用激光诱导分解光谱学精确向分析方法,对金属材料中的非金属含有物进行多式特征化方法
Xiaofen Zhang1, Yunhai Jia2, Liang Sheng3
1School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Central Iron and Steel Research Institute, Beijing, 100081, China.
Analytica chimica acta
|October 30, 2025
概括
一种新的激光诱导分解光谱法 (LIBS) 方法使得金属中非金属含有物的精确,独立分析成为可能. 这种技术可以改善材料的特性和质量评估,从而提高材料的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 非金属含有物影响金属的特性,需要准确的表征.
- 激光诱导分解光谱 (LIBS) 提供快速分析,但由于缺少标准样本,缺乏独立测量能力.
- 目前的LIBS方法通常需要与SEM-EDS和统计分析相结合.
研究的目的:
- 开发精确准的LIBS方法论,用于包含化学成分和微观结构的多式特征.
- 为了使金属材料中非金属含有物的独立和高通量分析.
主要方法:
- 开发了一个3D高精度运动平台和显微镜成像系统,用于精确的LIBS准.
- 优化了实验条件 (显微镜-LIBS距离,激发模式) 以提高光谱质量和检测极限.
- 准备的单变钢矩阵标准样本,含有可控含量,用于定量分析.
主要成果:
- 建立了关键元素 (Mn,Al,Ca,Mg,Ti,Si) 的度-光谱强度校准曲线.
- 使用扫描电子显微镜-能量分散光谱法 (SEM-EDS) 验证的LIBS结果.
- 与无定向扫描相比,分析效率和吞吐量有所提高.
结论:
- 精确准的LIBS方法克服了用于包含分析的无定向扫描的局限性.
- 允许在大型样本中对非金属含有物进行高通量表征.
- 为复杂的包含识别和清洁性评估提供了有效的手段,有助于材料属性研究.
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