COMPOSITION OF ELECTROLESS BLACK PLATING BATH AND FORMATION OF COATING FILM
PROBLEM TO BE SOLVED: To form a black plating film with an electroless black plating bath capable of forming a black plating film without carrying out post-treatment for blackening and to obtain an article with a black plating film. SOLUTION: An electroless black plating bath contg. a nickel salt an...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To form a black plating film with an electroless black plating bath capable of forming a black plating film without carrying out post-treatment for blackening and to obtain an article with a black plating film. SOLUTION: An electroless black plating bath contg. a nickel salt and a reducing agent and further contg. a sulfur-contg. compd. and zinc ions is used. The plating bath may further contain a nitrogen-contg. compd. and a fine particle-shaped material. A body to be plated is immersed in the plating bath for a prescribed time and a black plating film is formed by electroless plating. By this method, an article with a black plating film of a desired thickness is obtd. |
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