Abstract：Traditional quantitative analysis methods of metal powders need to the process of chemical dissolution or melt pressing. In this paper, a laser-induced breakdown spectroscopy (LIBS) method for direct quantitative analysis of stainless steel powders without melting or chemical sample preparation is proposed. The effects of different sample preparation methods and laser ablation conditions on the quantitative analysis results in stainless steel powders were studied. It was found that the material of the sample mould had an important influence on the effect of sample preparation. The stability and accuracy of the analysis results were greatly improved by appropriate sample preparation pressure. At the same time, the choice of laser ablation times will also affect the stability of spectral signals. Basis on these studies, a sample preparation and quantitative analysis method for direct quantitative analysis of nine elements in stainless steel powder by LIBS were established. The analysis results of Mo, Si, W, Ni, Mn, Cr and Co have good consistency with the results obtained by the corresponding element reference value of chemical analysis.
刘宗鑫，沈学静，李冬玲，刘 佳. 基于激光诱导击穿光谱法的不锈钢粉末直接测定方法研究[J]. 粉末冶金工业, 2020, 30(02): 35-40.
LIU Zong-xin， SHEN Xue-jing， LI Dong-ling， LIU Jia. Study on sampling method for direct quantitative analysis of multi-element in stainless steel powders. Powder Metallurgy Industry, 2020, 30(02): 35-40.
2020, Vol. 30 
