Electrochemical Deposition of Zirconium Diboride Coatings in NaCl-KCl-K2ZrF6-KBF4 Melts
Electrochemical Deposition of Zirconium Diboride Coatings in NaCl-KCl-K2ZrF6-KBF4 Melts
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NaCl-KCl-K2ZrF6-KBF4 熔体中电化学沉积二硼化锆涂层
DOI:
10.1149/2.1241610jes
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发表时间:
2016
影响因子:
3.9
通讯作者:
Zeng Chao Liu
中科院分区:
文献类型:
--
作者:
Wang Qian;Wang Yan Li;Liu Hui Jun;Zeng Chao Liu
Zirconium diboride is one of the most promising ultra high temperature ceramics, which are urgently required in the development of hypersonic flight, atmospheric re-entry and rocket propulsion. In this work, the zirconium diboride coating is successfully obtained on different substrates by electrochemical deposition from a NaCl-KCl-K 2 ZrF 6-KBF 4 melt. The effects of current density, operating temperature, electrodeposition time and substrate materials on the microstructure and phase composition of the coating are also investigated by SEM, EDX, and XRD. Besides, the electrochemical reduction of zirconium, boron and zirconium diboride has been investigated by cyclic voltammetry and chronopotentiometry. The results show that various morphological and structure of ZrB 2 coatings can be synthesized on stainless steel, graphite and carbon fiber reinforced carbon composite (C/C composite) substrates and the synthesis of ZrB 2 mainly follow two subsequent electrochemical reactions and a chemical reaction.
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通讯作者:
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