Brief Introduction of Nano Cobalt Tungsten Carbide
Nanostructured WC-Co has been used as protective coatings and cutting tools. This is because the nanostructured WC-Co is significantly superior to ordinary coarse-grained materials in terms of hardness, wear resistance, and toughness. Among them, the mechanical properties are improved by about an order of magnitude, and may be further improved. High-energy ball milling or chemical synthesis of WC-Co nanoalloys has been industrialized. The chemical synthesis includes three main steps: the preparation and mixing of the starting solution; the spray drying to form a chemically uniform raw powder; and the thermochemical conversion into nanocrystalline WC-Co powder by fluidized bed. Spray drying and fluid bed inversion have been used to mass produce metal carbide powders. The latest research shows that nano-WC-Co composite powders are used as wear-resistant coating materials to show good results. The coatings prepared by rapid melting and rapid condensation thermal spraying technology can maintain the nanostructure characteristics of the powder, thus significantly Improves the performance of hard alloy wear-resistant coatings.
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