Fabrication of Ti2AlN ceramics with orientation growth behavior by the microwave sintering method》.pdf

Available online at ScienceDirect Journal of the European Ceramic Society 35 (2015) 1385–1391 Fabrication of Ti AlN ceramics with orientation growth behavior by the 2 microwave sintering method Wulong Liu a,b , Changjun Qiu a,∗, Jie Zhou b , Zhihui Ding b , Xiaobing Zhou b , Shiyu Du b , Young-Hwan Han c , Qing Huang b,∗ a School of Mechanical Engineering, University of South China, Hengyang 421001, People’s Republic of China b Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, People’s Republic of China c School of Materials Science and Engineering, Yeungnam University, Gyeongsan, Republic of Korea Received 28 July 2014; received in revised form 3 November 2014; accepted 23 November 2014 Abstract Porous Ti AlN ceramic, which was measured to be 3.23 g/cm3 about 74.9% of its theoretical value, was successfully synthesized and simultaneously 2 consolidated from starting raw materials of Ti, Al, and TiN powders with a near-stoichiometric molar ratio of 1:1.03:1 by a microwave sintering method ◦ ◦ at 1200 C for 30 min in an argon atmosphere. When sintered at 1200 C for 1h, the Ti AlN grain showed a preferred growth behavior along 2 the c-axis in the final ceramic, as shown by th