Preparation and characteristics of W–1 wt.% TiC alloy via a novel chemical method and spark plasma sintering》.pdfVIP

Powder Technology 273 (2015) 8–12 Contents lists available at ScienceDirect Powder Technology journal homepage: /locate/powtec Preparation and characteristics of W–1 wt.% TiC alloy via a novel chemical method and spark plasma sintering Lai-Ma Luo a,c,⁎, Xiao-Yue Tan a, Hong-Yu Chen a, Guang-Nan Luo b, Xiao-Yong Zhu a,c, Ji-Gui Cheng a,c, Yu-Cheng Wu a,c,⁎ a School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China b Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China c National–Local Joint Engineering Research Centre of Nonferrous Metals and Processing Technology, Hefei 230009, China a r t i c l e i n f o a b s t r a c t Article history: A chemical method was used to synthesize W/TiC composite powder. The obtained powder can achieve near Received 14 September 2014 full densification (relative density of 99.0%) after sintering by spark plasma technology at 1800 °C for 3 min. Received in revised form 22 November 2014 Field-emission scanning electron microscopy and transmission electron micrographs showed that doped TiC Accepted 16 December 2014 nano-particles existed at the grain interior and grain boundary. Transgranular and intergranular fractures can Available online 20 December 2014 be observed on the surface of the sintered sample. The thermal conductivity of the sintered specimen was 122.89 W/mK at room temperature and has high thermal stabili