| 摘要 |
<p>PURPOSE:To obtain a thermal spraying alloy powder for forming a covering which has extending over many hours excellent oxidation resistance and corrosion resistance characteristics at a high temperature by specifying a composition consisting of Cr, Al, Y, Zr, Hf, a rare earth element, Ni, Co and Fe, etc. CONSTITUTION:A thermal spraying covering which is excellent in its high temperature corrosion resistance and high temperature oxidation resistance characteristics, and also excellent its thermal fatigue characteristic and ductility in a high temperature is formed by a thermal spraying alloy powder consisting of 30-45wt% Cr, 6-14% Al, 0.05-2% at least one kind of Y, Zr, Hf, a rare earth element, and their mixture, and at least one kind of Ni, Co and Fe as a balance. The thermal spraying alloy powder is used for thermal spraying in a low pressure inert gas atmosphere of 25-350 TORR especially, a covering layer which is dense and has an excellent characteristic is formed, and by setting its particle diameter to <=10-74mum, the workability can be improved.</p> |
