首页|Development of Whisker Toughening Ceramic Cutting Tool Composite by in Situ Synthesis Technology

Development of Whisker Toughening Ceramic Cutting Tool Composite by in Situ Synthesis Technology

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  • Trans Tech Publications Ltd
While whisker toughening ceramic cutting tool composites have excellent mechanical properties at either room or high temperature, the development of them is often limited by some difficulties in the fabrication and application. Here a TiC whisker toughening Al_2O_3 ceramic cutting tool composite is developed by in situ synthesis technology. Experimental results show the flexure strength, fracture toughness and Vickers hardness of the composite can achieve to 855.7MPa, 7.63 MPa· m~(1/2) and 19.5GPa, respectively. Being different to that of conventional whisker toughening ceramic composites, the toughness of the composite is dominated by the chemical interface bonding between TiC and Al_2O_3, which increases with increasing sintering temperature, and the sliding resistance is suggested to be due to the physical absorption and mechanical meshing between the two debonded surfaces.

TiC whiskerin situ synthesisAl_2O_3ceramic cutting tool compositechemical bonding

Bingqiang Liu、Chuanzhen Huang、Hanlian Liu、Xuewen Chong

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Center for Advanced Ceramic Cutting Tool & Application Technology (CaCCTAT), Weifang University, China, 261061 Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan, China, 250061

Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan, China, 250061

2010

10.4028/www.scientific.net/KEM.431-432.201

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.431/432
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