悬浮粒子烧结法制备多孔不锈钢/TiO_2膜的研究  

Study on Preparation of Porous Stainless Steel/TiO_2 Membrane by Suspended Particles Sintering Method

作　　者：王连超[1] 谢佳[1] 席赟[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《热加工工艺》2016年第16期123-129,共7页Hot Working Technology

基　　金：国家自然科学基金面上项目(21377131)

摘　　要：采用悬浮粒子烧结法在不同孔径的多孔不锈钢表面制备均匀的TiO_2膜。通过扫描电镜和XRD研究了悬浮液、多孔不锈钢基体和烧结温度对膜层组织和性能的影响。研究表明:TiO_2颗粒的分散与悬浮液粘度是提高膜层质量的关键。随着烧结温度的增加,TiO_2膜层孔径减小;950℃烧结膜层综合性能较好,当烧结温度为1050℃时金红石相的TiO_2部分转变为亚氧化钛Ti_nO_(2n-1)相。当多孔金属平均孔径为10.0μm时,TiO_2粒子会内渗进入基体,同时造成膜层坍塌;当多孔金属平均孔径为2.0μm时,基体表面形成连续平整的TiO_2膜。Uniform TiO2 membrane was prepared on surface of porous stainless steel with different pore sizes by using suspended particles sintering method. Effects of suspension, porous stainless steel substrate and sintering temperature on the microstructure and properties of TiO2 membrane were studied by SEM and XRD. The results show that the dispersion of TiO2 particles and the viscosity of suspension are the key to improve the quality of membrane. With the increase of sintering temperature, the pore size of TiOz membrane decreases. The membrane has good comprehensive performance sintered at 950℃, part of rutile phase TiO2 translates into TinO2n-1 phase sintered at 1050℃. When the average pore diameter of porous stainless steel is 10.0μm, TiO2 particles infiltrate into the porous metal matrix, which makes the membrane collapse. When the average pore diameter of porous metal is 2.0μm, a continuous fiat TiO： membrane is formed on the surface of substrate.

关 键 词：多孔不锈钢 TIO2膜 悬浮粒子烧结法 

分 类 号：TG174.453[金属学及工艺—金属表面处理]