Technical Performance of High Pressure and High Temperature Processed TiC Ceramic Tools

Guerold Sergueevitch Bobrovinitchii; Ana Lucia D. Skury; Sérgio Neves Monteiro; Márcia G. Azevedo

doi:10.4028/www.scientific.net/MSF.727-728.1048

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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Technical Performance of High Pressure and High...

Technical Performance of High Pressure and High Temperature Processed TiC Ceramic Tools

Abstract:

Non-oxide covalent ceramics such as TiC and TiN display hardness and thermal stability that favor their use as cermet insert for high speed turning operations. The objective of this work was to assess the properties of the TiC combined with W-Mo as binding matrix. The cermet sintering was carried out inside a toroidal anvil type of high pressure device up to 1.0 GPa of pressure and temperatures up to 1800°C. It was found that at 1400°C the Mo reacts with TiC forming Mo₂C while at 1800°C the reaction with W forms WC. Moreover, the cermets density reaches 98% of the theoretically calculated value with strength of 942 MPa and Rockwell A hardness of 94. Efficient turning parameters are reported for machining operation using these cermets as tools insert.

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Materials Science Forum (Volumes 727-728)

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1048-1052

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1048

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Online since:

August 2012

Authors:

Guerold Sergueevitch Bobrovinitchii, Ana Lucia D. Skury, Sérgio Neves Monteiro, Márcia G. Azevedo

Keywords:

Ceramic, Diamond Tool, Hardness

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