Performance of Coatings Prepared by Laser and Argon Arc Techology

The alloy coatings were prepared by arc spraying technology, then re-melted by argon arc and laser remelting technology respectively. Experiments such as microstructure, mechanical performance, wear and high-temperature corrosion were carried out. The results showed that the adhesives strength of the coatings reached 1200 HV which was 6 to 7 times higher than that of 20 G, the resistance to high-temperature corrosion of the coatings was 2.5 to 4 times higher than that of 20 G. Further analysis showed that the microstructure was uniform, metallurgical bonding was formed between the coating and the substrate. And then the argon arc and laser remelting technology were compared.