| 摘要 |
PURPOSE:To obtain an ornamental member having excellent corrosion resistance and ornamental effect by forming an oxide layer of a black or green color on the surface of a base alloy composed of austenitic stainless steel. CONSTITUTION:A base alloy consisting of austenitic stainless steel is manufactured and the surface layer thereof affected by working is removed by pickling, honing or other processes. Then the base alloy is subjected oxidation treatment in an oxidizing atmosphere at about 1,000 deg.C for about 2.5hr, or at about 1,250 deg.C for 0.1-1hr, to form an oxide layer of a black color on the surface thereof; or is subjected to oxidation treatment at a temp. lower than the said temp. to form an oxide layer of a green color on the surface thereof. The thickness of the oxide layer is 2-20mu. |
