Magnetic and mechanical properties of TiC–xTiN–15MC–yNi (MC = Mo2C, WC) cermets
| Autor: | Qingqing Yang, Shengtao Li, Shengqing Wang, Weihao Xiong, Qiao Mao, Man Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
020502 materials Mechanical Engineering Metals and Alloys 02 engineering and technology Cermet 021001 nanoscience & nanotechnology 0205 materials engineering Flexural strength Ferromagnetism Mechanics of Materials Phase (matter) visual_art Materials Chemistry visual_art.visual_art_medium Curie temperature Ceramic Composite material 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 765:1119-1126 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2018.06.257 |
| Popis: | The present work investigated magnetic and mechanical properties of TiC–xTiN–15MC–yNi (wt.%, MC = Mo2C, WC, x = 0, 3, 6, 9, 12, 15, and y = 20, 40) cermets. Room-temperature (RT) saturation magnetization Ms of Mo2C-containing and WC-containing cermets decreased with increasing x, and that of Mo2C-containing cermets was lower at the same x and y. Ferromagnetism disappeared at RT for Mo2C-containing cermets regardless of x and y and for WC-containing cermets at x = 15 for y = 20 and x ≥ 12 for y = 40, mainly due to high total content of non-magnetic Mo (or W) and Ti in binder phase. At x = 15, Curie temperature Tc of Mo2C-containing cermets decreased to about 97 K for y = 20 and 16 K for y = 40. For Mo2C-containing cermets, transverse rupture strength (TRS) and hardness reached the maximum at x = 6 for y = 20, and they increased with increasing x for y = 40. For WC-containing cermets, TRS reached the maximum at x = 6 whereas hardness decreased slowly with increasing x for y = 20, and TRS and hardness reached the maximum at x = 12 and 6 for y = 40, respectively. TRS and hardness of Mo2C-containing cermets were higher than those of WC-containing cermets at the same x and y, except x = 0, 15 for y = 20, mainly due to stronger ceramic grain refinement strengthening effect and stronger substitutional solid-solution strengthening effect of binder phase. |
| Databáze: | OpenAIRE |
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