Directly determining the polarity of WC grains in WC-12 wt%Co alloy by ABF-STEM
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- 作者：Yoshimitsu Hayashi ; Tomoharu Tokunaga ; Katsuhiro Sasaki ; Takahisa Yamamoto
- 关键词：Cemented carbide ; ABF-STEM ; HAADF-STEM ; Interface ; Grain growth
- 刊名：International Journal of Refractory Metals and Hard Materials
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：62
- 期：part_PA
- 页码：9-13
- 全文大小：786 K
文摘
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W and C atomic column positions in WC grains were directly visualized by ABF-STEM in spite of large atomic number difference of W and C atoms.
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The relation between the determined atomic column positions (a polarity of WC lattice) and characteristic truncated triangular prism shape of WC grains was confirmed.
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Atomic step structure of WC/Co interfaces were visualized by HAADF-STEM