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为了改善基体的性能,提高耐磨、耐腐蚀力及外观精饰,通常在基体上涂复、镀复一层至几层某些材料来实现上述目的。在实施过程中经常要了解、测试、分析、验证涂复、镀复膜层材料的厚度、牢固度及材质等。对涂复、镀复层厚度的测量采用破坏涂、镀复层测厚度和不破坏涂、镀复层测厚度的方法。那么选择哪种方法,用哪类仪器呢?据了解当前尚没有一种通用的万能的测厚仪,目前流行的可以分为八类测量层厚的仪器,现简述如下,供选择测厚仪时考虑。 1.电磁感应技术—适用于非磁性材料在铁基板上的厚度测量。比如,欲在铁基板上涂镀铬、铜、锌、镉及油漆,可用此法。但是,值得注意的是此法不能测量在铁基板上涂镀镍、钴层厚。因为镍钴具有弱磁性,不是非磁性材料。
In order to improve the performance of the substrate, improve wear resistance, corrosion resistance and appearance of decoration, usually coated on the substrate, the coating layer to several layers of certain materials to achieve the above objectives. Often in the implementation process to understand, test, analysis, verification coating, coating the thickness of the coating material, firmness and material. On the coating, coating thickness measurement using destructive coating, coating thickness measurement and does not undermine the coating, coating layer thickness measurement method. So which method to choose, with what kind of equipment? It is understood that there is no universal universal thickness gauge, the current popular can be divided into eight types of measuring layer thickness of the instrument, are summarized as follows, for the selection of thickness When the instrument is considered. 1. Electromagnetic induction technology - suitable for non-magnetic materials in the thickness of the iron substrate measurement. For example, if you want to apply chromium, copper, zinc, cadmium and paint on the iron substrate, you can use this method. However, it is worth noting that this method can not measure the thickness of nickel and cobalt layers on iron substrates. Because nickel and cobalt are weak magnetic, not non-magnetic material.