| 摘要 |
PURPOSE:To reduce the cost of the resulting powder for flame spraying and to improve the spraying efficiency and the quality of a sprayed film by coating the surface of metallic or ceramic powder as a starting material with other metal. CONSTITUTION:The surface of metallic or ceramic powder 3a having a square shape as a starting material is coated with other metal by plating, vacuum deposition or other method to form each layer 3b. Since the layer 3b is deposited on the pointed ends in large quantities, the angular parts are made roundish, and the flowability is improved. The resulting powder 3 for flame spraying can be uniformly fed to plasma by a fixed quantity, so the feed of the powder 3 can be controlled, and the flame spraying efficiency and the quantity of a sprayed film can be improved. |
