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A porous self-lubricating fe 2 b-fe cermet composite material and preparation method thereof

A cermet and composite material technology, which is applied in the field of self-lubricating material preparation, can solve the problems of high brittleness, poor impact resistance and low penetration of the ceramic matrix, and achieve the effects of low production cost, good toughness and excellent wear resistance.

Active Publication Date: 2020-03-17
山东晶希瓷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Porous polymer self-lubricating materials often use polyether ether ketone and polyphenylene sulfide as the matrix, but the polymer matrix has problems such as insufficient strength, disordered pores, low connectivity, and low porosity.
Porous ceramic self-lubricating materials are based on zirconia, silicon carbide and alumina, but the ceramic matrix itself is brittle, poor in impact resistance, and at the same time, the cost is too high

Method used

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  • A porous self-lubricating fe <sub>2</sub> b-fe cermet composite material and preparation method thereof
  • A porous self-lubricating fe <sub>2</sub> b-fe cermet composite material and preparation method thereof
  • A porous self-lubricating fe <sub>2</sub> b-fe cermet composite material and preparation method thereof

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preparation example Construction

[0028] A kind of porous self-lubricating Fe of the present invention 2 The preparation method of B-Fe cermet composite material, comprises the following steps:

[0029] S1, weigh reduced iron powder and boron powder according to 8.8wt.% B batching, put into ball mill tank and carry out ball mill once, ball mill tank and ball are made of stainless steel, ball-to-material ratio (6~10): 1, rotating speed is 250r / min, load powder and balls before ball milling, vacuumize the ball mill tank, and then pass in argon protection;

[0030] Among them, the ball milling time is 40-50 hours.

[0031] S2, then add reduced iron powder with a mass of 4 to 12 times the mass of the powder in the ball mill tank, and perform secondary ball milling. After the ball milling is completed, fill the mixed powder into the mold;

[0032] Among them, the secondary ball milling time is 10-20 hours.

[0033] S3, then put the mold into a vacuum sintering furnace for sintering to obtain porous Fe 2 B-Fe ce...

Embodiment 1

[0039] (1) Weigh the reduced iron powder and boron powder according to the ingredients of 8.8wt.% B, put them into a ball mill tank for a ball mill, the ball mill tank and balls are made of stainless steel, the ball-to-material ratio is 10:1, and the speed is 250r / min , the ball milling time is 50h, put powder and balls before ball milling, vacuumize the ball mill tank, and then pass in argon protection;

[0040] (2) Add reduced iron powder with 4 times the quality of the powder in the ball mill tank again, and carry out secondary ball milling. The ball milling time is 15 hours. After the ball milling is completed, the mixed powder is filled into the mould;

[0041] (3) Put the mold into a vacuum sintering furnace for sintering, the sintering temperature is 950°C, the sintering pressure is 20MPa, the heat preservation is 20min, and the vacuum degree is 10 -1 Pa, to obtain porous Fe 2 B-Fe cermet;

[0042] (4) Lubricating oil is introduced into the vacuum box, and the porous Fe...

Embodiment 2

[0046] (1) Weigh the reduced iron powder and boron powder according to the ingredients of 8.8wt.% B, put them into a ball mill tank for a ball mill, the ball mill tank and balls are made of stainless steel, the ball-to-material ratio is 6:1, and the speed is 250r / min , the ball milling time is 40h, put powder and balls before ball milling, vacuumize the ball mill tank, and then pass in argon protection;

[0047] (2) Add reduced iron powder with 7 times the quality of the powder in the ball mill tank again, and carry out secondary ball milling. The ball milling time is 15 hours. After the ball milling is completed, the mixed powder is filled into the mould;

[0048] (3) Put the mold into a vacuum sintering furnace for sintering, the sintering temperature is 1000°C, the sintering pressure is 30MPa, the heat preservation is 10min, and the vacuum degree is 10 -1 Pa, to obtain porous Fe 2 B-Fe cermet;

[0049] (4) Lubricating oil is introduced into the vacuum box, and the porous ...

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Abstract

The invention discloses a porous self-lubrication Fe2B-Fe metal ceramic composite material and a preparation method thereof. The preparation method comprises the steps: putting reduced ion powder andboron powder, weighing a B ingredient according to 8.8wt.%, putting into a ball milling tank for primarily ball milling, then adding the reduced iron powder with the mass as 4 to 12 times relative topowder in the ball milling tank, secondarily ball milling, filling a mould with mixed powder after ball milling is finished, vacuum sintering to obtain porous Fe2B-Fe metal ceramic and finally performing oil-impregnated treatment on the porous Fe2B-Fe metal ceramic in a vacuum box to prepare the porous self-lubrication Fe2B-Fe metal ceramic composite material. The preparation method disclosed by the invention has the advantages of low raw material cost and simple preparation technology, the prepared porous self-lubrication Fe2B-Fe metal ceramic composite material has the advantages of good toughness and wear resistance, and the porous self-lubrication Fe2B-Fe metal ceramic composite material has more excellent self-lubrication characteristic after being impregnated in oil.

Description

technical field [0001] The invention belongs to the technical field of self-lubricating materials preparation, in particular to a porous self-lubricating Fe 2 B-Fe cermet composite material and preparation method thereof. Background technique [0002] Porous self-lubricating composite material is a new type of engineering material, which has strong mechanical properties and excellent self-lubricating properties. Porous self-lubricating materials contain many ordered micro-pore structures, which can store lubricating additives. The material matrix itself has the advantages of high strength, small internal pore diameter, high density, and uniform internal pore size distribution. The matrix absorbs and stores lubricating oil or grease through the uniform and rich internal pores, and finally stores it inside the structure. During the friction process, friction heat will gather on the friction surface, and the surface temperature is in the process of continuous temperature rise...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08B22F3/11C22C29/14
CPCB22F3/11C22C29/005C22C29/14
Inventor 李克敏皇志富坚永鑫张磊申宇鹏曹臻
Owner 山东晶希瓷新材料科技有限公司