method for treatment of surface of steel by ion implantation to modify the structure of the surface

摘要

1392811 Modifying stainless steel surfaces UNITED KINGDOM ATOMIC ENERGY AUTHORITY 27 March 1972 [7 April 1971] 9013/71 Headings C7F and C7U Stainless steel articles are case-hardened by subjecting them to ion bombardment by carbon ions, such that the ions are implanted in the surface regions of the articles. The ions may penetrate sufficiently to form a "buried layer" beneath the surface; in this case the outer region may then be removed down to the hardened structure.