Composition and method for metal surface refinement

Details Composition and method for metal surface refinement Composition and method for metal surface refinement

C - Chemistry, Metallurgy

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C23G 1/24 (2006.01) B24B 31/14 (2006.01) C23C 22/73 (2006.01) C23F 1/00 (2006.01) C23F 3/00 (2006.01) C23G 1/26 (2006.01) C25D 5/34 (2006.01)

Patent

CA 1284763

ABSTRACT OF THE DISCLOSURE A composition for use in the mass finishing of metal surfaces of objects, normally in a vibratory finishing process, utilizes the combination of oxalic acid, sodium nitrate, and hydrogen peroxide. The maximum concentration of the latter is limited to a value at which excessive dissolution of metal and pitting of the surface are avoided while, at the same time, cooperating with the nitrate to effect a substantial increase in the processing rate. Highly refined surfaces are achieved with the process in relatively short periods of time.

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