Research Progress of Extreme High-speed Laser Cladding Technique and Wear/Corrosion-resistant Coating Materials

Extreme high-speed laser cladding technique is a newly-developed surface coating technology, which can be used to prepare dense protective coatings with a metallurgical bonding interface.Compared with the traditional cladding, extreme high-speed laser cladding technique has higher processing efficiency, and the prepared coatings possess much lower dilution and finer microstructure.Thus, extreme high-speed laser cladding coatings show superior protective service performance, which makes them more promising to be applied in industrial production.The fundamental principle and advantage of the extreme high-speed laser cladding technique were introduced, and the development status of the processing equipment in China and abroad were summarized.Furthermore, the current research progress and problems of extreme high-speed laser cladding coating materials were summarized and discussed.As last, the development trend of extreme high-speed laser cladding technology and corresponding coating materials was forecasted.