Magnetization of TiC-10TiN-xMC-yNi (MC = Mo_2C, WC) cermets

摘要

Magnetization of TiC-10TiN-xMC-yNi (MC = Mo2C, WC, x = 0, 2,4,6, 8mol%, and y = 20, 40mol%) cermets was investigated. Room-temperature (RT) saturation magnetization M-s. of Mo2C-containing cermets decreased non-linearly with increasing x, and it tended to zero at x = 8 for y = 20 and x >= 6 for y = 40. At x = 8, Curie temperature T-c of Mo2C-containing cermets was about 50 K for y = 20 and 116 K for y = 40, respectively. RTMs. of WC-containing cermets initially decreased, then increased and decreased again with increasing x, and it had the minimum at x = 4, which was about 6.12 emu/g for y = 20 and 10.16 emu/g for y = 40, respectively. At the same x and y, Mo2C-containing cermets had lower RTMs. than WC-containing cermets. The strong suppression effect of Mo2C addition on magnetization of TiC-TiN-Ni cermets, in comparison with WC addition, was mainly attributed to high solubility of Mo2C in Ni-based binder phase of cermets. (C) 2016 Elsevier Ltd. All rights reserved.