Synthesis of CrB₂ powders at 800 °C under ambient pressure

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• 作者：Zetan Liu ; Ya&rsquo ; nan Wei ; Xin Meng ; Tingting Wei ; Songlin Ran ; ^{Songlin.Ran@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：CrB2 ; Borothermal reduction ; Molten salt method
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：1628-1631
• 全文大小：713 K

文摘

CrB₂ powders were successfully synthesized by the borothermal reduction of Cr₂O₃ at 800–1000 °C under ambient pressure without B in excess. The presence of molten NaCl/KCl salts not only greatly decreased the synthesis temperature without introducing any impurities but also induced a small particle size. The CrB₂ powders synthesized at 900 °C had the largest specific surface area of 11.09 m²/g and the lowest equivalent average particle size of 104 nm, respectively.