不同喷涂工艺制备的Al_2O_3-13%TiO_2涂层表面自由能与冲蚀磨损性能研究  

Research on Surface Free Energy and Erosion Wear Property of Al_2O_3-13%TiO_2 Coatings Prepared by Different Spraying Processes

作　　者：李国禄[1] 李楠楠[1] 王海斗[2] 康嘉杰[3] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130 [2]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072 [3]中国地质大学(北京)工程技术学院,北京100083

出　　处：《机械工程学报》2016年第10期59-66,共8页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51275151);国家重点基础研究发展计划(973计划;2011CB013405);国家杰出青年科学基金(51125023)资助项目

摘　　要：采用接触角测量仪和冲蚀磨损试验机等设备,研究超声速等离子喷涂与普通大气等离子喷涂两种技术制备的Al_2O_3-13%TiO_2涂层的表面自由能和冲蚀磨损性能,并对涂层的显微硬度、孔隙率及成分进行检测分析。研究结果表明,普通大气等离子喷涂技术制备的涂层,其表面和内部结构疏松,孔隙率及显微硬度分别为6.653%和836.93 HV0.1。而超声速等离子喷涂技术制备的涂层,孔隙率及显微硬度分别为3.467%和1 078.68 HV0.1,相比普通大气等离子喷涂而言,超声速等离子喷涂制备的涂层整体性能较为优异。通过对两种涂层的结构和表面自由能分析发现,超声速等离子喷涂Al_2O_3-13%TiO_2涂层由于结构致密、表面自由能较低而具有较为出色的冲蚀磨损性能。Contact angle measuring device and erosion wear testing machine are used to study the surface free energy and erosion performance of the Al2O3-13%TiO2 coatings prepared by supersonic plasma spraying and atmospheric plasma spraying. The microhardness, porosity and compositions are analyzed. The results show that the coating prepared by atmospheric plasma have a loose surface and internal structure, it＇s porosity and microhardness are 6.653% and 836.93 HV0.1, respectively. It is lower than the coating＇s 3.467% and 1 078.68 HV0.1 prepared by supersonic plasma spraying. Overall, the coating prepared by supersonic plasma spraying has an improved performance. Due to the dense structure and lower surface free energy, the coating prepared by supersonic plasma spraying has a relatively good erosion performance.

关 键 词：冲蚀磨损 表面自由能 等离子喷涂 Al2O3-13%TiO2涂层 

分 类 号：TG174[金属学及工艺—金属表面处理]