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Research Status of Amorphous Coatings
Amorphous is a long-range disorder, short-range orderly material. The physical and chemical properties of amorphous materials are more excellent than the corresponding crystalline materials. They are high strength, high toughness, high hardness, high corrosion resistance and soft magnetic properties. It is a kind of new metal material with great development prospect [twenty four]. Thermal spraying amorphous alloy coating is a new field of extensive research in materials science in recent years. Thermal spraying technology has been widely regarded as one of the preparation methods of large area amorphous coating. Commonly used methods are plasma spraying, HVOF and Explosive spray.
(Including Si, B, Cr, Ni, etc.) were prepared by plasma spraying process. The microstructure of the coating was uniform, the coating density was high, the porosity was low, Oxide content is less, and has a high hardness, micro hardness in the range of 530 ~ 790HV0.1, the coating and the substrate with a good combination.