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Paper Titles
Mechanical Properties of Al2O3-TiN Nanocomposite Ceramic Tool Materials
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Processing and Characterization of an Al2O3/TiCN Micro-Nano-Composite Graded Ceramic Tool Material
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Processing and Characterization of an Al2O3/TiCN Micro-Nano-Composite Graded Ceramic Tool Material

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Abstract:

In this study, an Al2O3-based functionally graded ceramic tool material reinforced with TiCN micro-particles and nano-Al2O3 particles was fabricated by using hot-pressing technique. The experimental results showed that optimal mechanical properties were achieved for the composite with the addition of nano-Al2O3 particles increasing from 10vol.% in the surface to 20vol.% in the core, with the flexural strength, fracture toughness and Vicker’s hardness being 1073MPa, 5.99MPa.m1/2 and 21.78GPa, respectively. The microstructure and phase composition of the composites were characterized with SEM, TEM and XRD. It is believed that addition of nano-Al2O3 increasing from the surface to the core, which developed an nano-particles-rich tougher core and a hard Al2O3/TiCN-rich surface, improved the integrated mechanical properties of micro-nano-composite graded ceramic material.

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Periodical:

Key Engineering Materials (Volume 499)

Pages:

132-137

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.499.132

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Online since:

January 2012

Authors:

Z.J. Gao, Jun Zhao, Guang Ming Zheng

Keywords:

Mechanical Property, Micro-Nano-Composite Graded Ceramics, Microstructure, Strengthening Mechanisms, Toughening Mechanisms

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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