Chemical gilding process by autocatalytic reduction

Details Chemical gilding process by autocatalytic reduction Chemical gilding process by autocatalytic reduction

B - Operations, Transporting

05

D

117/77

B05D 1/26 (2006.01) C23C 18/44 (2006.01)

Patent

CA 1126592

PRECIS DE LA DIVULGATION: L'invention. concerne un procédé de dépôt chimique d'or par réduction autocatalytique en milieu fortement alcalin de sels solubles d'or. Le procédé selon l'invention est carac- térisé en ce que le bain de dépôt contient de faibles quantités de métaux appartenant aux groupes III, IV et V de la classifi- cation périodique des éléments et choisis plus particulièrement parmi l'aluminium, le gallium, l'indium, le thallium, le germanium, l'étain, l'arsenic, l'antimoine et le bismuth. Ce procédé permet d'augmenter de façon importante la quantité d'or déposé.

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