A kind of m50-sn-ag-cu microporous channel self-lubricating composite material and its preparation method

Abstract

The invention relates to an M50‑Sn‑Ag‑Cu microporous flow channel self-lubricating composite material, which mainly uses the aviation spindle bearing material M50 steel as the matrix material, uses Sn‑Ag‑Cu as the lubricating phase, and the microporous flow channel is composed of a lubricating phase Arrangement is formed, and the microporous flow channel structure is used as the lubricating phase to realize the structural form of lubrication. M50‑Sn‑Ag‑Cu microporous flow channel self-lubricating composite material is prepared by 3D printing from Sn‑Ag‑Cu spherical powder and M50 spherical powder. The M50-Sn-Ag-Cu microporous flow channel self-lubricating composite material of the present invention has a lower friction coefficient and wear rate, can effectively improve the tribological properties of M50 bearing steel, and the preparation method is simple and convenient, and the process of the preparation process is The parameters are easy to control, and the lubrication behavior can be controlled to a certain extent, and complex mechanical parts can be manufactured, which is of great significance to the industrial application of self-lubricating materials.

Description

technical field [0001] The invention relates to an M50-Sn-Ag-Cu microporous channel self-lubricating composite material and a preparation method thereof, belonging to the field of solid self-lubricating composite materials. Background technique [0002] M50 high-temperature bearing steel has many excellent characteristics such as high-temperature dimensional stability, high-temperature hardness, high-temperature contact fatigue performance, etc., and is the main steel used for main shaft bearings of aero-engines in various countries around the world. With the rapid development of the modern aviation industry, there is an urgent need for heavy-duty, high-speed, high-reliability aero-engines. Aeroengine main shaft bearing is one of the key components of the entire aeroengine, which is directly related to the performance of the aeroengine. It is well known that friction and wear under high temperature conditions are one of the main factors that reduce the service life of aeroe...

AI Technical Summary

Problems solved by technology

This preparation process has the following two deficiencies: First, there is a large heat gradient distribution during the preparation process, which affects the uniformity of the material structure, and the mechanical mixing of the lubricant and the matrix material will also reduce the lubricity on the basis of improving the lubricating performance. The mechanical properties of the material; the second is that special molds are required for material forming, so that the research on metal-based self-lubricating materials is still at the stage of experimental analysis of small-block materials, and it is impossible to realize the application of self-lubricating composite materials in industrial complex parts

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