Effect of Ultrasonic Vibration on the Microstructure and Properties of Supersonic Flame Spraying-Induction Cladding Composite Coatings

0Cr13Ni5Mo is a type of martensitic stainless steel with characteristics such as high strength, corrosion resistance, and excellent weldability, and it has important application value in industrial fields such as hydropower, petroleum, and nuclear power. To improve its service life, wear-resistant coatings were prepared using supersonic flame spraying and induction remelting technologies, and ultrasonic vibration was applied to optimize the microstructure and properties of the coatings. The phase composition and microstructure of the coatings were observed and analyzed using equipment such as metallographic microscopes, X-ray diffractometers (XRD), scanning electron microscopes (SEM), and energy dispersive X-ray spectrometers (EDS). In addition, the microhardness and wear resistance of the coatings were evaluated through microhardness testing and erosion wear experiments. The research results show that when the ultrasonic impact power is 400 W and the ultrasonic impact time is 30 s, the microstructure and mechanical properties of the coating reach the optimal state. At this condition, the microhardness of the coating reaches 1574.5 HV, and the porosity is only 0.949%, indicating that the coating has excellent mechanical properties and a dense microstructure.