首页>
外国专利>
Method for forming Cr2O3 film on stainless steel surface
Method for forming Cr2O3 film on stainless steel surface
展开▼
机译:在不锈钢表面形成Cr 2 O 3膜的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for forming a chromium oxide film on the surface of a stainless steel sample. The method includes: (a) placing a sample having stainless a steel surface into a vacuum furnace, evacuating the vacuum furnace to a pressure of 2×10−7 to 3×10−7 Torr, and heating the vacuum furnace to 450 to 600° C. at a rate of 5 to 10° C./min; (b) maintaining the vacuum furnace for 10 to 20 minutes at a temperature of 450 to 600° C. to remove foreign materials from the surface of the stainless steel sample and to extract chromium atoms from the stainless steel substrate; and (c) supplying oxygen to the vacuum furnace while maintaining the temperature until oxygen partial pressure reaches 1×10−9 to 2.5×10−7 Torr, so the extracted chromium atoms react with oxygen, producing a chromium oxide (Cr2O3) film on the surface of the stainless steel. The dense and smooth Cr2O3 film improves oxidation resistance and sorption resistance, and suppresses diffusion and permeation of hydrogen.
展开▼