摘要
采用微米粉末和纳米粉末,分别在45钢表面等离子喷涂Al2O3-13%TiO2涂层,测定了涂层的显微硬度和孔隙率,分析了涂层的显微组织。结果表明;微米尺寸粉末制备的Al2O3-13%TiO2涂层具有明显的层状结构;纳米尺寸粉末制备的Al2O3-13%TiO2涂层中有大量的未熔和半熔化粒子,粒子间结合紧密,涂层孔隙率小。
Al2O3-13%TiO2 coatings were prpared by plasma spraying with micron powder and nano powder on 45 steel. The microhardness and porosity of coating were tested and the microstructure was analyzed. The results show that： the nano-Al2O3-13%TiO2 coating has a large number of the integration semi-melted particles, while the micron coating has a significant layer structure. The nano-Al2O3-13%TiO2 coating has a higher vickers micro-hardness bonding strength and a lower porosity.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2012年第3期9-11,共3页
Surface Technology
关键词
等离子喷涂
涂层组织
纳米结构
双态结构
plasma spray
coating structure
nano-structure
bimodal structure
