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Role of Hydrogen Promoters on Corrosion and Hydrogenation of Mild Steel in Aqueous and Methanolic Hydrochloric Acid

机译:Role of Hydrogen Promoters on Corrosion and Hydrogenation of Mild Steel in Aqueous and Methanolic Hydrochloric Acid

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摘要

Corrosion and hydrogenation of mild steel (MS) in aqueous and methanolic solutions of hydrochloric acid (HCl) were studied using weight loss, electrochemical, and hydrogen estimation methods. The effects of some hydrogen-promoting .species Midi as cathodic poisons (i.e., sodium arsenite NaASO_2 selenium dioxide SeO_2, stannous chloride SnCl_2, Mercuric chloride HgCl_2) were investigated to under-stand role on the dissolution and hydrogen absorption characteristics of MS in aqueous and methanolic HCl solution. Where Die dissolution rate of MS in methanolic solution of HCl was considerably higher than in the aqueous HCl solution where as the hydrogen pickup values of the steel in methanolic solution were less than in the aqueous HCl solution Addition of NaAsO_2 lowered the dissolution rate and hydrogen pickup value in both solutions. The other poisons had specific effects on the dissolution rate and hydrogen pickup values.

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