High temperature self compensatiojn lubrication wear resistance material and its preparing method

A wear-resistant material and self-compensating technology, which is applied in the direction of engine lubrication, mechanical equipment, ceramic products, etc., can solve the problem that the high-temperature volatility of liquid medium cannot meet the requirements of extreme high-temperature work

Inactive Publication Date: 2005-03-02
WUHAN UNIV OF TECH
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Problems solved by technology

However, at present, the micropores in metal sintered body are irregular gap micropores, and the sintered body can only absorb lubricant (oil) through siphon effect; therefore, the

Method used

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  • High temperature self compensatiojn lubrication wear resistance material and its preparing method
  • High temperature self compensatiojn lubrication wear resistance material and its preparing method
  • High temperature self compensatiojn lubrication wear resistance material and its preparing method

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Embodiment Construction

[0022] Such as figure 1 , 2 , the wear-resistant material of the present invention shown in 3, it comprises matrix and the solid lubricant particle body that is compounded on the matrix, matrix is ​​alloy, pottery, rare earth element mixed sintered body with sweat gland type structure micropore, sweat gland type structure micropore It consists of internal micropores 2 and through micropores 1. The internal micropores 2 communicate with the surface of the substrate through the through micropores 1. The micropore diameter of the sintered sweat gland structure is 0.05-8 μm. The solid lubricant particles are compounded in the micropores of the sweat gland structure. The matrix contains alloy, titanium carbide (ceramic material) and yttrium oxide (rare earth element material), and the weight ratio of each component is: 40-60 parts of alloy, 25-40 parts of titanium carbide and 1-2 parts of yttrium oxide. The alloy is high speed steel or stainless steel. The total pore volume rati...

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Abstract

The high temperature self-compensating lubricating wear resistant material includes substrate and solid lubricating particle compounded to the substrate. The substrate is mixed alloy, ceramic and RE element sintered body with sweat gland type structural micropores. The sweat gland type structural micropore has diameter of 0.05-8 micron and consists of internal micropore and penetrating micropore to the surface of the substrate, and the solid lubricating particle is compounded into the sweat gland type structural micropore. The present invention ensures the formation of wear resistant hard phase in the substrate material, and the composite material has its lubricant inside the substrate driven by the friction heat to diffuse toward the friction surface via the sweat gland micropores to realize the self compensating lubrication of the wear resistant material at high temperature.

Description

technical field [0001] The invention relates to a self-lubricating wear-resistant material and a preparation method thereof, in particular to a self-compensating lubricating wear-resistant material used in a high-temperature environment and a preparation method thereof. Background technique [0002] The traditional design concept of high-temperature self-lubricating wear-resistant materials is to add solid lubricant as a mixed component to the wear-resistant materials to form self-lubricating composite materials. Due to the mutual restriction of the lubricating phase and the hard phase in the material; when adding lubricating components to improve the lubricity of the material, the lubricating phase reduces the mechanical properties of the material and the wear resistance of the hard phase; thus restricting the respective elements in the material Functional play. [0003] In addition, due to the porosity in the metal sintered body, the impregnation method is used to impregn...

Claims

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Application Information

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IPC IPC(8): B22F3/11B22F3/26C04B38/00C22C1/08F16N7/12
Inventor 刘佐民王砚军张一兵王二虎
Owner WUHAN UNIV OF TECH
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