STUDY OF THE STRUCTURE OF PLASMA SPRAYING COATING DOPING NANOMETER Al2O3/ZrO2
Al2O3/ZrO2 heat barrier coating doped nanometer was prepared by ash plasma spraying method on N80 steel base. The structure and the phase of Al2O3/ZrO2 plasma spraying powder and ceramics coating with doping nanometer and prefabricating were investigated by modern material analysis means such as SEM and XRD etc. The results showed that the powder structure using plasma spraying doping nanometer was micrometer cladding nanometer in its surface and little nanometer regiment structure. The phase of powder was composed of α- Al2O3, stable tetragonal phase t- ZrO2 and some (about 5％) monoclinic phase m- ZrO2. The microstructure of plasma spraying coating doping nanometer Al2O3/ZrO2 was complicated. The particular structure include cylindrical micrometer crystal enwraped in putamina consist of nanometer ones, unmelted ZnO2 partical studded in the crystal. Coating consist of α- Al2O3 and metastable tetragonal phase t′- ZrO2.
plasma spraying heat barrier coating Al2O3/ZrO2 microstructure
李春福 单春艳 王斌 王戎 丁武成 牛艳花 朱泽华
油气藏地质及开发工程国家重点实验室(西南石油大学) 四川成都 610500 中国石油大学(北京),北京 102249
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）