NiFe_2O_4惰性阳极的制备及其电解腐蚀机理分析  

Preparation and Electrolysis Corrosion Mechanism Analysis of NiFe_2O_4 Inert Anode

作　　者：张健飞 朱佳 伍华 朱春城 

机构地区：[1]Harbin Normal University

出　　处：《哈尔滨师范大学自然科学学报》2011年第1期65-68,共4页Natural Science Journal of Harbin Normal University

摘　　要：以Fe2O3和NiO为主要原料,添加5%的Cu,采用粉末冶金方法成功地制备出NiFe2O4惰性阳极.研究表明,制备NiFe2O4陶瓷粉体的最佳工艺条件是:1100～1200℃,6 h;采用冷等静压成型-真空烧结工艺制备了Cu-NiFe2 O4金属陶瓷惰性阳极,结果表明,最佳烧结温度为1300℃,8 h.然后在960℃高温下进行铝电解实验,根据电解后阳极的XRD探讨了惰性阳极在冰晶石熔盐中的化学腐蚀机理.Taking Fe2O3 and NiO as main raw materials with Cu of 5% , NiFe2O4 inert anode was successfully prepared by powder metallurgical method. The results show that the best process to synthesize NiFe2O4 spinel is at 1100 - 1200 ℃ for 6 hours. Cold isostatic pressing and subsequently vacuum sintering method was adopted to synthesize Cu -NiFe2O4 inert anodes. The results indicate that the best process to synthesize Cu - NiFe204 is at 1300℃ for 8h. Then , aluminum electrolytic experiment was made at 960 ℃. According to X -ray diffraction of electrolyzed anode, its chemical corrosion mechanism in cryolite melt is discussed.

关 键 词：惰性阳极 镍铁尖晶石 化学腐蚀 

分 类 号：TQ138.11[化学工程—无机化工]