| 摘要 |
<p>The surface is formed on the metal body with non-metallic substance in first method stage. The surface layer is removed on at least one of non-metallic substances contained in surface layer in second method stage. The metal alloy comprises of at least one of the metals e.g. iron, copper, cobalt, chromium, titanium, tantalum, molybdenum, manganese and silicon as primary component or as addition. The non-metallic substance comprises of carbon, oxygen, nitrogen, sulfur, or phosphorus.</p> |
