Summary form only given. The feasibility of plasma source ionimplantation (PSII) treatments for metal corrosion protection of bearingsteel (52100) in humid environments has been investigated, followingsuccessful results with aluminum alloy (6061). The bearing steel couponshave been treated by nitrogen PSII with a statistically designed rangeof processing conditions, including stage bias implant voltage, anddose. The corrosion properties of the implanted samples were testedusing aerated distilled water (72, 168, and 720 hours), 90° F, 90% RHair (24, 120, 816, and 1464 hours), and a nitric acid soak. The resultsare compared favorably with 440C stainless steel, and 52100 steel withnitrogen and argon recoil-implanted chromium. Evidence is seen for anoptimal process contour (low voltage-high dose; high voltage-low dose).Results from microstructure analysis are also presented
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