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供等离子喷涂用的粉末是由不锈钢和从Ti、Zr、Hf、Nb、Ta、Mo或W中选择的一种高熔点金属(占30～85at％)组成的预合金混合物。这种粉末是在含氧气氛中用等离子喷涂并生成一种耐腐蚀的粘结合金涂层。该涂层呈非晶形或微晶形结构,最好由Fe或Ni35～75at％、Cr～20at％和高熔点金属5～55at％组成。本工艺适合于喷涂不锈钢、工具钢、铜及钢基体材料,最好用喷丸清理进行预处理,并用作为粘结层的镍铬铁合金任意涂敷。
The powder for plasma spraying is a prealloyed mixture of stainless steel and a refractory metal selected from Ti, Zr, Hf, Nb, Ta, Mo or W (30 to 85 at%). This powder is plasma sprayed in an oxygen-containing atmosphere and produces a corrosion-resistant bond alloy coating. The coating is amorphous or microcrystalline and preferably consists of 35-75 at% Fe, 35-75 at% Cr, 5-20 at% Cr and 5-55 at% of the refractory metal. The process is suitable for spraying stainless steel, tool steel, copper and steel matrix material, the best pretreatment with shot peening, and nickel-chromium-iron alloy as an adhesive layer arbitrary coating.