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Effect of Arsenic on Permeation of Hydrogen Through Steel Membranes polarized cathodically in aqueous solution

✍ Scribed by T. Zakroczymski; Z. Szklarska-Śmiałowska; M. Smialowski

Publisher
John Wiley and Sons
Year
1975
Tongue
German
Weight
850 KB
Volume
26
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

A sensitive technique is developed for studying the effect of As and its compounds on the permeation of hydrogen through steel membranes electrolytically charged at various pH values. Use of a rotating disc electrode permits to change pH at the cathode over a large range without changing composition of the bulk electrolyte. The results of this study strongly support previous conclusions as to the dominant part played by promoter hydrides as species accelerating the entry of hydrogen into metals. In the case under consideration, AsH~3~ has been found to promote the permeation of hydrogen evolved from acid and alkaline media. On the other hand, surface films, deposits, and precipitates of As impede the entry of hydrogen into the steel.

📜 SIMILAR VOLUMES

Deposits formed on iron during cathodic
Deposits formed on iron during cathodic polarization in the presence of arsenic and their effect on hydrogen permeation
✍ E. Lunarska; Z. Szklarska-Śmiałowska; M. Smialowski 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 German ⚖ 628 KB

## Abstract Deposits produced on iron and steel during cathodic polarization in the presence and absence of arsenic in acid and alkaline solutions have been studied microscopically, by electron microprobe analysis, and by double layer capacity measurements. The results of these studies are compared