6533b826fe1ef96bd1285086

RESEARCH PRODUCT

Investigation of pitting resistance of titanium based on a modified point defect model

Xin DaiTruls NorbyHugh MiddletonZhonglin JiangZhonglin Jiang

subject

Materials sciencePassivationGeneral Chemical EngineeringMetallurgyOxideAnalytical chemistrychemistry.chemical_elementGeneral ChemistryChlorideCorrosionchemistry.chemical_compoundchemistryX-ray photoelectron spectroscopyPitting corrosionmedicineHydroxideGeneral Materials Sciencemedicine.drugTitanium

description

Abstract The pitting resistance of titanium was studied under potential control in solutions containing chloride ions. The results evidenced that Cl − concentration had an effect on the metastable pitting intensity, but no significant influence on the uniform corrosion. XPS characterization revealed that some Cl − ions were present in the outer hydroxide layer, but few in the inner oxide layer, indicating that the inner oxide layer was impervious to Cl − ions. A cation–anion-vacancy condensation mechanism was considered for pit initiation based on the point defect model (PDM). The experimental results analyzed by the charge integration technique were in agreement with the derived relations.

yearjournalcountryeditionlanguage
2011-02-01Corrosion Science
https://doi.org/10.1016/j.corsci.2010.11.015