涂覆草酸钇薄膜改善氮化铝粉耐水性及其机理  

Improvement on the Hydrolysis Resistance and Its Mechanism for Aluminum Nitride Powder Coated with Yttrium Oxalate Film

作　　者：单慧波[1] 李红旭 张宗涛 

机构地区：[1]华东理工大学基础教育学院

出　　处：《华东理工大学学报（自然科学版）》1998年第4期458-461,共4页Journal of East China University of Science and Technology

摘　　要：研究了表面涂覆草酸钇薄膜对氮化铝（ＡｌＮ）粉耐水性的影响。结果显示：涂膜后ＡｌＮ粉在１００℃沸水中回流４５ｍｉｎ不与水反应，温度降至７８℃时可耐水３ｈ以上；耐水时间随涂覆量增加而增加，随温度升高而下降。水分子通过薄膜的扩散过程是影响ＡｌＮ耐水性的决定因素。用Ｘ光电子能谱（ＸＰＳ）和红外光谱测定了表面草酸钇与ＡｌＮ界面形成的化学键。The effect of yttrium oxalate film on the hydrolysis resistance of aluminum nitride powder was studied. The coated film improved the powder's ability of water corrosion, and the coated powder not react with water at 100℃ for 45 minutes and 78℃ for over 3 hours. The resistance time to hydrolysis was increased with an increase of the film content, but decreased with temperature, which was governed by water diffusion through the film. XPS and IR showed that chemical bonds were formed at the interface of AlN/Y2(C2O4)3. 

关 键 词：氮化铝 薄膜 耐水性 草酸钇 陶瓷 

分 类 号：TQ174.758[化学工程—陶瓷工业]