ELECTROCHEMICAL INVESTIGATION OF CORROSION OF IRON IN OXYGEN SATURATED SULPHURIC ACID SOLUTIONS.
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作者:
Bala, H.
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Technical Univ of Czestochowa, Czestochowa, Pol, Technical Univ of Czestochowa, Czestochowa, PolTechnical Univ of Czestochowa, Czestochowa, Pol, Technical Univ of Czestochowa, Czestochowa, Pol
Bala, H.
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机构:
[1] Technical Univ of Czestochowa, Czestochowa, Pol, Technical Univ of Czestochowa, Czestochowa, Pol
Measurements of the spontaneous dissolution rate of a pure iron rotating disc in oxygen saturated 0. 5-11 M H//2SO//4 solutions have been made at 25 degree C. In contrast to similar studies performed in deaerated solutions, it has been shown that oxygen considerably reduces the catalytic effect of a sulfate ion reduction product on the rate of iron corrosion by slowing the rate of hydrogen depolarization. The presence of oxygen even causes a decrease in iron corrosion rate in more concentrated solutions of the acid and leads to local minima on the corrosion rate versus stirring rate curves.