The cavitation resistance of HVOF deposited WC-CoCr cermet coating in hydraulic application

Monday, May 27, 2019: 16:15
Exhibit Hall C (Pacifico Yokohama)
Dr. Enwei Qin , Suzhou Nuclear Power Research Institute, Suzhou, China
Mr. Bo Wang , Suzhou Nuclear Power Research Institute, Suzhou, China
Prof. wenli li , Soochow University, Suzhou, China
Mr. Qian Huang , Suzhou Nuclear Power Research Institute, Suzhou, China
Mr. chenyang pan , Suzhou Nuclear Power Research Institute, Suzhou, China
Mr. Shuhui wu , Suzhou Nuclear Power Research Institute, Suzhou, China
Thermal spray is a versatile technique for enhancing the cavitation resistance of hydraulic water passage components, especially in on-site repair situation. Based on the application in hydraulic components, a WC-CoCr cermet coating was deposited by high velocity oxygen fuel spraying. The microstructure and hardness was characterized, and the cavitation was studied by ultrasonic vibratory system according to ASTM G32 standard. The coating shows superior anti-cavitation behavior in term of mass weight loss compared with the martensite stainless steel. The cavitation erosion mechanism is elaborated with wrinkles and craters observed on the worn surfaces, and correlated with the incubation and accelerating stages.
See more of: Oerlikon Metco Young Professionals Session
See more of: Young Professionals Session