On the structure and chemical composition of chromium based conversion coatings on aluminium: a TOF SIMS study

Autor:	Gudrun Goeminne, Herman Terryn, Erik Cuynen, Pierre J. Van Espen
Rok vydání:	1999
Předmět:	Chemistry Analytical chemistry chemistry.chemical_element engineering.material Analytical Chemistry Secondary ion mass spectrometry Chromium Surface coating Coating Aluminium Conversion coating engineering Surface roughness Layer (electronics) Spectroscopy
Zdroj:	Journal of analytical atomic spectrometry
ISSN:	1364-5544 0267-9477
DOI:	10.1039/a807389i
Popis:	Cr based conversion coatings were studied by means of time-of-flight secondary ion mass spectrometry as a function of treatment time. It was shown that a duplex layer structure is present at any conversion time. During the coating development, the top layer, which is mainly composed of chromium phosphate, thickens while Al, F and AlO species are encapsulated in the inorganic coating. In order to minimize the influence of surface roughness, different substrates with smooth surfaces were converted and measured under identical conditions. It was shown that the duplex structure was not affected by the metallurgy of the different starting materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bffb0665999ff390330782ec986a8fca https://doi.org/10.1039/a807389i Zobrazit plný text záznamu