On-Line X-Ray Fluorescence Spectrometer for Coating Thickness Measurements

Abstract

The principles and techniques for performing coating thickness measurements in the laboratory and on-line using nuclear radiation have been established for tin or zinc coated steels. Recently, additional engineering efforts have been made toward the development of new coating substances consisting of complex layered materials. For example, zinc-iron alloy metal has higher corrosion resistance than pure zinc-coated steel sheets and evaluations have been made of beneficial characteristics in automobile production processes, such as easy welding, good paintability, high efficiency for press plastics forming, etc.