Chemically deposited Ni-W-B coatings: Composition, structure, and properties

The effect of temperature and solution components of the chemical catalytic reduction on the composition of Ni-W-B alloy coatings is studied. The x-ray photoelectron spectroscopy in combination with the layer-by-layer profile analysis is used to determine the chemical state of elements and the compo...

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Bibliographic Details
Published in:Protection of metals 2005-01, Vol.41 (1), p.55-62
Main Authors: Drovosekov, A B, Ivanov, M V, Krutskikh, V M, Lubnin, E N, Polukarov, Yu M
Format: Article
Language:English
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Summary:The effect of temperature and solution components of the chemical catalytic reduction on the composition of Ni-W-B alloy coatings is studied. The x-ray photoelectron spectroscopy in combination with the layer-by-layer profile analysis is used to determine the chemical state of elements and the composition of surface and bulk layers of the coatings containing 28 and 1.8 wt % (10 and 12 at. %) tungsten and boron, respectively. The surface of such coatings is shown to contain up to 90 and 80 at. % reduced nickel and boron, respectively. The deposits have amorphous structure. The effect of thermal treatment conditions on the structure and microhardness of the coatings is investigated. The coatings with a tungsten content of 10 at. % are shown to be nonmagnetic. [Substrates: Ni, Cu].
ISSN:0033-1732
2070-2051
1608-327X
2070-206X
DOI:10.1007/s11124-005-0008-1