Erosion-corrosion of mild steel. (2nd Report, Effect of pH and Cl ions)

The effects of pH and Cl ion concentration on erosion-corrosion of mild steel in aqueous solutions were investigated using an impingement jet flow apparatus. It was found that the mass loss in ion-exchange water decreased with jet velocity, and the mass loss in the water with 6.7 ppmCl reached a pea...

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Veröffentlicht in:Nihon Kikai Gakkai rombunshuu. B hen 1989, Vol.55 (518), p.3000-3005
Hauptverfasser: MANJO, Hiroshi, KURATA, Yoshiaki, ASANO, Osamu, SANADA, Norio
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container_issue 518
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container_title Nihon Kikai Gakkai rombunshuu. B hen
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creator MANJO, Hiroshi
KURATA, Yoshiaki
ASANO, Osamu
SANADA, Norio
description The effects of pH and Cl ion concentration on erosion-corrosion of mild steel in aqueous solutions were investigated using an impingement jet flow apparatus. It was found that the mass loss in ion-exchange water decreased with jet velocity, and the mass loss in the water with 6.7 ppmCl reached a peak at 0.1 m/s. Such a peak appeared in the case of the other solutions, but the peak value depended on pH, and was absent when pH > 6.5, because the increase of pH suppressed the breakdown effect of the Cl ion. A large number of pits were generated on the mild steel subjected to the solutions with Cl ions, probably because the Cl ions caused breakdown of parts of the protective film.
doi_str_mv 10.1299/kikaib.55.3000
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source J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; EZB-FREE-00999 freely available EZB journals
subjects corrosion
erosion
steel
title Erosion-corrosion of mild steel. (2nd Report, Effect of pH and Cl ions)
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