CATHODE POLARIZATION IN TRIVALENT CHROMIUM PLATING

It is well known that trivalent chromium plating technology has many a dvantages. Although the technology has been applied in production, som e problems remain; for instance, the plated film cannot be thickened a t will and its glossiness lacks a bluish hue. Accordingly, these facto rs may, to some extent, prevent the technology from being further appl ied in industry. In order to elucidate the problems, the authors inves tigated the technology by using chemical and electrochemical methods, as well as XPS analysis, were successful and have drawn some useful co nclusions from the findings. The findings may be of great practical an d theoretical significance for further improvement of the new technolo gy, including improvement of the properties of the plated film and by extending the scope of application.