注凝成型莫来石增强磷酸铬铝复相陶瓷浆料的流变性及坯体性能研究  

Study on Body Behavior and Rheological Properties of Mullite Reinforced Aluminum Chromium Phosphates Composite Ceramics Slurry Prepared by Gelcasting

作　　者：何艳[1] 陈宁[2,3] 霍冀川[4] 高祀建[3] 杨猛[1] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地绵阳621010 [2]绵阳师范学院化学与化工学院,绵阳621000 [3]中国建筑材料科学研究总院,北京100024 [4]西南科技大学分析测试中心,绵阳621010

出　　处：《人工晶体学报》2014年第11期2886-2891,2896,共7页Journal of Synthetic Crystals

基　　金：国家高技术研究发展计划(863计划)(2009AA035002);四川省教育厅重点项目(10ZA061);四川省教育厅一般项目(13ZB0117)

摘　　要：本文研究单体用量、分散剂用量、p H值以及球磨时间对莫来石增强磷酸铬铝复相陶瓷注凝成型浆料流变性能的影响,研究了注凝成型的烧结样品的性能和显微结构。结果表明,当p H值为9,分散剂用量为固相质量分数的0.48%,球磨时间为8 h,单体浓度为14wt%,可制备出固相含量为53vol%,粘度最低的莫来石增强磷酸铬铝复相陶瓷的注凝浆料。利用SEM、万能力学测试仪、显微硬度计、E5071C矢量网络分析仪等测试手段对该材料进行表征。通过制品的性能参数和显微结构的比较,注凝成型制备的莫来石增强磷酸铬铝复相陶瓷的性能均优于干压成型制备的该陶瓷材料性能。The effect of monomer content,the amount of dispersant,p H value and ball milling time for which mullite reinforced aluminum chromium phosphates composite ceramics gelcasting rheological properties of the slurry was discussed in this paper. The mechanical properties and microstructure of sintered ceramic samples by gelcasting were investigated. The result indicated that low viscosity mullite reinforced aluminum chromium phosphates composite ceramics slurry with 53vol% solid loading can be obtained when the p H value is 9,the amount of dispersant for solid mass fraction is 0. 48%,ball milling time is 8 h,monomer content is 14wt%. This materials were analyzed by SEM,mechanical testing methods,micro-hardness tester and vector network analyzer. Compared with the performance parametersand microstructure of products,the properties of mullite reinforced aluminum chromium phosphates composite ceramics prepared by gelcasting are better than one by dry pressing.

关 键 词：注凝成型 复相陶瓷 流变性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]