Effect of addition of TaC on properties of Ti(3)SiC(2) ceramics

The material of 20%(mass fraction, same below)TaC/Ti(3)SiC(2) was prepared by reactive hot pressing method. The phase constituent, mechanical properties and oxidation resistance were investigated. The results showed that: (1) The densification, flexural strength and fracture toughness of 20%TaC/Ti(3...

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Bibliographic Details
Published in:Hang kong cai liao xue bao 2013-02, Vol.33 (1), p.56-60
Main Authors: Yang, Yi-Nuo, Yin, Hong-Feng, Liu, Bai-Kuan, Yuan, Hu-Die, Jia, Huan
Format: Article
Language:Chinese
Subjects:
Ceramics
Densification
Eutectoids
Flexural strength
Hot pressing
Oxidation resistance
Silicon carbide
Titanium dioxide
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Summary:The material of 20%(mass fraction, same below)TaC/Ti(3)SiC(2) was prepared by reactive hot pressing method. The phase constituent, mechanical properties and oxidation resistance were investigated. The results showed that: (1) The densification, flexural strength and fracture toughness of 20%TaC/Ti(3)SiC(2) increase with the increase of hot pressing temperature; (2) The oxidation resistance of 20% TaC/Ti(3)SiC(2) is much higher than that of monolithic Ti(3)SiC(2)and 20% SiC/Ti(3)SiC(2) composites; (3) The oxidized layers of TaC/Ti(3)SiC(2) are composed of two layers. The outer layer is TiO(2). And the inner layer is the mixture of TiO(2), SiO(2) and the eutectoid of TiO(2) and Ta(2)O(5).
ISSN:1005-5053
DOI:10.3969/j.issn.1005-5053.2013.1.010