Investigation of surface composition of electrodeposited black chrome coatings by X-ray photoelectron spectroscopy

Anandan, C and William Grips, VK and Rajam, KS and Jayaram, V and Bera, P (2002) Investigation of surface composition of electrodeposited black chrome coatings by X-ray photoelectron spectroscopy. Applied Surface Science, 191 (1amp;4). pp. 254-260.

[img] PDF
2002-254-260.pdf
Restricted to Registered users only

Download (126kB)

Abstract

Solar selective black chromium coating was electrodeposited on pre-treated electroformed nickel substrates from a hexavalent chromium containing bath. The composition of the film was investigated before and after annealing at 400xB0;C for different durations. In the as-deposited condition, the surface of the film was found to have trivalent chromium hydroxide and chromium in the chromate form contrary to previous studies which report the presence of hydroxides and metallic chromium. However in the present study, no evidence for metallic chromium was found. The major component, chromium hydroxide, was converted to Cr2O3 on annealing at 400xB0;C with the loss of water vapor. The chromate form remains but with a lowered concentration. xA9; 2002 Elsevier Science B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Black chrome; Solar selective coatings; X-ray photoelectron spectroscopy; Annealing; Chromate coatings; Electrodeposition; Substrates; Surfaces; X ray photoelectron spectroscopy; Solar selective coatings; Black coatings;
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: MS Jayashree S
Date Deposited: 20 Jan 2005
Last Modified: 28 Aug 2012 10:46
URI: http://nal-ir.nal.res.in/id/eprint/93

Actions (login required)

View Item View Item