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A kind of cucrzr/wc composite material, preparation method and application thereof

A composite material and particle size technology, which is applied in the field of composite materials, can solve the problems of CuCrZr alloy with large grain size, low structure density, and poor electrical conductivity, so as to inhibit grain growth, refine powder particle size, and improve The effect of hardness and conductivity

Active Publication Date: 2021-11-16
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the purpose of one or more embodiments of this specification is to propose a CuCrZr / WC composite material, a preparation method and its application, so as to solve the problems of large grain size, large grain size, and Problems with low tissue density, poor electrical conductivity, and low strength

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  • A kind of cucrzr/wc composite material, preparation method and application thereof
  • A kind of cucrzr/wc composite material, preparation method and application thereof
  • A kind of cucrzr/wc composite material, preparation method and application thereof

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preparation example Construction

[0042] As an optional embodiment, the preparation method specifically includes the following steps:

[0043] S1. Powder mixing: mix Cu powder, Cr powder, Zr powder, and WC powder according to the mass percentage of Cu powder 93%-95%, Cr powder 3%-4%, and Zr powder 2-3%. The mass ratio is 10:1~30:1. Put the stainless steel grinding balls together with Cu powder, Cr powder, Zr powder and WC powder into the ball mill pot and tighten the seal;

[0044] S2, vacuuming: the ball mill tank is vacuumed and filled with inert gas;

[0045] S3. Low-energy ball mill: Mix powder for 4-8 hours at a speed of 180-200r / min;

[0046] S4. High-energy ball mill: Mix powder for 60h-80h at a speed of 300-340r / min;

[0047] S5. Passivation: Open the lid of the ball mill tank in an inert atmosphere for passivation, and the passivation time is not less than 24 hours;

[0048] S6. Sieving and separating: in an inert atmosphere, sieving and separating the balls and the powder to obtain CuCrZr / WC compo...

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Abstract

One or more embodiments of this specification provide a CuCrZr / WC composite material, a preparation method and its application. WC powder is added when preparing alloyed powder. The sintering speed can effectively refine the powder particle size; and WC powder, as a dispersion strengthening material, can effectively hinder the grain boundary slip during spark plasma sintering, which can inhibit the grain growth during sintering and improve the sintering material. Hardness, improve the conductivity of the sintered material.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of composite materials, in particular to a CuCrZr / WC composite material, its preparation method and its application. Background technique [0002] Copper is often used as an electrode material for resistance welding. The main function of the electrode is to conduct welding current, apply pressure to the welded joint, and conduct heat away from the workpiece. Pure copper is an ideal material for high conductivity, but the mechanical strength of pure copper cannot meet the electrode force applied in resistance welding. Therefore, copper alloys are often used instead of copper as electrode materials. CuCrZr alloy is a kind of high-strength and high-conductivity alloy that has developed rapidly in recent years. CuCrZr alloy has good castability and machinability, high electrical conductivity, and its strength, hardness, wear resistance and high temperature performance are better. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/05B22F3/105B22F9/04
CPCB22F3/105B22F9/04B22F2009/043C22C1/05C22C9/00
Inventor 罗震杨越郭璟李洋郑博方王帅敖三三
Owner TIANJIN UNIV