Preparation and characterization of Al2O3_TiC micro–nano-composite ceramic tool materials.pdf

Available online at CERAMICS INTERNATIONAL Ceramics International 39 (2013) 4253–4262 /locate/ceramint Preparation and characterization of Al O /TiC micro–nano-composite 2 3 ceramic tool materials Zengbin Yina,b, Chuanzhen Huanga,b,n, Bin Zoua,b, Hanlian Liua,b, Hongtao Zhua,b, Jun Wanga,b a Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061, PR China bKey Laboratory of High-efficiency and Clean Mechanical Manufacture, Shandong University, Ministry of Education, PR China Received 13 August 2012; received in revised form 6 October 2012; accepted 15 October 2012 Available online 16 November 2012 Abstract An Al O -based composite ceramic tool material reinforced with micro-scale and nano-scale TiC particles was fabricated by a hot- 2 3 pressing technology with cobalt additive in different sintering processes. The microstructure, indention cracks and phase composition of composites were characterized with scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The experimental results showed that Al O /TiC /TiC micro–nano-composite co