration for changing molybdenum powder is 15%.
The specific method is as follows:
(1) the CoCrFeNiMo of irregular shape is quantitatively measured0.1High-entropy alloy powder, powder diameter are 45 ~ 120 μm, purity
Higher than 99.8%.According to the quality of high-entropy alloy, zinc sulfide powder and volume fraction that measurement volume fraction is 15% are the two of 15%
The partial size of vulcanization molybdenum powder, zinc sulfide powder and molybdenum disulfide powder is 2 ~ 120 μm.
(2) the volume that high-entropy alloy is calculated according to the theoretical density of the high-entropy alloy powder, then calculates addition 20%
Hole and 15% zinc sulphide, 15% molybdenum disulfide porous high-entropy alloy volume.
(3) high-entropy alloy powder and zinc sulphide and molybdenum disulfide powder are uniformly mixed, are pressed into advance in high speed steel mould
Type makes it keep 20% or more hole according to the fixing fabric structure compacting amount of its calculated porous high-entropy alloy when precompressed.
(4) non-pressure sintering furnace is used, pressureless sintering is carried out in argon atmosphere environment, sets heating rate as 2 DEG C/min,
Sintering temperature is 1100 DEG C, and the sintered heat insulating time is 180 min, and furnace cooling after the completion of sintering then takes out sample.
(5) sample surfaces sanding and polishing.
(6) conventional machine oil, 10 ~ 120 Pa of vacuum degree are immersed under vacuum conditions, and the immersion oil time is 4 ~ 6 hours, guarantees lubrication
Oil is totally immersed in the porous structure of material.
Above-described embodiment 1 ~ 8 is only to clearly illustrate example of the present invention, and not to the limit of embodiment
It is fixed.To those of ordinary skill in the art, it can also make other variations or changes in different ways on the basis of the above.
There is no necessity and possibility to exhaust all the enbodiments.And thus changes and variations that derived from are still
Among protection scope of the present invention.
Claims (8)
1. a kind of high-entropy alloy-base self-lubricating oily bearing material, it is characterised in that: the material is by constituting the high-entropy alloy of skeleton
Powder and the solid lubricant powder being uniformly filled in skeleton are prior to sintering voids content into as 5 ~ 45% under protective atmosphere
Then product is completely immersed in lubricating oil under vacuum or heated condition to obtain the final product；The volume basis of the solid lubricant powder contains
Amount is 0 ~ 45%.
2. a kind of high-entropy alloy-base self-lubricating oily bearing material as described in claim 1, it is characterised in that: the high entropy closes
The partial size at bronze end is 5 ~ 150 μm, ingredient CoCrFeNiMox, wherein tetra- kinds of x=0.05 ~ 0.5, Co, Cr, Fe and Ni
The atomic percent of element is to connect near atomic ratio, i.e. Co:Cr:Fe:Ni=0.7 ~ 1.3:0.7 ~ 1.3:0.7 ~ 1.3:0.7 ~
1.3。
3. a kind of high-entropy alloy-base self-lubricating oily bearing material as described in claim 1, it is characterised in that: the solid profit
Lubrication prescription powder refers to that one or more of graphite, molybdenum disulfide, polytetrafluoroethylene (PTFE) and zinc sulphide, partial size are 2 ~ 120 μm.
4. a kind of high-entropy alloy-base self-lubricating oily bearing material as described in claim 1, it is characterised in that: the protection gas
Atmosphere refers to vacuum, hydrogen, argon gas, any one in nitrogen.
5. a kind of high-entropy alloy-base self-lubricating oily bearing material as described in claim 1, it is characterised in that: the sintering side
Method refers to hot-pressing sintering method or pressureless sintering method.
6. a kind of high-entropy alloy-base self-lubricating oily bearing material as claimed in claim 5, it is characterised in that: the hot pressing is burnt
The condition of knot refers to that sintering pressure is 0.2 ~ 10 MPa, and sintering temperature is 900 ~ 1300 DEG C, and the sintered heat insulating time is 5 ~ 240
Min, heating rate are 30 ~ 300 DEG C/min.
7. a kind of high-entropy alloy-base self-lubricating oily bearing material as claimed in claim 5, it is characterised in that: described to be burnt without pressure
Knot method refers to that then the sinter molding in non-pressure sintering furnace, sintering temperature are 900 ~ 1300 first using mold pre-molding
DEG C, the sintered heat insulating time is 30 ~ 240 min, and heating rate is 2 ~ 15 DEG C/min.
8. a kind of high-entropy alloy-base self-lubricating oily bearing material as described in claim 1, it is characterised in that: the lubricating oil
Refer to any in polyalphaolefin PAO series of lubricant oil, conventional machine oil, engine lubricating oil, gear oil, bobbin oil and cylinder oil
It is a kind of.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110938770A (en) * | 2019-12-26 | 2020-03-31 | 中国科学院兰州化学物理研究所 | Dynamic sealing material and preparation method and application thereof |
| CN111085685A (en) * | 2019-12-26 | 2020-05-01 | 中国科学院兰州化学物理研究所 | Porous high-entropy alloy material and preparation method and application thereof |
| CN111218603A (en) * | 2020-03-10 | 2020-06-02 | 中国科学院兰州化学物理研究所 | Preparation method of high-entropy alloy-based high-temperature solid lubricating composite material |
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| CN110938770A (en) * | 2019-12-26 | 2020-03-31 | 中国科学院兰州化学物理研究所 | Dynamic sealing material and preparation method and application thereof |
| CN111390166B (en) * | 2020-01-17 | 2022-04-05 | 中国科学院兰州化学物理研究所 | High-entropy alloy-based self-lubricating composite material with imitated lattice structure and containing solid lubricant |
| CN111390166A (en) * | 2020-01-17 | 2020-07-10 | 中国科学院兰州化学物理研究所 | High-entropy alloy-based self-lubricating composite material with imitated lattice structure and containing solid lubricant |
| CN111218603B (en) * | 2020-03-10 | 2022-03-29 | 中国科学院兰州化学物理研究所 | Preparation method of high-entropy alloy-based high-temperature solid lubricating composite material |
| CN111218603A (en) * | 2020-03-10 | 2020-06-02 | 中国科学院兰州化学物理研究所 | Preparation method of high-entropy alloy-based high-temperature solid lubricating composite material |
| CN111664182A (en) * | 2020-05-26 | 2020-09-15 | 南京理工大学 | Powder metallurgy self-lubricating oil-retaining bearing and preparation method thereof |
| CN113651619A (en) * | 2021-09-14 | 2021-11-16 | 河海大学 | High-entropy ceramic powder for marine diesel engine, application and application method |
| CN114033800A (en) * | 2021-11-24 | 2022-02-11 | 江苏科技大学 | Surface composite texture with slow-release effect on solid lubricant and preparation method thereof |
| CN114033800B (en) * | 2021-11-24 | 2024-01-23 | 江苏科技大学 | Surface composite texture with slow release function on solid lubricant and preparation method thereof |
| CN114107715A (en) * | 2021-11-30 | 2022-03-01 | 中国科学院兰州化学物理研究所 | FeCoCrNiMo-based high-entropy alloy composite material and preparation method and application thereof |
| CN114107715B (en) * | 2021-11-30 | 2022-05-13 | 中国科学院兰州化学物理研究所 | FeCoCrNiMo-based high-entropy alloy composite material and preparation method and application thereof |
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