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对于钢中夹杂物的研究,目前大多数工作是采用光学显微镜测量抛光的钢样表面的方法实现的。今后若干年里,脉冲分布解析原子发射光谱法(PDA-OES)的分辩率有望得到提高,可以获得夹杂物的尺寸、颗粒数以及空间分布的信息。在应用电子探针微区分析(EPMA)或PDA-OES技术的自动监控过程中,是对抛光的钢表面进行扫描分析。虽然可以获得夹杂物的截面面积及其边界信息,但是这些夹杂物形状的成因却不明显。由于夹杂物的形状和表面特性可以揭示出某类夹杂物的形成过程,因此获知夹杂物的形成过程就可以得到夹杂物的形成、生长和演变等相关信息。本文的目的就是研究钢中夹杂物分析中SEM/EDS技术和OES/PDA技术的相关性。应用PDA-OES技术对不锈钢及碳钢中夹杂物进行了定性分析。在此基础上,通过峰高和峰强度与参考物质的比较,将有望实现对夹杂物的半定量或定量分析。
For the study of inclusions in steel, most of the current work is to use optical microscopy method to measure the polished steel surface. In the next few years, the resolution of pulsed-distributed analytical atomic emission spectrometry (PDA-OES) is expected to increase, allowing for the size, number of particles and spatial distribution of inclusions to be obtained. In automated monitoring using EPMA or PDA-OES technology, the polished steel surface is scanned. Although the cross-sectional area of inclusions and their boundary information can be obtained, the causes of the shape of these inclusions are not obvious. Because the shape and surface properties of inclusions can reveal the formation of certain types of inclusions, we know that the formation of inclusions, the growth and evolution of inclusions can be obtained by knowing the formation process of inclusions. The purpose of this paper is to investigate the correlation between SEM / EDS and OES / PDA techniques in the analysis of inclusions in steel. The qualitative analysis of inclusions in stainless steel and carbon steel was performed using PDA-OES technology. On this basis, semi-quantitative or quantitative analysis of inclusions is expected to be achieved by comparing the peak heights and peak intensities with the reference materials.