单火花分析法(Spark-DAT)有时用于替代或完善传统的夹杂物分析技术,有时用于评价元素可溶(或不可溶)部分的含量,或者用于替代抗疲劳性能试验。近来,Spark-DAT的一些发展不但引起了钢铁工业,也引起了铝工业的关注。本文介绍了使用Spark-DAT分析夹杂物的基本原理,并讨论了其相应算法的改进,及进行铁基体和铝基体样品中夹杂物分析的改进。 Spark-DAT is sometimes used to replace or refine traditional inclusion analysis techniques and is sometimes used to evaluate the content of soluble (or insoluble) parts of elements or to replace fatigue-resistance tests. Recently, some developments in Spark-DAT have caused not only the steel industry but also the aluminum industry. This paper introduces the basic principle of using Spark-DAT to analyze inclusions, discusses the improvement of the corresponding algorithm, and improves the analysis of inclusions in iron matrix and aluminum matrix samples.