模板转化法制备苎麻纤维织物SiC陶瓷  

Preparation of Ramie Fabric SiC Ceramics by Template Conversion Method

作　　者：胡泽涛[1] 王俊勃[1] 安招鹏 刘江南[1] 贺辛亥[1] 刘松涛[1] 姜凤阳[1,2] 赵文杰[1] 

机构地区：[1]西安工程大学机电工程学院,西安710048 [2]西北工业大学材料学院,西安710072

出　　处：《材料导报》2016年第4期17-20,40,共5页Materials Reports

基　　金：陕西省自然科学基础研究计划项目(2013JM6008);陕西省教育厅科学研究计划自然科学专项(14JK1314);西安工程大学博士科研启动基金项目(BS1302)

摘　　要：以苎麻纤维织物为生物模板,通过浸渍含有硅粉的酚醛树脂溶液,后经压制成型、碳化和1500℃烧结等工艺,制备了具有生物纤维形态的SiC陶瓷。利用XRD、SEM等测试技术,研究了不同烧结助剂对样品的各项性能和微观形貌的影响。结果表明:烧结助剂对苎麻纤维织物SiC陶瓷的失重率、显气孔率、体积收缩率等性能均产生了影响;添加Al_2O_3-Y_2O_3-SiO_2三元烧结助剂的SiC陶瓷具有最大的显气孔率和最小的体积收缩率;陶瓷中的SiC主要以β-SiC的形式存在;微观形貌分析显示,样品很好地保留了苎麻织物的纤维状微观结构。Using ramie fabric as biological template,SiC ceramics with biological fiber morphology was prepared.The sintering temepture was set at 1500℃,and some different sintering additives were added.XRD and SEM were applied to study the effects of sintering additives on sample properties and micromorphology.Results showed that the sintering additives had a significant effect on weight loss rate,apparent porosity,volume shrinkage rate.The largest porosity and the smallest volume shrinkage rate could be obtained when adding Al2O3,Y2O3 and SiO2 to the SiC ceramics.The main form of SiC in the ceramics wasβ-SiC.Morphology analysis confirmed that the fibrous microstructure of ramie fabric samples was well preserved.

关 键 词：模板转化法 苎麻纤维织物 SIC陶瓷 烧结助剂 

分 类 号：TQ174[化学工程—陶瓷工业]