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化學(xué)配方數(shù)據(jù)庫(kù)
配方類(lèi)型： METALS AND TREATMENTS
配方說(shuō)明： Blackening Nickel Alloys
配方組成：
配制方法： The only suitable black finish which would come close to meeting these requirements would be oxide black, produced by heating the parts at 1550-2200F, for about 4-5 min. If the high temperature is not permissible, another alternative, although a more complicated one, is black chromium plating. This of course, will require a plating installation.
In either case, the metal surface can be matted by abrasive blasting or by immersion in a solution of equal parts of 42 Baume ferric chloride and hydrochloric acid.

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