Abstract
Using potassium chromate labeled with Cr/sup 51/, it has been shown that, during immersion of steel in chromate solution, logarithmic growth of an oxide film, containing chromic and iron oxides, proceeds in a manner similar to that of oxide film growth in air. The work also indicates the presence of an adsorbed Cr-containing layer. It is concluded that inhibition is maintained as long as the concentration of chromate ions in the solution (or the presence of the adsorbed layer) can sustain uninterrupted and orderly (logarithmic) growth of the oxide film. The work has also demonstrated the logarithmic growth of the oxide film on steel in air at room temperature. (auth)
Published Version
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