Application to Thickness Measurement of Ceramic Sparying Coating Using Coating Thickness Meter

摘要

An electromagnetic flaw detection method has been mainly applied to the measurement of crack size in the metal substrates and coating thickness on the composite materials. As for the measurement of a surface coating thickness, essentially there are three types of measurement which micrometer microscope, micrometer caliper and coating thickness meter can be required in JIS. The experiment was done to study of the accuracy of coating thickness measurement using coating thickness meter.It is found experimentally that false coating thickness was generated by coating thickness meter for the measurement of ceramic coating thickness on stainless steel. But this study has not been any other reports yet. The main results are summarized as follows.False thickness is influenced by blasting time, blasting distance and so on, But, it is not due to nay surface roughnesses. It has been experimentally verified that false substrates were blasted with alumina grit materials.