以SiC微粉为发泡剂制备花岗岩基泡沫陶瓷  

Preparation of granite waste-based foamed ceramics using SiC micropowder as foaming agent

作　　者：吴晓鹏 詹学武 邢益强 王世界 赵飞 潘孟博 马成良 Wu Xiao-peng;Zhan Xuewu;Xing Yiqiang;Wang Shijie;Zhao Fei;Pan Mengbo;Ma Chengliang(Henan Key Laboratory of High Temperature Functional Ceramics,School of MaterialsScience and Engineering,Zhengzhou University,Zhengzhou 450052,Henan,China;不详)

机构地区：[1]郑州大学材料科学与工程学院河南省高温功能材料重点实验室,河南郑州450052

出　　处：《耐火材料》2020年第4期296-299,共4页Refractories

基　　金：国家自然科学基金资助项目(51472220,51872265)。

摘　　要：以花岗岩废料和黏土为主要原料,以SiC微粉为发泡剂,经球磨混合、造粒、装模(坩埚)煅烧制成泡沫陶瓷试样。研究了SiC微粉的添加量和粒径对试样孔隙率、密度、吸水率、抗压强度、物相组成和显微结构的影响。结果表明:1)随着SiC微粉添加量的增多,试样的孔隙率、吸水率增大,密度、抗压强度减小。2)在SiC微粉添加量相同时,随着SiC微粉粒径的增大,试样的孔隙率、吸水率减小,密度、抗压强度增大。3)SiC微粉粒径d 50=6.5μm、添加量为0.6%(w)的试样的综合性能较好,吸水率为5.42%,孔隙率为76.92%,密度为590 kg·m-3,抗压强度为12.7 MPa。Foamed ceramic samples were prepared using granite waste and clay as the main starting materials,SiC micropowder as the foaming agent,ball grinding,granulating,molding(crucible)and calcining.The effects of the addition and the particle size of the SiC micropowder on the porosity,the density,the water absorption,the compressive strength,the phase composition and the microstructure were studied.The results show that:(1)with the increase of the SiC micropowder addition,the porosity and the water absorption of the samples increase,and the bulk density and the compressive strength decrease;(2)with the same SiC micropowder addition,as the particle size of the SiC micropowder increases,the porosity and the water absorption of the samples decrease,and the bulk density and the compressive strength increase;(3)the optimal sample can be obtained using SiC with particle size of d 50=6.5μm and addition of 0.6 mass%:5.42%of water absorption,76.92%of porosity,590 kg·m-3 of bulk density and 12.7 MPa of compressive strength.

关 键 词：SIC微粉 花岗岩废料 泡沫陶瓷 孔隙率 抗压强度 

分 类 号：TQ174.7[化学工程—陶瓷工业]