Improved black chromium plating bath useful for solar selective coatings.

Council of Scientific and Industrial Research, India (1991) Improved black chromium plating bath useful for solar selective coatings. 1017/DEL/86.

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Abstract

An improved black chromium plating bath useful for solar selective coatings which comprises mixture of an aqueous solution of sulphate free chromic acid and a catalyst consisting of ions of nitrate borate and fluorosilicate wherein the proportion of ingredients is(a) Ions of nitrate : 2-20 gpl(b) Ions of borate : 3-40 gpl(c) Ions of fluorosilicate : 0.2-5 gpl(d) The remaining being sulfate-free chromic acid, at room temp.

Item Type: Patent
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Surface Engineering Division, Surface Engineering Division, Surface Engineering Division, Surface Engineering Division
Depositing User: Mr Vijaianand SK
Date Deposited: 31 Jan 2005
Last Modified: 24 May 2010 09:39
URI: http://nal-ir.nal.res.in/id/eprint/652

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