激光等离子体光谱法用于测量硬质合金中钴含量  

Determination of Cobalt Concentration in Hard Alloy Using Laser-Induced Plasma Spectroscopy

作　　者：李静[1] 张鉴秋[1] 李胜利[2] 

机构地区：[1]中国科学技术大学精密机械与精密仪器系光电技术实验室,安徽合肥230027 [2]暨南大学生物医学工程系,广东广州510632

出　　处：《光谱学与光谱分析》2006年第12期2323-2325,共3页Spectroscopy and Spectral Analysis

基　　金：'973'国家安全重大基础研究项目(51328);中国科学技术大学青年基金项目资助

摘　　要：以Nd∶YAG调Q固体激光器为激发光源,YG系列硬质合金为样品在建立的实验装置上对钴的谱线进行了测量。实验显示钴的345.35 nm灵敏线强度随功率密度变化呈抛物形变化趋势,当功率密度大于1.2×108W.cm-2时谱线强度较强并且离散度较小。对YG系列硬质合金中钴含量的测定表明,钴的浓度与其谱线强度成很好的线性关系,测量的浓度最大相对误差为5.08%,测量结果可靠、具有较高的准确度。The cobalt spectrum measurement was conducted with the experiment setup including a Nd ： YAG Qswitched solid laser as the exciting light, and YG hard alloy as the sample. Experiments show that the 345.35 nrn sensitive spectral line intensity of Co in YG3 demonstrates a parabola trend with the increase in power density, and as the power density exceeds 1.2× 10^8 W · cm^-2 , the spectrum intensity becomes stronger, and its deflection becomes less. The experiments on measuring Co concentration in YG hard alloy series show that the concentration of cobalt has a good linear relationship with its spectral intensity, the maximum relative error of measurement is 5. 08%, and the result is reliable with higher precision.

关 键 词：激光等离子体光谱技术 YG系列硬质合金 钴 

分 类 号：O657.3[理学—分析化学]