Investigation of Color Change in Cu-Zn Alloys by Reflectivity and Color Difference Analysis
Investigation of Color Change in Cu-Zn Alloys by Reflectivity and Color Difference Analysis
复制标题
通过反射率和色差分析研究铜锌合金的颜色变化
DOI：
10.3365/kjmm.2018.56.3.171
复制
发表时间：
2018
影响因子：
1.2
通讯作者：
K. B. Kim
中科院分区：
文献类型：
--
作者：
Y. Jeong;S. Hong;H. Park;Young Seok Kim;J. Kim;HooDam Lee;Yun Jung Hwang;Young Hoon Lee;K. B. Kim
研究了调节 Zn 含量时 Cu-Zn 合金反射率的变化。将所制备合金的反射率与纯铜进行比较，并将其分为蓝色、绿色、黄色和红色对应的波长区域。随着Zn含量的增加，黄色区域的反射率差异增大，而红色区域的反射率差异减小。为了确定色差，使用反射率-三刺激值转换方程将测得的合金反射率转换为三刺激值。然后将三重值转换为 CIE L*a*b* 颜色空间。使用转换后的L*a*b*值的色差公式计算色差。当添加5at%Zn时，色差值为3.224，并且随着Zn含量的增加而增加。随着绿色和黄色区域的反射率差异增大，合金的b*值增大，而合金的a*值减小。在这项研究中，在铜合金中添加锌含量会引起绿色和黄色波长区域反射率的变化，从而影响α-Cu固溶体合金的色差。 （2017年11月1日接收；2017年12月27日接受）
The change in reflectivity of Cu-Zn alloys was investigated with the modulation of Zn content. The reflectivity of the prepared alloys were compared with pure copper and divided into wavelength regions corresponding to blue, green, yellow, and red colors. As the amounts of Zn increased, the difference in reflectivity of the yellow region increased, and that of the red region decreased. To determine the color difference, the measured reflectivity of the alloys was transformed into a tristimulus value using the Reflectance-Tristimulus value converting equation. Then the tristmulus value was converted into the CIE L*a*b* color space. The color difference was calculated using the color difference formula of the converted L* a*b* values. When 5 at%Zn was added, the color difference value was 3.224, and it increased with increasing Zn content. As the difference in the reflectivity of the green and yellow regions increased, the b* value of the alloys increased and the a* value of the alloys decreased. In this study, the addition of Zn content to Cu alloy induced changes in the reflectivity of the green and yellow wavelength regions, which influences color differences of α-Cu solid solution alloys. (Received November 1, 2017; Accepted December 27, 2017)