| 摘要 |
PROBLEM TO BE SOLVED: To provide a member for high temperature use which has a surface treated layer usable at high temperatures, and has excellent oxidation resistance and wear resistance, and to provide a production method therefor. SOLUTION: A base material made of a low carbon metallic material containing <=0.40 mass% C is subjected to carburization treatment to form a carburized layer, preferably, having a thickness of 50 to 500μm. Next, the base material is dipped into a chromium-containing molten salt held at >=850 deg.C. In this way, a chromium carbide layer having a thickness of 1 to 30μm is formed on the surface layer. The chromium carbide layer preferably consists of a layer of Cr7 C3 alone or Cr23 C6 alone, or a mixed layer of Cr7 C3 and Cr23 C6 or further mixed with Cr3 C2 .
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