Substrate Effect on Micrestructure and Performance of LTHVOF Sprayed Copper Coatings
The performance of copper coatings fabricated on three substrates by LTHVOF spraying process was researched. XRD shows that substrate material has little effect on phase composition of coatings, and there is no oxide in the three coatings almost. These coatings are dense, and demonstrate little difference on the microstructure of the inner part of the coatings. However, microstructure of bonding area between coating and substrate shows big difference, copper coatings bonds compacter on soft substrate aluminum than hard substrate steel. Bonding strength of coatings sprayed on the soft substrate is higher than that on the hard substrate. Microstructure analysis of fracture surface shows that strong mechanical alloying phenomena when copper particles deposited on aluminum substrate. The average bonding strength of copper coatings on lCrl8Ni9Ti, 45＃ steel and LY12 is relatively 18.83, 17.49 and 32.14 MPa. Substrates have strong effect on microstructure and bonding strength, but little on phase composition...
bonding strength coating microstructure
Zha Bailin Yuan Xiaojing Zhan Jun Jiang Peng
Xian Research Institute of Hi-Tech, Xian 710025, China
国际会议
西安
英文
380-383
2011-05-11（万方平台首次上网日期，不代表论文的发表时间）