Aluminum Electrolysis Tests for 30 h with Inert Anode Composed of Stainless Steel Substrate and WC Coating

作者：Wang Yudong^*; Dai Yongnian; Zhou Xiaokui; Zhang Zihua

来源：Rare Metal Materials and Engineering, 2011, 40: 313-317.

• inert anode
• aluminum electrolysis
• WC-M coating
• 316L stainless steel
• 2Cr13 stainless steel

(WC-M) coating inert anode was prepared on the substrates of stainless steel by plasma thermal coating processing. The (WC-M) coating was composed of Ni-Cr alloy and WC powder. The WC-M with other contrasted materials were soaked in 1000 degrees C electrolyte, and were oxidated in air at 1000 degrees C for 72 h. The results show the anticorrosion and anti-oxidation of the WC-M are only weaker than that of platinum. The inert anode was tested with tradition aluminum electrolysis at 960 degrees C for 30 h. The results proved that WC-M/316L coating anode has excellent performances with respect to electronic conductivity, anti-oxidation and anti-corrosion at high temperature, thermal shock resistance as well as mechanical processing. The impurity contents of the deposited aluminum are in the range of the National Specification A199.00(GB/T 1196-2002). The tested and extrapolated corrosion rate of WC-M/316L coating anode is about 45 mm/a.

• 出版日期2011-7
• 单位昆明理工大学