Improved phosphating operation

Details Improved phosphating operation Improved phosphating operation

C - Chemistry, Metallurgy

23

C

C23C 22/07 (2006.01) C23C 22/36 (2006.01) C23C 22/73 (2006.01)

Patent

CA 2413646

Operational problems such as scale and sludge formation which are encountered in phosphating processes using compositions containing zinc and at least one of Ni, Co, or Zn may be alleviated by maintaining an effective level of dissolved iron cations in such compositions.

Pour réduire les problèmes opérationnels tels que la formation de tartre et de dépôt rencontrés dans les processus de phosphatation effectués à l'aide de compositions contenant du zinc et au moins un élément tel que Ni, Co ou Zn, on maintient un niveau effectif de cations fer dissous dans ces mêmes compositions.

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