Characterization of Inclusion Type in Steel by Laser-Induced Breakdown Spectroscopy
10.11895/j.issn.0253-3820.140553
- VernacularTitle:激光诱导击穿光谱法对钢中夹杂物类型的表征
- Author:
Chun YANG
;
Yunhai JIA
;
Jiwen CHEN
;
Dongling LI
;
Jia LIU
;
Yong ZHANG
- Publication Type:Journal Article
- Keywords:
Laser-induced breakdown spectroscopy;
Surface micro-analysis;
Inclusion
- From:
Chinese Journal of Analytical Chemistry
2014;(11):1623-1628
- CountryChina
- Language:Chinese
-
Abstract:
ScanningElectronMicroscopy/EnergyDispersionSpectrum(SEM/EDS),ElectronProbe Microanalysis ( EPMA ) and Optical Microscopy ( OM ) are the traditional methods for inclusion type identifying at present. The disadvantages such as inconvenient sample preprocessing, low sensitivity and time consuming limited their application. Laser-Induced Breakdown Spectroscopy ( LIBS) is not only performing in bulk analysis field but also in elemental distribution and depth profile information field, so it causes great concern in material science. In this paper, 34CrNiMo6 steel and heavy railway steel samples were analyzed by LIBS in scanning mode to characterize the inclusion type. For 34CrNiMo6 steel, 2D intensity distribution and channel combination revealed the spectra line intensity of Mn and S were abnormal high simultaneously at some region, which indicated there were some MnS inclusion existed in these samples. And for heavy railway steel, 2D distribution and channel combination revealed the spectra line intensity of Si, Ca, Mg and Al were abnormal high simultaneously at some region, showed the existence of Si-Al-Ca-Mg inclusion in these samples. The SEM/EDS analysis result of above-mentioned samples showed agreed well with LIBS.
