常见彩色18K金首饰成分及硬度研究  

Research on composition and hardness of common colored 18 Karat gold jewelries

作　　者：李桂华 燕菲[1] 山广祺 马霄 唐莹[1] 刘雪松 孙永军[3] 祝培明 LI Gui-hua;YAN Fei;Shan Guang-qi;MA Xiao;TANG Ying;LIU Xue-song;SUN Yong-jun;ZHU Pei-ming(Shandong Provincial Key Laboratory of Metrology and Measurement,Shandong Institute of Metrology,Jinan 250014,China;National Gold&Diamond Testing Center,Jinan 250014,China;Jinan Rail Transit Group Co.Ltd.,Jinan 250101,China)

机构地区：[1]山东省计量科学研究院山东省计量检测重点实验室,济南250014 [2]国家黄金钻石制品质量监督检验中心,济南250014 [3]济南轨道交通集团有限公司,济南250101

出　　处：《贵金属》2022年第S01期176-182,共7页Precious Metals

基　　金：山东计量测试学会科技项目(2021KJ12);山东计量测试学会科技项目(2020KJ09)。

摘　　要：采用X射线荧光光谱法(XRF)、火试金法和显微硬度仪对常见彩色18K金首饰的成分和硬度进行了检测。研究发现,常见彩色18K金首饰含金量主要在75.1%~75.5%范围内,红色18K金补口成分较单一,铜含量范围在19%~24.8%,黄色和白色18K金补口成分种类较多,同时发现一种含铟电铸工艺的黄色18K金。所测红色、黄色和白色18K金首饰的硬度范围分别为:190~290、130~260和153~243,同款式、形状相似的18K金首饰硬度呈现含镍白色18K金>红色18K金>黄色18K金的规律,源于不同的加工方法及补口元素对金不同的强化效果。The composition and hardness of common colored 18 Karat gold were tested by X-ray fluorescence spectrometry(XRF),fire assay and microhardness tester.The study found that the gold content of common colored 18 Karat gold jewelry is mainly in the range of 75.1~75.5%.The composition of red 18Karat gold is relatively single,and its copper content is in the range of 19~24.8%.The composition types of yellow and white 18 Karat gold are fairly more.A new-type yellow 18 Karat gold with indium produced by electroforming is discovered.The hardness ranges of red,yellow and white 18 Karat gold jewelry are 190~290,130~260 and 153~243,respectively.Due to different processing methods and different strengthening effects of filling elements on gold,the hardness of colored 18 Karat gold jewelries with the same category and similar shape ranks in the following sequence:white 18 Karat gold with nickel>red 18Karat gold>yellow 18 Karat gold.

关 键 词：18K金 X射线荧光光谱法(XRF) 火试金法 硬度 

分 类 号：TG146.3[一般工业技术—材料科学与工程]