Effect of halide anions and temperature on initiation of pitting in Cr–Mn–N and Cr–Ni steels

Autor:	R G Raicheff, Boriana Tzaneva, L B Fachikov
Rok vydání:	2006
Předmět:	Chemistry Scanning electron microscope General Chemical Engineering Inorganic chemistry Pitting corrosion medicine Halide General Materials Science General Chemistry Chloride medicine.drug Ion
Zdroj:	Corrosion Engineering, Science and Technology. 41:62-66
ISSN:	1743-2782 1478-422X
DOI:	10.1179/174327806x94027
Popis:	The pitting corrosion of Cr18Mn12N and Cr18Ni9 steels in halide solutions (F−, Cl−, Br− and I−) has been investigated. The study involved cyclic potentiodynamic polarisation tests with subsequent examination of the specimens by both optical and scanning electron microscopy. Values of the critical concentrations of halide ions, [X−]cr, beyond which pitting occurs, as well as breakdown potentials for pitting in chloride solution, have been established. In addition, the effect of the temperature over the range of 5–80°C on the critical chloride ion concentration [Cl−]cr has been investigated and it has been found that temperature has a negligible effect beyond 40°C.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::65459aa357e9b2da2a175c6d1058b433 https://doi.org/10.1179/174327806x94027 Zobrazit plný text záznamu Plný text ve formátu PDF