Preparation of selective surfaces of black cobalt by the sol-gel process
Black cobalt, Co3 O4, thin solid coatings on stainless steel and glass substrates have been prepared by the dip coating technique via the sol-gel route using a CoCl2 precursor. The coatings produced on substrates exhibit a blue to black colours as a function of the film thickness. Sols have been made from a cobalt acetate precursor 0.1 M, and for such conditions, the dip coating process gives 0.08–0.25 μm thick uniform films per dipping, depending on the viscocity of the sol.
Year of publication: |
1996
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Authors: | Barrera, E.C. ; Viveros, T.G. ; Morales, U. |
Published in: |
Renewable Energy. - Elsevier, ISSN 0960-1481. - Vol. 9.1996, 1, p. 733-736
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Publisher: |
Elsevier |
Subject: | Selective Surfaces | Black cobalt | Sol-gel process | cobalt oxide |
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