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.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
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
