Microstructure and Mechanical Properties of TiAlNb Coating Deposited by APS and HVOF Spraying

摘要：

　　As a material intended for application in hot-dip galvanization,Ti28.15Al63.4Nb8.25Y (at %) coatings were deposited onto 316L stainless steel substrate using high velocity oxygen fuel (HVOF) and atmospheric plasma spray (APS),respectively.The influence of different thermal spraying techniques on the microstructure,phase transformation,porosity,bond strength and hardness values of Ti28.15Al63.4Nb8.25Y coatings was analyzed by scanning electron microscopy (SEM),X-ray diffraction,tensile test and other analysis methods.In addition,the thermal shock test of Ti28.15Al63.4Nb8.25Y coatings was carried out to evaluate the desquamation resistance and the model of invalidation.The results indicated that HVOF Ti28.15Al63.4Nb8.25Y coatings had more uniform and compact morphology than APS Ti28.15Al63.4Nb8.25Y coating and HVOF Ti28.15Al63.4Nb8.25Y coatings have lower porosity and oxide content.The coatings processed by HVOF had higher bond strength,microhardness and thermal shock resistance and displayed better mechanical properties than that prepared by APS.

关键词： TiAlNb Coating HVOF APS Mechanical property Thermal shock test

作者: Hongjie Zeng Laiqi Zhang Xinyu He Youcha Zhang Pen Jia Junpin Lin

作者单位: State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing Beijing Langqiao Surface Technology Co. Ltd, Beijing 100083, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 139-145

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）