期刊
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
卷 47, 期 -, 页码 108-112出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrmhm.2014.06.024
关键词
WC; Platelets; Carbothermal reduction; High-energy ball milling; Faceting
资金
- National Research Foundation of Korea (NRF) - Korea government (MEST) [2011-0017168]
- POSCO, fund through Center for Iron and Steel Research at Seoul National University [D-BB05-09]
- National Research Foundation of Korea [2011-0017168] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This work investigates the factors affecting the morphology of WC powder. WO3-C mixtures were prepared by high-energy ball milling and nano-sized WC powder was obtained in the form of platelets with a high aspect ratio (5-20) carbothermally. We observed that the WC powder contains excess (101) plane along with high level of strain during initial heating stage. Further, the temperature for the platelet formation coincides with that for the reduction of (101) peak intensity in the XRD pattern. From this study we found that the presence of excess (101) plane and high strain promoted the formation of platelet WC effectively. 2014 Elsevier Ltd. All rights reserved.
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