(1. 上海交通大学 教育部高温材料及高温测试开放实验室， 上海 200030；
2. 太原重型机械学院， 太原 030024;
3. 上海欣品线材有限公司， 上海 200030)
摘 要: 采用CIE LAB表色系统，用明度L *、色品 a *和b *描述合金的颜色。通过分光光度计定量地测定了Cu-Zn二元黄铜的色度参数，探讨了L *，a *，b *和C *随Zn含量的变化规律，给出了常用二元黄铜表面色的定量定性结果。研究表明，Cu-Zn二元合金的色度参数a*和b*值可以通过数学公式模拟计算，从而预计二元黄铜的表面色。
关键字: Cu-Zn； 黄铜； 颜色； 色度
（1. Open Lab of the Ministry of Education for High Temperature
Materials and Testing， Shanghai Jiaotong University， Shanghai 200030， P.R.China;
2. Taiyuan Heavy Machinery Institute， Taiyuan 030024, P.R.China;
3. Shanghai Xinpin Linear Products Co. Ltd.， Shanghai 200030, P.R.China）
Abstract:The color characteristics of Cu-Zn binary alloys were investigated quantitatively. Using CIE LAB color system，the surface color of the alloy was described by chromaticity parameters L *，a * and b *，which were measured by the spectrophotometer. The changing law of color parameters (L *，a *，b * and C *) with Zn content was demonstrated. Therefore，the surface colors of some standard CuZn binary alloys were given. The results show that a * and b * values are changed with Zn content abiding by the polynomial equation so that the surface color of the Cu-Zn alloy system can be forecast.
Key words: Cu-Zn；brass；color；chromaticity
