不锈钢表面真空蒸镀铜合金仿金薄膜

Gold-imitation copper alloy thin film prepared by vacuum evaporation on stainless steel

为了解决目前电镀技术制备铜合金仿金薄膜时"三废"对环境的污染,采用"真空蒸镀+退火"工艺,以黄铜和铝青铜为靶材,在304不锈钢基片上制备铜合金仿金薄膜。通过电子比色卡和比色软件对薄膜表面色泽进行分析,以正交试验研究了真空度、退火温度、两种铜合金的质量份数对所制薄膜色泽的影响。结果表明,退火温度对仿金薄膜成色影响显著。制备仿金铜合金薄膜的最佳工艺条件为:真空室气压7×10-3 Pa,黄铜与铝青铜的质量份数比10∶1,退火温度410°C。所得膜层的颜色可与16K-24K黄金相媲美。

To reduce the environment pollution caused by wasted water, gases and solids during the electroplating process of gold-imitation copper alloy coatings on 304-type stainless steel substrate, the vacuum evaporation with brass and aluminum bronze as targets and annealing technologies were adopted. The color and luster of the gold-imitation thin films prepared were analyzed using electronic color cards and colorimetry software, and their dependence on vacuum degree, annealing temperature and mass ratio of the two copper alloys were studied by orthogonal test. The results showed that annealing temperature has a great effect on the color of gold-imitation thin films. The optimal process conditions for preparing gold-imitation copper alloy thin films are： pressure of vacuum chamber 7×10^-3 Pa, mass ratio of brass to aluminum bronze 10：1 and annealing temperature 410 °C. The color of the thin films obtained thereunder is comparable with that of 16 K to 24 K gold.