Effect of carbon excess and milling conditions on the synthesis of nanostructured WC by carbothermic reduction of scheelite (CaWO4)
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- 作者：Riccardo Polinia ; polini@uniroma2.it" class="auth_mail" title="E-mail the corresponding author ; Elena Palmieria ; GianCarlo Marchesellib
- 关键词：Carbothermic reduction ; Scheelite ; Powder milling ; WC powders ; X-ray diffraction ; Electron microscopy
- 刊名：International Journal of Refractory Metals and Hard Materials
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：54
- 期：Complete
- 页码：178-185
- 全文大小：1587 K
文摘
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The combined effect of different milling conditions and carbon excess has been studied.
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The reduction of scheelite occurs via a two-step reaction barely influenced by milling intensity.
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The yield of WC depends on the intensity of milling conditions.
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Sufficiently intense milling allows avoiding an excess of carbon to achieve high WC yields.