模板浸渍法制备Al2O3-ZrO2-Y2O3复合陶瓷纤维及其烧结工艺  

Preparation of Al_2O_3-ZrO_2-Y_2O_3 composite ceramic fibers by template immersion method and sintering process

作　　者：高俊国[1] 刘雪姣[1] 马怀超[1] 张海涛[1] 何业东[1] 

机构地区：[1]北京科技大学,北京市腐蚀、磨蚀与表面技术重点实验室,北京100083

出　　处：《材料热处理学报》2011年第3期1-4,9,共5页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金面上项目(50771021);北京科技大学本科生创新项目(09030260)

摘　　要：以蚕丝为模板,Al、Zr、Y的硝酸盐乙醇溶液为浸渍液,采用模板浸渍法制备了Al2O3-ZrO2-Y2O3复合陶瓷纤维。采用FE-SEM,XRD,TG-DTG和DTA对复合陶瓷纤维的制备及烧结工艺进行了分析研究,实验结果表明所得陶瓷纤维保留了原蚕丝模板纤维的形貌,随着烧结温度的提高,蚕丝基体逐渐热解,纤维直径逐渐变小,在1200℃烧结后的主要相组成为:α-Al2O3、θ-Al2 O3、Y2 O3稳定t-ZrO2和m-ZrO2。Al2O3-ZrO2-Y2O3 composite ceramic fibers were prepared by template immersion method.Natural silk was used as template.Ethanol solution of Al（NO3）3,Zr（NO3）4 and Y（NO3）3 were used as immersion solution.The as-prepared fibers were characterized by FE-SEM,XRD,TG-DTG and DTA.The results indicate that the ceramic fibers retained the fiber morphology of the silk template and the diameter of fibers decreased with the increase of sintering temperature.After sintering at 1200 ℃,the fibers were mainly composed of α-Al2 O3,θ-Al2 O3,yttria stabilized t-ZrO2 and m-ZrO2.

关 键 词：模板浸渍法 蚕丝 Al2O3-ZrO2-Y2O3复合陶瓷纤维 

分 类 号：TB334[一般工业技术—材料科学与工程] TQ343.1[化学工程—化纤工业]