高温高压法合成钻石的宝石学特征  

Gemmological Characteristic of HPHT Synthetic Diamonds

作　　者：朱红伟[1] 刘海彬[1,2] 程佑法 李建军[1,2] 王笃福 

机构地区：[1]国家黄金钻石制品质量监督检验中心,济南250014 [2]山东省计量科学研究院,济南250014 [3]济南中乌新材料有限公司,济南250014

出　　处：《超硬材料工程》2018年第1期61-66,共6页Superhard Material Engineering

摘　　要：采用宝石显微镜、红外光谱仪、X荧光光谱仪、紫外荧光灯、Diamond View^(TM)等对济南某公司生长的高温高压合成的黄色、无色、蓝色钻石样品进行详细地测试与分析。结果表明,高温高压合成钻石放大观察可见内部含有棒状、柱状、细小微粒状的金属包裹体,个别样品内部相对纯净,净度级别可达VS_1;红外吸收光谱测试显示,无色合成钻石为IIa型,黄色合成钻石为Ib型,蓝色合成钻石为IIb型。X荧光光谱测试显示所有钻石都具有强烈的铁峰,无色和蓝色合成钻石未检出镍,5号样品检测出铁和镍,6号样品检测除铁和镍外还有锰。无色和蓝色合成钻石在Diamond View^(TM)下具有蓝白色荧光,并具有磷光现象且发光时间可达60多秒;合成黄色钻石在Diamond View^(TM)下具有黄绿色荧光,无磷光现象。这些高温高压合成钻石都具有"黑十字"现象,并可见四边形生长环带。紫外-可见光分光光谱仪测试合成钻石,均未检测到415nm吸收线。Yellow,colorless,and blue HP HT synthetic diamonds from Jinan are tested by gem microscope,infrared spectroscopy,X-ray fluorescence spectrometer,ultraviolet fluorescent lamp and Diamond View TM......,etc.The results show that the HP HT synthetic diamonds have the rod-like,columnar,fine particles of metal inclusions,and some samples are pure with clarity grade of VS1 by gem microscope.By Infrared absorption spectra,the colorless synthetic diamonds are type IIa,yellow synthetic diamonds are type Ib,and blue synthetic diamonds are type IIb.By X-ray fluorescence spectra,all diamonds have a strong iron peak,the colorless and blue synthetic diamonds have no nickel peak;the nickel and iron peaks are detected in the fifth sample,and the iron,nickel,and manganese are detected in the the sixth sample.By the Diamond View TM,the colorless and blue HP HT synthetic diamonds have blue-white fluorescence and phosphorescence with the light emitting time of more than sixty seconds.Yellow synthetic diamond has yellow-green fluorescence without phosphorescence.These HP HT synthetic diamonds have a"dark cross"phenomenon,and quadrilateral growth zoning.The 415 nm absorption line is not detected by UV-Vis spectrophotometer for all synthetic diamond samples.

关 键 词：高温高压合成钻石 红外光谱 X荧光光谱 显微镜 DiamondViewTM 

分 类 号：TS933[轻工技术与工程]