Method for preparing titanium-based composite material by sintering pre-dispersed graphite composite titanium hydride

A technology of titanium-based composite materials and titanium hydride, which is applied in the field of powder metallurgy forming TiC-reinforced titanium-based composite materials, can solve the problems of low tensile plasticity, high cost, and cost reduction, and achieve high tensile strength, improved performance, and reduced The effect of production costs
CN112281009AActive Publication Date: 2021-01-29SOUTH CHINA UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2021-01-29

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Abstract

The invention belongs to the technical field of nonferrous metal processing, and discloses a method for preparing a titanium-based composite material by sintering pre-dispersed graphite composite titanium hydride and the prepared composite material. Specifically, titanium hydride powder and graphite powder are used as raw materials to form a TiC reinforced titanium-based composite material by powder metallurgy. The method comprises the following steps that firstly, the graphite powder is pre-dispersed by using polyvinylpyrrolidone; and then, the graphite powder is attached on the surface of titanium hydride for sintering formation, so that such problems as powder agglomeration and weak alloy performance caused by direct physical mixing of the titanium hydride and the graphite powder are solved. The tensile strength of the obtained TiC reinforced titanium-based composite material can be 535 MPa; the elongation after fracture can be 10%; the optimized wear volume is reduced by 15% compared with pure titanium; compared with a titanium-based composite material prepared by using titanium hydride as a raw material reported in the literature, the breakthrough in greatly improving the tensile plasticity is realized; and the method can be applied to the preparation of high-strength parts or wear-resistant structural parts in the fields of aerospace, armored cars, weapons, ships and automobiles.
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Description

technical field

[0001] The invention belongs to the technical field of non-ferrous metal processing, and in particular relates to a method for preparing a titanium-based composite material by sintering pre-dispersed graphite composite titanium hydride and the prepared composite material, specifically using titanium hydride powder and graphite powder as raw materials and adopting powder metallurgy forming TiC reinforced titanium matrix composites. Background technique

[0002] As a non-ferrous metal material with abundant reserves, titanium has high mechanical strength, low density, excellent biocompatibility and excellent corrosion resistance. It is widely used in aerospace industry, military weapons, energy, chemical industry, shipbuilding and other fields. In order to meet the high requirements of modern industry for titanium, it must reduce production costs while continuously improving its mechanical properties and service temperature.

[0003] The preparation of titaniu...

Claims

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