铜和铜合金材料及其制件,在储存和使用时往往极易变色和锈蚀。尤其带有装饰性的铜制件,更不易保持其外观色泽;焊接铜件时,在焊缝或焊点的周围不可避免的因焊接温度引起难看的颜色变化;航空产品在长期封存中防止铜零件的变色,仍然是待解决的问题。目前均用含有苯骈三氮唑的各种防锈油、气相防锈纸和有机涂层来防止铜制件的变色和锈蚀。但在使用时,尤其有表面接触电阻要求的电器元件,将很难使用这些方法了。制造印刷电路用的铜箔用苯骈三氮唑防锈时,会影响 Copper and copper alloy materials and their parts are often easily discolored and tarnished when stored and used. Especially with decorative pieces of copper, the more difficult to maintain its appearance and color; welding copper parts, welding seam or weld around the inevitable due to the welding temperature caused by ugly color changes; aviation products in the long-term storage to prevent copper Part discoloration is still a problem to be solved. At present, all kinds of anti-rust oil containing benzodiazepine, gas-phase rust-proof paper and organic coating are used to prevent discoloration and corrosion of copper parts. However, in use, especially those with electrical contact resistance requirements of the surface, it will be difficult to use these methods. Printed circuit used in copper foil with benzotriazole rust, it will affect