Corrosion inhibiting hafnium compositions

Details Corrosion inhibiting hafnium compositions Corrosion inhibiting hafnium compositions

C - Chemistry, Metallurgy

09

K

117/166, 31/43

C09K 15/04 (2006.01) C23C 22/34 (2006.01) C23C 22/36 (2006.01)

Patent

CA 1120251

ABSTRACT OF THE DISCLOSURE An aqueous acidic composition provides improved corrosion resistance to a metal, e.g., fereous, zinc or aluminum surface upon contact. The composition contains dissolved hafnium and fluoride and preferably a vegetable tannin compound.

321927

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