CN108838387A - A kind of lubricate mutually is BaFe12O9Novel 20CrMnTi based self lubricated composite material and preparation method thereof - Google Patents
A kind of lubricate mutually is BaFe12O9Novel 20CrMnTi based self lubricated composite material and preparation method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000007787 solid Substances 0.000 claims abstract description 30
- 230000001050 lubricating effect Effects 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 239000004615 ingredient Substances 0.000 claims abstract description 10
- 238000005461 lubrication Methods 0.000 claims abstract description 10
- 238000011065 in-situ storage Methods 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 63
- 238000005245 sintering Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 16
- 239000011863 silicon-based powder Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000003805 vibration mixing Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 238000000280 densification Methods 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 229910000765 intermetallic Inorganic materials 0.000 abstract description 3
- 239000010936 titanium Substances 0.000 description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 description 8
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/105—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing inorganic lubricating or binding agents, e.g. metal salts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
It is mutually BaFe the present invention relates to a kind of lubrication12O9Novel 20CrMnTi based self lubricated composite material and preparation method thereof, include the following steps, be Fe with mass ratio:Cr:Mn:Ti:Si=97.35:1.22:0.96:0.13:0.34 main component as 20CrMnTi based composites chooses BaFe12O9It (wt%) is solid lubricating phase, addition mass fraction is (10.0-20.0) wt.% of 20CrMnTi based composites gross mass;Above-mentioned ingredient is placed in be mixed dry-mixed in vibration batch mixer, obtains sintered material;Sintered material is subjected to fabricated in situ using plasma discharging technology, obtains a kind of lubricate mutually for BaFe12O9Novel 20CrMnTi based self lubricated composite material.Solid lubricating phase BaFe12O9Excellent anti-wear and wear-resistant performance is shown during fretting wear, so that 20CrMnTi based self lubricated composite material obtains small coefficient of friction and low wear rate, the tribological property of 20CrMnTi intermetallic compound is greatly improved, application of the 20CrMnTi material in the industrial circles such as Aeronautics and Astronautics and automobile has further been pushed.Moreover, it has been found that this novel 20CrMnTi based self lubricated composite material preparation method is simple and fast, technological parameter is easy to control in preparation process, has good application development prospect.
Description
Technical field
It is mutually BaFe the present invention relates to a kind of lubrication12O9Novel 20CrMnTi based self-lubricating material and preparation method thereof.
Background technique
The industrial technology especially rapid development of Aeronautics and Astronautics technology of today and some extreme operating condition conditions are such as high
Moving component under the environment such as temperature, high load, intense radiation has high temperature resistant, the performances such as wear-resistant of lubriation material higher and higher
Requirement.Therefore, develop solid lubrication technology, novel self-lubricating antifriction wear-resistant material is researched and developed, to efficiently solve traditional profit
Lubrication failure problem of the sliding material under harsh operating condition is imperative.20CrMnTi have high-intensitive and good moulding and
Toughness, good stability, high reliablity, the good feature of safety have been widely used in Aeronautics and Astronautics, automobile, metallurgy and have built
In the industrial circles such as material, and show huge development potentiality and urgent need.【20CrMnTi steel tempering organization and performance research
[J] shuts out Enermax Arms Material scientific and engineering .1994 (06)】, metallurgical industry【20CrMnTi smelting process control aluminium protects titanium production
Practice the auspicious .2015 of [J] Li Yu (03)】, auto industry【Banded structure grinds in elimination automobile driving gear steel 20CrMnTi
Study carefully [J] face gift function, Li Zeng, Zhou Xiaoling .2006 (05)】.Therefore, 20CrMnTi intermetallic compound how is further increased to exist
The mechanical properties such as intensity, hardness under harsh conditions and tribological property are the premise items for meeting development of modern industry demand
Part.For its application range in industrial circle of further expansion, with BaFe12O9It is mutually prepared for lubrication a kind of novel
20CrMnTi based self-lubricating material, for improving tribology of the 20CrMnTi intermetallic compound under extreme harsh environment
Can, it just seems very necessary and urgent.
Summary of the invention
It is mutually BaFe the purpose of the present invention is to provide a kind of lubrication12O9Novel 20CrMnTi based self lubricated composite material
And preparation method thereof.The preparation of the self-lubricating composite is 20CrMnTi matrix powder and BaFe12O9Solid lubricant powder
End carries out fabricated in situ under the action of discharging plasma sintering equipment, obtains a kind of lubricate mutually for BaFe12O9It is novel
20CrMnTi based self lubricated composite material.Its preparation process can guarantee prepared 20CrMnTi based self lubricated composite material tool
There are good tribological property, excellent thermal property etc. and preparation process is environment friendly and pollution-free, preparation technology parameter is easy to control
Deng.
It is mutually BaFe to prepare a kind of lubricate12O9Novel 20CrMnTi based self lubricated composite material, the system taken
It is for scheme:
A kind of novel 20CrMnTi based self lubricated composite material, it by Fe powder, Cr powder, Mn powder, Ti powder, Si powder and
BaFe12O9Starting powder is prepared.Wherein, Fe powder, Cr powder, Mn powder, Ti powder and Si powder are the master of 20CrMnTi basis material
Want constituent, mass ratio 97.35:1.22:0.96:0.13:0.34.Starting powder BaFe12O9Moisten certainly for 20CrMnTi base
The solid lubricating phase of sliding composite material, addition mass fraction are the 10.0-20.0wt.% of 20CrMnTi basis material.
The preparation method and its technical process of a kind of novel 20CrMnTi based self lubricated composite material have following steps:
1) initial powder matches:Choose BaFe12O9Powder is the solid lubricating phase of 20CrMnTi sill, and mass fraction is
10.0-20.0wt.%.Adding it to mass ratio is 97.35Fe:1.22Cr:0.96Mn:0.13Ti:0.34Si's
In 20CrMnTi matrix powder, the initial formulation powder of 20CrMnTi based self lubricated composite material is obtained;
2) mix:Above-mentioned initial ingredients are placed in vibration batch mixer and carry out vibration mixing, it is equal to obtain mixing mixing
Even discharge plasma sintering ingredient;
3) plasma discharging material in situ synthesizes:By initial mixing ingredient using the method for discharge plasma sintering obtain with
BaFe12O9For the novel 20CrMnTi based self lubricated composite material of solid lubricating phase.
In the step 2), the experimental provision outer tank that vibration mixing uses is cylinder of steel, and inner canister is polytetrafluoroethylene (PTFE), vibration frequency
Rate is 10~90Hz, vibration force 5000-15000N, time of vibration 30-70min.
In the step 3, the one kind prepared using plasma discharging technology is with BaFe12O9For the novel of solid lubricating phase
20CrMnTi based self lubricated composite material.The composite material prepared has institutional framework fine and close, grain size distribution uniformly and
The advantages that without crystal defect.
In the step 3), sintering temperature is 600-1200 DEG C, heating rate is 70-100 DEG C/min, sintering pressure is
15-30MPa, vacuum degree 0.01-0.02Pa, soaking time 20-40min.
Feasibility of the invention is:
1, the prices of raw materials needed for preparing are cheap, from a wealth of sources.Preparation is with BaFe12O9For the novel of solid lubricating phase
Equipment cost needed for 20CrMnTi based self lubricated composite material is lower and easily operated, is suitble to batch, large-scale production and application.
2, preparation method is novel, and preparation process is simple, high-efficient:With BaFe12O9For the novel of solid lubricating phase
20CrMnTi based self lubricated composite material preparation process simplicity, energy-saving and environmental protection, low pollution, preparation efficiency are high.
3, the 20CrMnTi based self lubricated composite material function admirable prepared, widely used:Utilize plasma discharging skill
One kind that art is prepared is with BaFe12O9For the novel 20CrMnTi based self lubricated composite material of solid lubricating phase.It the advantage is that
Sintering reaction is stablized, and the period is short, and the self-lubricating composite institutional framework prepared is fine and close, excellent in mechanical performance, anti-friction wear-resistant
Better performances, and the preferred of transmission gear in extreme circumstances can be widely used as in the industrial circles such as Aeronautics and Astronautics and automobile
Material.
4, one kind is prepared with BaFe using discharge plasma sintering technique12O9For the novel 20CrMnTi base of solid lubricating phase
Self-lubricating composite has the combined coefficient of composite material and is significantly promoted, further saves the energy, avoid because of original
Beginning powder BaFe12O9Addition caused by miscellaneous phase generate, and reduce the synthesis cost of composite material.
In conclusion one kind that the present invention is prepared using discharge plasma sintering technique is with BaFe12O9For solid lubrication
The novel 20CrMnTi based self lubricated composite material and its synthetic method of phase have preparation process simple, and preparation efficiency is high and easy
In operation, stable reaction during the preparation process, energy conservation and environmental protection etc..And the self-lubricating composite prepared is with higher mutually pure
Degree, good compactness, excellent properties of antifriction and wear resistance.And preparation process is simple, quick, high-efficient, and it is raw to be suitable for batch
It produces and applies.
Detailed description of the invention
Fig. 1 is one kind with BaFe12O9For the novel 20CrMnTi based self lubricated composite material preparation process of solid lubricating phase
Process.
Fig. 2 is with BaFe12O9For solid lubricant powder field emission scanning electron microscope shape appearance figure.
Fig. 3 be in the embodiment of the present invention 2 one kind with BaFe12O9Exist to lubricate the novel 20CrMnTi based self-lubricating material of phase
The electron probe figure of the polishing scratch obtained after friction-wear test.
Fig. 4 and Fig. 5 is respectively under room temperature, to test one kind obtained by the embodiment of the present invention 1,2,3 with BaFe12O9For
Lubricate the coefficient of friction and wear rate of the novel 20CrMnTi based self-lubricating material of phase.
Specific embodiment
Below in conjunction with drawings and examples, further the present invention will be described, but the contents of the present invention are not limited solely to
The following examples.
Embodiment 1:
As shown in Figure 1, one kind is with BaFe12O9It is prepared for the novel 20CrMnTi based self lubricated composite material of solid lubricating phase
Process flow:
1) initial powder matches:20CrMnTi basis material mainly by Fe powder, Cr powder, Mn powder, Ti powder and Si powder prepare and
At.Fe powder, Cr powder, Mn powder, Ti powder and Si powder mass ratio are 97.35:1.22:0.96:0.13:0.34.With BaFe12O9Powder is
The solid lubricating phase of 20CrMnTi based self lubricated composite material, addition mass ratio are the 10.0wt.% of 20CrMnTi basis material;
2) mix:By above-mentioned initial ingredients be placed in vibration batch mixer in carry out it is dry-mixed, vibration batch mixer outer tank be steel
Tank, inner canister are polytetrafluoroethylene (PTFE), vibration frequency 30Hz, vibration force 8000N, duration of oscillation 30min, obtain sintering and match
Material;
3) one kind is prepared with BaFe using plasma discharging technology12O9Moisten certainly for the novel 20CrMnTi base of solid lubricating phase
Sliding composite material, sintering process are:Sintering temperature is 950 DEG C, heating rate is 70 DEG C/min, sintering pressure 25MPa, true
Reciprocal of duty cycle is 1 × 10-1Pa, soaking time 20min;
Fig. 2 show BaFe12O9The powder field emission scanning electron microscope shape appearance figure of solid lubricating phase;
Fig. 3 be in the embodiment of the present invention 2 one kind with BaFe12O9Exist to lubricate the novel 20CrMnTi based self-lubricating material of phase
The electron probe figure of the polishing scratch obtained after friction-wear test.
It is 15N, sliding velocity 0.5m/s, sliding time 80min in load, opposite grinding pair is Si3N4Ceramic Balls, normal
Under the test condition that temperature and humidity is 50%, the coefficient of friction and wear rate of acquisition are as shown in figs. 4 and 5.By Fig. 4 and Fig. 5 it is found that
One kind prepared by embodiment 1 is with BaFe12O9For the novel 20CrMnTi based self lubricated composite material polishing scratch table of solid lubricating phase
Face is relatively smooth, is decreased considerably its frictional resistance with material loss, and the average friction coefficient of acquisition is smaller (0.30), mill
Loss rate lower (4.15 × 10-4mm3/(Nm))。
Embodiment 2:
1) initial powder matches:20CrMnTi basis material mainly by Fe powder, Cr powder, Mn powder, Ti powder and Si powder prepare and
At.Fe powder, Cr powder, Mn powder, Ti powder and Si powder mass ratio are 97.35:1.22:0.96:0.13:0.34.With BaFe12O9Powder is
The solid lubricating phase of 20CrMnTi based self lubricated composite material, addition mass ratio are the 15.0wt.% of 20CrMnTi basis material.
2) mix:By above-mentioned initial ingredients be placed in vibration batch mixer in carry out it is dry-mixed, vibration batch mixer outer tank be steel
Tank, inner canister are polytetrafluoroethylene (PTFE), vibration frequency 45Hz, vibration force 11000N, duration of oscillation 50min, obtain sintering and match
Material;
3) one kind is prepared with BaFe using plasma discharging technology12O9Moisten certainly for the novel 20CrMnTi base of solid lubricating phase
Sliding composite material, sintering process are:Sintering temperature is 1000 DEG C, heating rate is 80 DEG C/min, sintering pressure 27MPa,
Vacuum degree is 1.5 × 10-1Pa, soaking time 30min.
It is 10N, sliding velocity 0.3m/s, sliding time 80min in load, opposite grinding pair is Si3N4Ceramic Balls, normal
Under the test condition that temperature and humidity is 50%, the coefficient of friction and wear rate of acquisition are as shown in figs. 4 and 5.It can by Fig. 4 and Fig. 5
Know, one kind prepared by embodiment 2 is with BaFe12O9It is obtained for the novel 20CrMnTi based self lubricated composite material of solid lubricating phase
The average friction coefficient obtained is smaller, and about 0.28, wear rate is lower, and about 4.05 × 10-4mm3/(Nm)。
Embodiment 3:
1) initial powder matches:20CrMnTi basis material mainly by Fe powder, Cr powder, Mn powder, Ti powder and Si powder prepare and
At.Fe powder, Cr powder, Mn powder, Ti powder and Si powder mass ratio are 97.35:1.22:0.96:0.13:0.34.With BaFe12O9Powder is
The solid lubricating phase of 20CrMnTi based self lubricated composite material, addition mass ratio are the 20.0wt.% of 20CrMnTi basis material;
2) mix:By above-mentioned initial ingredients be placed in vibration batch mixer in carry out it is dry-mixed, vibration batch mixer outer tank be steel
Tank, inner canister are polytetrafluoroethylene (PTFE), vibration frequency 60Hz, vibration force 14000N, duration of oscillation 70min, obtain sintering and match
Material;
3) one kind is prepared with BaFe using plasma discharging technology12O9Moisten certainly for the novel 20CrMnTi base of solid lubricating phase
Sliding composite material, sintering process are::Sintering temperature is 1200 DEG C, heating rate is 100 DEG C/min, sintering pressure is
30MPa, vacuum degree are 2 × 10-1Pa, soaking time 40min;
It is 20N, sliding velocity 0.7m/s, sliding time 80min in load, opposite grinding pair is Si3N4Ceramic Balls, normal
Under the test condition that temperature and humidity is 50%, the coefficient of friction and wear rate of acquisition are as shown in figs. 4 and 5.By Fig. 4 and Fig. 5 it is found that
One kind prepared by embodiment 2 is with BaFe12O9For solid lubricating phase novel 20CrMnTi based self lubricated composite material obtain
Average friction coefficient is smaller, and about 0.26, wear rate is lower, and about 4.08 × 10-4mm3/(Nm).20CrMnTi base self-lubricating material
Material indicates good tribological property, can be expansionary very well and with property, suitable for mass production and application.
Each raw material cited by the present invention can realize that the bound value of the present invention and each raw material, interval value can
Realize the present invention, the bound value and interval value of technological parameter (such as frequency, temperature, time, vacuum degree) of the invention
It can realize the present invention, embodiment numerous to list herein.
Claims (5)
1. a kind of novel 20CrMnTi based self lubricated composite material, it is by Fe powder, Cr powder, Mn powder, Ti powder, Si powder and BaFe12O9
Starting powder is prepared.Wherein, Fe powder, Cr powder, Mn powder, main composition that Ti powder and Si powder are 20CrMnTi basis material at
Point, mass ratio 97.35:1.22:0.96:0.13:0.34.Starting powder BaFe12O9For 20CrMnTi base self-lubricating composite wood
The solid lubricating phase of material, addition mass fraction are the 10.0-20.0wt.% of 20CrMnTi basis material.
2. the preparation method and its technical process of a kind of novel 20CrMnTi based self lubricated composite material have following steps:
1) initial powder matches:Choose BaFe12O9Powder is the solid lubricating phase of 20CrMnTi sill, and mass fraction is
10.0-20.0wt.%.Adding it to mass ratio is 97.35Fe:1.22Cr:0.96Mn:0.13Ti:0.34Si's
In 20CrMnTi matrix powder, the initial formulation powder of 20CrMnTi based self lubricated composite material is obtained;
2) mix:Above-mentioned initial ingredients are placed in vibration batch mixer and carry out vibration mixing, obtain what mixing was uniformly mixed
Discharge plasma sintering ingredient;
3) plasma discharging material in situ synthesizes:By initial mixing ingredient using the method for discharge plasma sintering obtain with
BaFe12O9For the novel 20CrMnTi based self lubricated composite material of solid lubricating phase.
3. as claimed in claim 2 with BaFe12O9For the preparation of the novel 20CrMnTi based self lubricated composite material of lubrication phase
Method, mixing condition are that step 2) is described.The experimental provision outer tank that vibration mixing uses is cylinder of steel, and inner canister is polytetrafluoroethyl-ne
Alkene, vibration frequency are 10~90Hz, vibration force 5000-15000N, time of vibration 30-70min.
4. as claimed in claim 2 with BaFe12O9For the preparation of the novel 20CrMnTi based self lubricated composite material of lubrication phase
Method, preparation process are the step 3).The one kind prepared using plasma discharging technology is with BaFe12O9For solid profit
The novel 20CrMnTi based self lubricated composite material of sliding phase.The composite material prepared has institutional framework densification, crystallite dimension
It is evenly distributed and the advantages that without crystal defect.
5. as claimed in claim 2 with BaFe12O9For the preparation of the novel 20CrMnTi based self lubricated composite material of lubrication phase
Method, sintering process are that step 3) is described.Sintering temperature is 600-1200 DEG C, heating rate is 70-100 DEG C/min, burning
Knot pressure power is 15-30MPa, vacuum degree 0.01-0.02Pa, soaking time 20-40min.
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