Evolution and Prospect of Thermal Spraying Technique

In this article,current state development and process evolution of thermal spray technology during last century(1910 2010) were reviewed.An three-step evolution trend(heat energy dominance,kinetic energy dominance,innovative idea and composite performance dominance) was advanced in order to get comprehensive understanding on this technology and do better in promoting its future development.Low pressure plasma spraying-thin film(LPPS-TF),cold spray(CS) and suspension or solution srecursor plasma spray(SPS/SPPS) were selected among emerging novel spray processes to be briefly introduced from two aspects(process characteristics and potential applications).Comparison of spray output value and detail contribution ratio distribution of various industry or process through world and Asia spray industry market were made to probe into what can be improved as for China thermal spray industry in future.It was suggested that increasing plasma spray and HVOF contribution to applications,take active steps to explore RD of some novel spray technology like above mentioned and their possible applications especially in high-tech industrial such as electrics,semiconductor and new energy.