部件的涂层是使表面具有耐蚀性、耐磨性、导热性和导电性等性能的一个重要措施。除保证对功能参数的特殊要求外,由于经济缘故,特别是对贵金属涂层,要求最薄的厚度,因此需要测量其厚度。对此,采用涂层厚度测量法有利于保证质量,以及提高经济效益。由于为数众多的各种镀层一基体的组合和涂层厚度的不同测量,这样只用一台测量仪或 Component coating is to make the surface corrosion resistance, wear resistance, thermal conductivity and electrical conductivity and other properties of an important measure. In addition to guaranteeing the special requirements for the functional parameters, the thickness is required due to economic reasons, especially for the noble metal coating, which requires the thinnest thickness. In this regard, the use of coating thickness measurement is conducive to ensuring quality, as well as improve economic efficiency. Due to the large number of different coating a substrate combination and coating thickness of the different measurements, so that only a measuring instrument or