Interaction of sintered aluminum nitride with the KF-AlF3 melt at 700-00°C

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• 作者：A. Yu. Chuikin (1)
  Yu. P. Zaikov (1)
  A. R. Beketov (2)
  
• 关键词：aluminum nitride ; potassium cryolite ; low ; temperature aluminum electrolysis ; continuous weighing method
• 刊名：Russian Journal of Non-Ferrous Metals
• 出版年：2014
• 出版时间：September 2014
• 年：2014
• 卷：55
• 期：5
• 页码：419-423
• 全文大小：704 KB
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  16. Chuikin, A.Yu., Beketov, D.A., Malkov, V.B. et al., in / Vestn. Ural Gos. Tekh. Univ.-Ural Politekh. Inst., Ser. Khim, Yekaterinburg: Ural Gos. Tekh. Univ.-Ural Politekh. Inst. (UGTU-UPI), 2005, pp. 82-6.
  
• 作者单位：A. Yu. Chuikin (1)
  Yu. P. Zaikov (1)
  A. R. Beketov (2)
  
  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, ul. Akademicheskaya 20, Yekaterinburg, 620990, Russia
  2. Ural Federal University, ul. Mira 19, Yekaterinburg, 620002, Russia
  
• ISSN：1934-970X

文摘

Interaction kinetics of the aluminum nitride-based sintered composite material with the potassium cryolite melt with the cryolite ratio KO = 1.3 at 700-00°C is investigated by the continuous weighing method. It is established that the composite is almost unaffected by the melt at t = 700°C. The corrosion rate increases as the temperature increases. The material interacts with the molten salt through its oxidation stage by oxygen dissolved in the melt. This is also accompanied by the dissolution of oxygen-containing impurities that are initially present in the material. No interaction of sintered aluminum nitride with the melt under study was observed in the absence of the oxidant and with the concentration of alumina dissolved in cryolite close to saturation.