An investigation of the growth-mechanism of Cr2O3 on pure chromium in 1 atm oxygen at 950� C

Autor:	M. Skeldon, D. G. Lees, J. M. Calvert
Rok vydání:	1987
Předmět:	Chemistry Diffusion Kinetics Metals and Alloys Oxygene Oxide chemistry.chemical_element Crystal growth Microstructure Oxygen Inorganic Chemistry chemistry.chemical_compound Chromium Chemical engineering Materials Chemistry computer computer.programming_language Nuclear chemistry
Zdroj:	Oxidation of Metals. 28:109-125
ISSN:	1573-4889 0030-770X
Popis:	The growth mechanism of Cr2O3 scale formed when pure chromium was oxidized at 950°C in oxygen at 1 atm pressure has been investigated. Isotope tracer techniques were used to determine the growth sites of the oxide. The scale was buckled extensively, with the convex side always toward the gas, never the reverse. The following growth-mechanism is proposed. Initially growth occurs entirely by cation diffusion, with new oxide being formed at the oxide-gas interface. Then, at a time that is not the same for all parts of the scale, the growth mechanism changes to one in which new oxide is formed within the outer part of the scale.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1388167e26eca189df34516cea0c56e9 https://doi.org/10.1007/bf00666474 Zobrazit plný text záznamu Full text from SpringerLink