近年来,由于六价铬的毒性及其对环境的严重危害,加快了三价铬电沉积的研究。但三价铬电沉积难以获得厚铬镀层,而铬基二元合金在镀厚性方面具有明显的优势。详细总结了三价铬体系电沉积铬镍、铬铁、铬钴、铬磷、铬碳和锌铬等二元合金的工艺,并简述了镀层的特性及应用。三价铬合金电镀将会在生产中有着广阔的应用前景。

Since hexavalent chromium has bad effects on environment, research on the trivalent chromium electrodeposition has been accelerated. Thick chromium coatings are difficultly deposited from trivalent chromium bath, and chromium binaryalloy coatings have distinct advantages at deposit thickness. Electrodeposition technologies of Cr-Ni, Cr-Fe, Cr-Co, Cr-P, Cr-C and Zn-Cr from trivalent chromium bath were summerized. The binaryalloy coatings characteristics and application were briefly introduced also. Chromium binary alloy electrodeposited from trivalent bath promisingly will have a wide application prospect in industry.