The effect of localized corrosion on the corrosive-abrasive wear of high carbon low alloy (HCLA) steel, abraded by quartz, was studied using a rotating cylinder-anvil apparatus. Measurements were made in 15% quartz slurries of variable pH. The area associated with localized corrosion was measured using image analysis techniques. Measured corrosion, localized corrosion area and total wear were observed to increase proportionally for conditions of increasingly positive potential, higher loading and lower pH. Cathodic protection of HCLA steels at potentials more negative than -0.7v decreased total wear by as much as 40%. Transient voltage-current traces obtained during alternate loading cycles illustrate the important contribution of film growth kinetics and physical structure of the oxide films formed.

Subject
Electric current, Wear, Anode potential, Abrasion, Corrosion rate, Oxide formation, Oxide films, Quartz, Film formation, Anodic current, Steel, Localized corrosion, Corrosion potential
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1988
Association for Materials Protection and Performance (AMPP)
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