CORROSION OFMG-PSZ IN HF SOLUTION AND ITS EFFECT ON SYNTHESIS OF AUXILIARY ELECTRODE

摘要：

Auxiliary electrode for high temperature sulfur sensors was synthesized at the surface of magnesia partially stabilized zirconia (Mg-PSZ) using H2S as starting materials. Mg-PSZ was first corroded in 40% HF solution under ultrasonic conditions at room temperature for different time. The microstructure and phase composition of corrosion specimens and synthesis specimens were investigated using scanning electron microscopy (SEM) and Xray diffraction (XRD). The results show that the phase transformation from tetragonal to monoclinic of zirconia takes place after the surface is exposed to HF solution. As corrosion time increases the peaks of tetragonal phases are decreased and corrosion attack is more severe. HF treatment of Mg-PSZ can promote the formation of auxiliary electrode.

关键词： Corrosion Auziliary electrode Microstructure Phase transformation Grain boundaries

作者: TAO LIU LIN LI JINGKUN YU

作者单位: School of Materials & Metallurgy, Northeastern University Shenyang, 110004, China

会议类型: 国际会议

会议名称: The 12th Asian Conference on Solid State Ionics(第十二届亚洲固态离子学会议暨第十五届中国固态离子学会议)

会议地点: 武汉

会议语种:英文

页码: 581-587

在线出版日期: 2010-05-02（万方平台首次上网日期，不代表论文的发表时间）