Self-lubricating aluminum-based composite material and method for preparing same

Abstract

The invention provides a self lubrication aluminum based composite material and a preparation method thereof, relating to an aluminum based composite material and a preparation method thereof. The invention solves the problems of high requirement on equipment, high cost, poor material performance and difficult second shaping and mechanical processing of materials in the synthesis of the prior self lubrication aluminum based composite material. The self lubrication aluminum based composite material is prepared from titanium diboride reinforced particles, aluminum particles or aluminum alloy particles, boron nitride particles and matrix aluminum alloy. The preparation method comprises the following steps: 1. raw materials are weighted according to the volume ratio; 2. the materials except for aluminum alloy are subjected to mixing and preliminary shaping to obtain the prefabricated part, and the prefabricated part is put in a mould and heated; 3. the aluminum alloy is heated until the aluminum alloy is melted; 4. the melted aluminum alloy is cast in the mould for pressure infiltration; and 5. the composite material of the invention is obtained after cooling and demoulding. The self lubrication aluminum based composite material of the invention has the advantages of good strength and elastic modulus, low frictional coefficient, high corrosion resistance, good plasticity and the realization of thermo forming. The preparation method of the invention has the advantages of simple method, easy operation and easy process control.

Description

technical field [0001] The invention relates to an aluminum-based composite material and a preparation method thereof. Background technique [0002] Self-lubricating materials are divided into three categories: polymer base, ceramic base and metal base. Only metal base materials are suitable for high-precision sliding parts. Metal-based self-lubricating materials mainly include solid lubricant inlaid bearing materials, aluminum-silicon and gold-graphite self-lubricating composite materials, iron-graphite oil-containing self-lubricating composite materials, silver-based self-lubricating composite materials for space, nickel alloy-based self-lubricating materials , Bronze-based self-lubricating composite materials, etc. [0003] At present, the method of preparing self-lubricating materials generally has high requirements for equipment, high cost, and poor material properties caused by the residue of reactants, such as low strength, poor mechanical properties, large loss of p...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a self-lubricating aluminum-based composite material in order to solve the problems of high requirements on equipment and environment, high cost, poor material performance and difficult secondary molding and mechanical processing of the material in the synthesis. Lubricant aluminum matrix composite material and preparation method thereof