(1. 上海交通大學(xué) 教育部高溫材料及高溫測試開放實(shí)驗(yàn)室，
上海 200030；
2. 太原重型機(jī)械學(xué)院 材料分院， 太原 030024)
摘 要: 以Au， Ag， Cu， Pt， Al， Zn， Mn和Ti 8種純金屬為研究對象， 采用CIE LAB均勻色空間中的明度指數(shù)L*和色品指數(shù)a*， b*定量描述金屬的顏色； 運(yùn)用固體物理學(xué)和色度學(xué)的基本理論， 研究了純金屬顏色的物理計(jì)算方法、 可見光區(qū)域光學(xué)常數(shù)， 計(jì)算了純金屬的色度指數(shù)。金屬顏色的計(jì)算結(jié)果和測量結(jié)果的對比表明， 采用物理方法計(jì)算金屬的色品， 避免了由于樣品制備和顏色測量等因素帶來的種種誤差。 給出了8種純金屬顏色間的細(xì)微差別， 并就金屬顏色的起因進(jìn)行了初步探討。
關(guān)鍵字: 金屬； 顏色； 色度
（1. Open Laboratory Of the Ministry of Education for High Temperature Materials and Testing,
Shanghai Jiaotong University, Shanghai 200030, China;
2. Taiyuan Heavy Machinery Institute, Taiyuan 030024, China）
Abstract:Using CIE LAB color system, the metal color was described by lightness index L* and chromatic indexes such as a* and b*. The theories of solid physics and chromatics were introduced into the color calculation of chromaticity. Based on the optical constants, the reflectivity and color of eight pure metals such as Au, Ag, Cu, Pt, Al, Zn, Mn, and Ti were computed theoretically. Then, the calculated colors were compared with the measured ones. The results show that the calculated chromatic indexes are convincible because the physical calculation can avoid the errors from the color measurement and the sample condition such as roughness and oxidation. The color differences of eight metals and the origin of the metal color were also illustrated.
Key words: metal; color; chromaticity
