Electrical conductivity and molten salt corrosion behavior of nickel ferrite ceramics
Nickel ferrite ceramics was sintered in air atmosphere and nitrogen atmosphere respectively and their electrolysis corrosion in aluminum electrolysis at 960 was examined. ℃ X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis were used to analyse the phase composition and microstructure. The phase composition, electrical conductivity and molten salt corrosion behavior were investigated regarding different sintering atmospheres. The electrical conductivity and molten salt corrosion resistance of the samples sintered in nitrogen increased drastically compared to those sintered in air, attributing to the effects of the lower oxygen partial pressure and the formation of dense protective layer on the surface during electrolysis. The conductive mechanism and molten salt corrosion mechanisms were also discussed.
nickel ferrite sintering atmosphere electrical conductivity electrolysis corrosion
Baogang Liu Kechao Zhou Zhiyou Li Hao Wang
State Key Laboratory of Powder Metallurgy, Central South University,Changsha, Hunan 410083
国内会议
长沙
英文
1-8
2010-06-19（万方平台首次上网日期，不代表论文的发表时间）