| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for forming a corrosion-resistant protective film which enables long-term stable use of the film under high-temperature conditions, and to provide a high-temperature apparatus member using the same. <P>SOLUTION: The method for forming a corrosion-resistant protective film includes the steps of: carrying out Ni plating of a surface of a substrate 10 of a Ni-Cr alloy to form a Ni layer 12 on the substrate surface; and carrying out Al diffusion treatment of the surface of the Ni layer to form a protective layer 18 of Ni-Al. Accordingly, after the subsequent Al diffusion treatment, the equivalent of Cr is nearly zero in the interface region between the Ni-Al layer formed and the substrate. There is, therefore, no formation of anα-Cr layer in the interface region by the Al diffusion treatment, and thus no formation of voids with the growth of anα-Cr layer. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
