【作者】 陶为华； 马桂林；

【Author】 TAG Weihua MA Guilin(1. College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006 ,China; 2. Department of Chemistry, Yancheng Teachers College, Yancheng 224002, China)

【机构】 盐城师范学院化学系； 苏州大学化学化工学院；

【摘要】 <正> 稳定化ZrO2是重要的高温氧离子导电陶瓷材料,因其可做为高温钢液、汽车尾气的测氧仪,温度传感器,新型绿色电源.固体氧化物燃料电池(SOFC)等能源、电化学装置的固体电解质,而具有极其重要的应用价值和广泛的应用前景。合成纯度高、化学组成均匀、粒径小、烧结性能良好的优质复合粉体是稳定化ZrO2陶瓷制备及其应用的基础。更多还原

【Abstract】 (ZrO2)0.92(Dy2O3)0.08 nanocrystallites with a cubic phase were hydrothermally prepared in basic media by co-precipitate, precursor, from the solutions of ZrOCl2·H2O and Dy2O3 in concentrated hydrochloric acid. It is discovered that the cubic nanocrystalline size is obviously affected by pH value. The higher the pH value of reaction medium, the larger the nanocrystalline size. Green compacts made with the nanocrystallites prepared hydrothermally can be sintered to above 97% of theoretical density at 1400℃, which was 150℃ lower than that used by traditional high temperature solid state reaction. The results show that the conduction in these sinters are almost pure oxide-ionic in oxygen atmosphere at 600 - 1000℃, and the sinters show good performance of electrochemical oxygen permeation above 900 ℃.更多还原