摘要
To understand the effects of spray parameters on the splashing,cast iron particles were plasma-sprayed onto polished surfaces of aluminum substrate to form single splats.Various plasma arc powers and spray distances were applied to adjust the morphology of the splats which was studied using a field emission scanning electron microscope（FESEM）.The experimentalresults showed that the splashing of impinging droplets was significantly restrained for the splats deposited with high arc power（30 k W）and short spray distance（80 mm）.This finding would be beneficialto improving the adhesive strength of the coating.
To understand the effects of spray parameters on the splashing,cast iron particles were plasma-sprayed onto polished surfaces of aluminum substrate to form single splats.Various plasma arc powers and spray distances were applied to adjust the morphology of the splats which was studied using a field emission scanning electron microscope（FESEM）.The experimentalresults showed that the splashing of impinging droplets was significantly restrained for the splats deposited with high arc power（30 k W）and short spray distance（80 mm）.This finding would be beneficialto improving the adhesive strength of the coating.
基金
Funded by the State Key Laboratory for Mechanical Behavior of Materials(20131312)
the Special Fund for Basic Scientific Research of Central Colleges
Chang’an University(Nos.310831161018,2014G1311093,and 2014G1311082)
