水基流延成型制备复合结构YAG透明陶瓷  

reparation of Composite YAG Transparent Ceramics by Aqueous Tape Casting Route

作　　者：巴学巍[1,2,3] 李江[1] 潘裕柏[1] 刘婧[1,4] 郭景坤[1] 

机构地区：[1]中国科学院透明光功能先进无机材料重点实验室,中国科学院上海硅酸盐研究所,上海200050 [2]中国科学院研究生院,北京100039 [3]齐齐哈尔大学,黑龙江齐齐哈尔161006 [4]江苏大学,江苏镇江212013

出　　处：《稀有金属材料与工程》2013年第S1期234-237,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(51002172);上海市基础研究重点项目(10JC1416000)

摘　　要：以商品氧化钇和氧化铝粉体为原料,采用水基流延成型技术结合真空烧结工艺制备了复合结构YAG透明陶瓷。使用流变曲线表征了料浆的性能,用扫描电镜观察流延膜和坯体的微观形貌,用电子探针分析陶瓷的表面特征,用分光光度计测试陶瓷的光透过率曲线。实验结果表明,最佳的分散剂是聚丙烯酸,其最佳用量是1.0%(质量分数,下同),粘结剂聚乙烯醇-124的合理用量是10%,塑化剂聚乙二醇-400的合理用量是10%～12%。流延膜和坯体结构致密,YAG复合结构陶瓷在可见光和近红外光波段的直线光透过率达到80%。YAG composite transparent ceramics were prepared by the aqueous tape casting method and vacuum sintering. Al2O3 and Y2O3 were used as the raw materials. Rheological curves were used to test the relationship between viscosity and the organic reagents. SEM was used to observe the microstructure characteristics of the tapes and green bodies. EPMA was employed to analyze the surface morphology of YAG composite ceramics. Spectrophotometer was used to test the in-line transmittance of the samples. The results indicate that PAA is the best dispersant and the best dosage of PAA is 1.0wt%. The reasonable dosage of PVA-124 is 10wt%. PEG-400 should be controlled at 10～12wt%. The microstructure of the as-sintered YAG composite ceramics are compacted closely by the YAG grains with the mean grain size of 15 μm. There are only few pores at the grain boundaries. The in-line transmittance at visible to infrared wavelength is about 80 %.

关 键 词：YAG 透明陶瓷 水基流延成型 复合结构 

分 类 号：TQ174.1[化学工程—陶瓷工业]