CN107058808B - A kind of aluminium alloy base solid lubricating composite material and preparation method thereof - Google Patents
A kind of aluminium alloy base solid lubricating composite material and preparation method thereof Download PDFInfo
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- CN107058808B CN107058808B CN201710028988.6A CN201710028988A CN107058808B CN 107058808 B CN107058808 B CN 107058808B CN 201710028988 A CN201710028988 A CN 201710028988A CN 107058808 B CN107058808 B CN 107058808B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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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
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0084—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ carbon or graphite as the main non-metallic constituent
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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
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
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Abstract
The invention discloses a kind of aluminium alloy base solid lubricating composite materials and preparation method thereof.The material is made of the heat-resisting aluminium alloy of 75~95 wt% and the Cu-cladding Al Rod of 5~25 wt%；The composition of heat-resisting aluminium alloy are as follows: 8.4~8.9 wt%Fe, 1.1~1.5 wt%V, 1.7~1.9 wt%Si, surplus Al；The composition of Cu-cladding Al Rod are as follows: 50 wt%Cu and 50 wt%C.Solid lubricating composite material has the characteristics that density is low, coefficient of friction is low, wear rate is low, and preparation process is simple, controllability is good, the material is suitble in room temperature to using at 350 DEG C, with important application prospects in aerospace and automobile manufacturing field as solid lubricant.
Description
Technical field
The present invention relates to a kind of aluminium alloy base solid lubricating composite materials and preparation method thereof, and the material is in room temperature to 350
There is good greasy property within the scope of oC, there is good application background as self-lubricating material under high temperature, without oil environment.
Background technique
Aluminium alloy is being navigated due to the advantages that density is low, specific strength is high, thermal expansion coefficient is low, thermal conductivity is good, corrosion resistance is good
The fields such as sky, space flight, automobile, ship are applied widely.However, aluminium alloy is limited since coefficient of friction is big and wear rate is high
It has been made in the application of friction field.In order to improve the frictional behaviour of aluminium alloy, need alloy matrix aluminum add reinforced phase or
Solid lubricant obtains aluminum matrix composite.Currently used reinforced phase has SiC, Al2O3, common solid lubricant includes
Graphite, MoS2And WS2.Patent CN105525153A uses 60~75% Al, 20~30% silicon, 5~12% carbon, and≤1.0%
Iron ,≤2.0% magnesium ,≤0.8% titanium are prepared for a kind of enhancing aluminum-base composite material by silicon carbide particles brake disc.Patent
CN105525161A is used: 11~14% Si, 4~6% Cu, 0.2~1.2% Mg, 1~4% Ni, 0.01~0.4%
Ti, 0.05~0.2% V, 0.1~0.3% Mn, 0.1~0.3% Zn, 0.2~10% nano aluminium oxide (surplus is aluminium) system
For a kind of wear-resisting extra super duralumin alloy material of piston.Patent CN101054644 is added to 7 respectively in alloy matrix aluminum~
12% copper-plated graphite, 10~18% copper-plated graphite and copper carbon fiber mixture, 10~17% copper-plated graphite and nickel plating carbon fiber
Dimension mixture is prepared for a kind of aluminium-based self-lubricating material.But since these aluminum matrix composites use common aluminium alloy,
So that its high temperature resistance is poor, cannot use under high temperature environment.
The performance of metal-base composites depends on the compatibility between matrix, reinforced phase and matrix and reinforced phase, so
The preparation of aluminum matrix composite selects suitable alloy matrix aluminum most important.1 system to 7 line aluminium alloys of mature application at present,
Although having enough intensity at room temperature, intensity is reduced rapidly at high temperature, limits its scope of application.For this purpose, novel
Al-Fe-V-Si series heat-resisting aluminium alloy can as the aluminium alloy that can be compared favourably with heat resisting steel and titanium alloy at 350 oC
To be selected as the best basis material of high temperature aluminium base solid lubricating composite material.
Summary of the invention
The object of the present invention is to provide a kind of aluminium alloys can within the scope of room temperature to 350 oC with favorable lubricating property
Base solid lubricating composite material and preparation method thereof.
A kind of aluminium alloy base solid lubricating composite material, it is characterised in that the material by 75~95 wt% heat-resisting aluminium alloy
It is formed with the Cu-cladding Al Rod of 5~25 wt%；The composition of the heat-resisting aluminium alloy are as follows: 8.4~8.9 wt% Fe, 1.1~1.5 wt%
V, 1.7~1.9 wt% Si, surplus Al；The composition of the Cu-cladding Al Rod are as follows: 50 wt% Cu and 50 wt% C.
The preparation method of aluminium alloy base solid lubricating composite material as described above, it is characterised in that use hot-pressing sintering method
Preparation, the specific steps are as follows:
Heat-resisting aluminium alloy powder and Cu-cladding Al Rod powder ball milling are obtained into mixed-powder, mixed-powder is then placed in vacuum
It is sintered in hot-pressed sintering furnace, the sintering parameter are as follows: vacuum degree 10-2~10-1Pa, 10~30 oC/min of heating rate,
600~650 oC of sintering temperature, 30~40 MPa of pressure, 20~40 min of soaking time；Composite material is with furnace after the completion of sintering
It is cooled to room temperature to obtain aluminium alloy based self lubricated composite material.
The ball milling parameter are as follows: 1~3:1 of ratio of grinding media to material, 200~300 r/min of revolving speed, 4~8 h of Ball-milling Time, grinding jar and
Abrading-ball is Talide, and ball milling is filled with argon gas before starting.
Using the density of Archimedes principle measurement material.Using the hardness of micro Vickers test material, test
Condition are as follows: 300 g of load loads 10 s of duration.Friction and wear behavior using HT -1000 high temperature friction and wear testing machine into
Row evaluation, antithesis ball are Al2O3Ceramics, load are 3 N, and sliding linear velocity is 0.188 m/s, and friction radius is 5 mm, when operation
Between be 30 min, test temperature be 25 oC, 150 oC, 250 oC and 350 oC.
The present invention use above-mentioned material composition and technological parameter preparation aluminium alloy base solid lubricating composite material have with
Lower advantage:
The features of the present invention first is that, density of material is low, hardness is high.
The features of the present invention second is that, the coefficient of friction of material it is lower and stablize, wear rate is lower, material room temperature extremely
There is favorable lubricating property within the scope of 350 oC.
The features of the present invention third is that, preparation process is simple, by be formulated and technique adjustment, can be with controlled material
Energy.
Aluminium alloy base solid lubricating composite material has the characteristics that density is low, coefficient of friction is low, wear rate is low, and prepares
Simple process, controllability are good, which is suitble in room temperature to using at 350 DEG C, as solid lubricant in aerospace and
Automobile manufacturing field is with important application prospects.
Detailed description of the invention
Fig. 1 is the room temperature friction curve of aluminium alloy base solid lubricating composite material prepared by the embodiment of the present invention 1.
Fig. 2 is the room temperature friction curve of aluminium alloy base solid lubricating composite material prepared by the embodiment of the present invention 2.
Fig. 3 is the friction curve under 350 oC of aluminium alloy base solid lubricating composite material prepared by the embodiment of the present invention 1.
Specific embodiment
Embodiment 1:
According to mass percent, 90% heat-resisting aluminium alloy and 10% Cu-cladding Al Rod powder are weighed respectively, wherein aluminium alloy
The group of powder becomes Al-8.5Fe-1.3V-1.7Si；Then powder is placed in high energy ball mill, is filled with argon gas, ratio of grinding media to material is
2:1 mixes 4 h under 200 r/min speed conditions and obtains mixed-powder.Then mixed-powder is fitted into graphite jig, is set
It is sintered in vacuum sintering funace.Sintering parameter are as follows: vacuum degree is lower than 5 × 10-1Pa, 15 oC/min of heating rate, sintering
620 oC of temperature, 35 MPa of pressure, 30 min of soaking time.After sintering, composite material cools to room temperature with the furnace and obtains aluminium
Alloy-based solid lubricating composite material.
The density of material is 2.91 g/cm3, hardness is 56.3 HV, and composite material is in 25 oC to 350 oC temperature ranges
Interior coefficient of friction and wear rate is shown in Table 1.
Table 1: 1 material of embodiment and Al2O3Ceramic Balls are with secondary coefficient of friction and wear rate
Embodiment 2:
According to mass percent, 85% heat-resisting aluminium alloy and 15% Cu-cladding Al Rod powder are weighed respectively, wherein aluminium alloy
The group of powder becomes Al-8.5Fe-1.3V-1.7Si；Then powder is placed in high energy ball mill, is filled with argon gas, ratio of grinding media to material is
3:1 mixes 4 h under 250 r/min speed conditions and obtains mixed-powder.Then mixed-powder is fitted into graphite jig, is set
It is sintered in vacuum sintering funace.Sintering parameter are as follows: vacuum degree is lower than 5 × 10-1Pa, 10 oC/min of heating rate, sintering
600 oC of temperature, 30 MPa of pressure, 30 min of soaking time.After sintering, composite material cools to room temperature with the furnace and obtains aluminium
Alloy-based solid lubricating composite material.
The density of material is 2.911 g/cm3, hardness is 74.5 HV, and composite material is in 25 oC to 350 oC temperature ranges
Interior coefficient of friction and wear rate is shown in Table 2.
Table 2: 2 material of embodiment and Al2O3Ceramic Balls are with secondary coefficient of friction and wear rate
Embodiment 3:
According to mass percent, 80% heat-resisting aluminium alloy and 20% Cu-cladding Al Rod powder are weighed respectively, wherein aluminium alloy
The group of powder becomes Al-8.5Fe-1.3V-1.7Si；Then powder is placed in high energy ball mill, is filled with argon gas, ratio of grinding media to material is
3:1 mixes 6 h under 220 r/min speed conditions and obtains mixed-powder.Then mixed-powder is fitted into graphite jig, is set
It is sintered in vacuum sintering funace.Sintering parameter are as follows: vacuum degree is lower than 5 × 10-1Pa, 10 oC/min of heating rate, sintering
610 oC of temperature, 35 MPa of pressure, 30 min of soaking time.After sintering, composite material cools to room temperature with the furnace and obtains aluminium
Alloy-based solid lubricating composite material.
The density of material is 2.938 g/cm3, hardness is 63.8 HV, in 25 oC of composite material to 350 oC temperature ranges
Coefficient of friction and wear rate be shown in Table 3.
Table 3: 3 material of embodiment and Al2O3Ceramic Balls are with secondary coefficient of friction and wear rate
。
Claims (2)
1. a kind of aluminium alloy base solid lubricating composite material, it is characterised in that the material by 75~95 wt% heat-resisting aluminium alloy and
The Cu-cladding Al Rod of 5~25 wt% forms；The composition of the heat-resisting aluminium alloy are as follows: 8.4~8.9 wt% Fe, 1.1~1.5 wt%
V, 1.7~1.9 wt% Si, surplus Al；The composition of the Cu-cladding Al Rod are as follows: 50 wt% Cu and 50 wt% C；
The solid lubricating composite material is prepared using hot-pressing sintering method, the specific steps are as follows:
Heat-resisting aluminium alloy powder and Cu-cladding Al Rod powder ball milling are obtained into mixed-powder, mixed-powder is then placed in vacuum hotpressing
It is sintered in sintering furnace, the sintering parameter are as follows: vacuum degree 10-2~10-1Pa, 10~30 oC/min of heating rate, sintering
600~650 oC of temperature, 30~40 MPa of pressure, 20~40 min of soaking time；Composite material furnace cooling after the completion of sintering
Aluminium alloy based self lubricated composite material is obtained to room temperature.
2. solid lubricating composite material as described in claim 1, it is characterised in that the ball milling parameter are as follows: ratio of grinding media to material 1~3:
1,200~300 r/min of revolving speed, 4~8 h of Ball-milling Time, grinding jar and abrading-ball are Talide, and ball milling is filled with before starting
Argon gas.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108002844B (en) * | 2017-11-22 | 2020-11-03 | 中国科学院兰州化学物理研究所 | Wide-temperature-range self-lubricating sialon-based composite material |
| CN108405854A (en) * | 2018-02-07 | 2018-08-17 | 苏州金言来新材料科技有限公司 | A kind of vacuum sintering method making self-lubricating workpiece |
| CN109434125A (en) * | 2018-12-11 | 2019-03-08 | 安阳工学院 | A kind of NiTiAl based self lubricated composite material and preparation method thereof with self regulating and control function |
| CN110293230A (en) * | 2019-06-06 | 2019-10-01 | 徐州圣邦机械有限公司 | A kind of New _ Typed Internal Gears pump swing link and preparation method thereof |
| CN110184507A (en) * | 2019-06-14 | 2019-08-30 | 李筱穗 | A kind of novel graphite-aluminium-based self-lubricating material that can effectively improve greasy property |
| CN112575215B (en) * | 2020-11-24 | 2021-09-21 | 南通众福新材料科技有限公司 | High-toughness aluminum alloy material for new energy automobile and method |
| CN114000013B (en) * | 2021-10-15 | 2022-05-27 | 中国航发北京航空材料研究院 | Self-lubricating aluminum-based composite material and preparation method thereof |
| CN114876989B (en) * | 2022-05-11 | 2023-10-27 | 江苏川钿明椿电气机械有限公司 | Aluminum-based brake friction plate and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054644A (en) * | 2007-05-25 | 2007-10-17 | 东北大学 | Aluminum-base alloy self-lubricating material and preparation method thereof |
| CN105328180A (en) * | 2015-11-16 | 2016-02-17 | 利辛县江淮扬天汽车有限公司 | High-strength wear-resisting aluminum-based powder metallurgy bearing material |
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- 2017-01-16 CN CN201710028988.6A patent/CN107058808B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054644A (en) * | 2007-05-25 | 2007-10-17 | 东北大学 | Aluminum-base alloy self-lubricating material and preparation method thereof |
| CN105328180A (en) * | 2015-11-16 | 2016-02-17 | 利辛县江淮扬天汽车有限公司 | High-strength wear-resisting aluminum-based powder metallurgy bearing material |
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