Ceramic-intermetallic compound composite material containing binder and preparation method thereof

Abstract

The invention relates to a ceramic-intermetallic compound composite material containing a binder and a preparation method for . The metal binder accounts for less than 20% of the total weight by weight percentage, and ceramic particles in situ are one kind of or two kinds of TiB2 and TiC. The weight percentage of the total weight of the ceramic particles in situ is less than 20%, and the weight percentage of the total weight of the TiB2 and TiC is less than 40%. The preparation method comprises the steps of: (1) mixing Cu, Ni, Fe, Al, Cr, B, C, Si and Ti powder as reactants according to a certain proportion and pressing into a blank; (2) heating the pressed blank in argon atmosphere by resistance wires for preheating, and then heating by the heat of the resistance until combustion synthetic reaction occurs; and (3) pressurizing after reaction to densify the blank, and form in situ ceramic reinforced intermetallic compound the composite material for containing the metal binder. The composite material has the advantages of excellent performance such as high intensity, high rigidity, and the like, simple preparation process, simple equipment, low energy consumption and easy popularization and application.

Description

technical field The invention relates to the field of composite materials, in particular to an in-situ ceramic reinforced intermetallic compound composite material added with a metal binder and a preparation method thereof. Background technique Refractory Ti 5 Si 3 It is a high-temperature intermetallic compound that has attracted much attention because of its good thermodynamic stability, good high-temperature strength and creep resistance, and excellent high-temperature oxidation resistance and corrosion resistance. However, hindering Ti 5 Si 3 The biggest problem in application lies in its extremely low room temperature brittleness and fracture toughness. The research of many scientific and technological workers has found that alloying and compounding are the solution to the problem of Ti 5 Si 3 An effective approach to brittle problems. At present, although there are many studies on effective alloying and compounding in order to solve the brittleness of materials,...

AI Technical Summary

Problems solved by technology

At present, although there are many studies on effective alloying and compounding to solve material brittleness, there are relatively few studies on in-situ ceramic-reinforced intermetallic compound composites using metal as a binder.

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