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タイトル: | Phase Relationship and Activities of Components in CaO–SiO₂–Cr₂O₃ Ternary System at 1573 K |
著者: | Iwahashi, Kodai Hashimoto, Shuji Yamauchi, Ryohei Saito, Keijiro Hasegawa, Masakatsu |
著者名の別形: | 山内, 遼平 齋藤, 啓次郎 長谷川, 将克 |
キーワード: | phase diagram activity chromium oxide special steel |
発行日: | May-2021 |
出版者: | Iron and Steel Institute of Japan |
誌名: | ISIJ International |
巻: | 61 |
号: | 5 |
開始ページ: | 1404 |
終了ページ: | 1411 |
抄録: | The knowledge of Cr₂O₃ activity in slag is necessary to decarburize chromium-containing special steel while minimizing the oxidation loss of chromium. In the present study, firstly, the phase relationship in the CaO–SiO₂–Cr₂O₃ system was determined at 1573 K. Subsequently, the Cr₂O₃ activities in two- and threephase coexisting slags at 1573 K were measured by equilibrating molten copper with oxide phases under a stream of Ar + H₂ + CO₂ gas mixtures, and the Gibbs energy changes of the formations of CaCr₂O₄ and Ca₃Cr₂Si₃O₁₂ were derived. It was found that the present results were compatible with the phase diagram and the literature data reported at higher temperature than 1573 K. |
著作権等: | © 2021 The Iron and Steel Institute of Japan. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license. |
URI: | http://hdl.handle.net/2433/265315 |
DOI(出版社版): | 10.2355/isijinternational.ISIJINT-2020-752 |
出現コレクション: | 学術雑誌掲載論文等 |
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