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Oxygen Concentration (at%)

Enhanced Corrosion Resistance of Stainless Steel due to Low-Temperature Carburization Frank Ernst, Case Western Reserve University, DMR 0722920. XPS Depth Profiles. Cyclic Polarization. carburized = filled symbols nontreated = open symbols. carburized. Oxygen Concentration (at%).

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Oxygen Concentration (at%)

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  1. Enhanced Corrosion Resistance of Stainless Steel due to Low-Temperature Carburization Frank Ernst, Case Western Reserve University, DMR 0722920 XPS Depth Profiles Cyclic Polarization carburized = filled symbols nontreated = open symbols carburized Oxygen Concentration (at%) Potential (mV vs Ag-AgCl) nontreated Depth (nm) carburized = filled symbols nontreated = open symbols Current Density (mA/cm2) Chromium:Iron Ratio A novel low-temperature carburization process increases the corrosion breakdown potential of 316L stainless steel by 850 mV. X-ray photoelectron spectroscopy (XPS) reveals the carburized specimens have thick surface oxide layers with high Cr:Fe ratios. The extra Cr in the oxide increases the corrosion resistance. Depth (nm)

  2. Enhanced Corrosion Resistance of Stainless Steel due to Low-Temperature Carburization Frank Ernst, Case Western Reserve University, DMR 0722920 Metallic corrosion damage to bridges and roadways is a severe problem. It resulted in an estimated direct cost in the US of $276 billion in 1998 (US Federal Highway Administration rpt. FWHA-RD-01-156)

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