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A comparison of the wear behavior of Ag, B, C, N, Pb and Sn implanted steels with 1.5 to 1.8 % chromium
Different steels with chromium contents between 1,5 and 18 % were implanted with nitrogen, boron, carbon, silver, lead, and thin using doses between 10 high 17 and 4 x 10 high 17 cm high minus 2. It was found that nitrogen is very effective in hardening steels with high chromium content. Boron reduces the wear of martensitic X90CrMoV18 in the range of two orders of magnitude. Carbon is very effective in hardening and reducing wear in the low chromium tool steel 100Cr6 which cannot be hardened by nitrogen implantation. The results strongly depend on testing atmosphere, load, and material of the ball use for friction tests. It is, e.g., possible that implantation gives good results for a combination of steel and ion species tested under laboratory atmosphere, and only marginal improvement when tested under dry nitrogen. The implantation of silver, tin, and lead does not change the hardness of the steels investigated. However, a reduction of friction coefficient was found, whichimplied s ome wear rate reduction.