In:
Journal of Laser Applications, Laser Institute of America, Vol. 17, No. 3 ( 2005-08-01), p. 183-190
Abstract:
Spatially resolved information about the distribution and chemical composition of inclusions in steel are gained by scanning methods, such as scanning electron microscopy with energy dispersive X-ray spectroscopy, electron probe microanalysis or capillary-X-ray flourescence. Scanning laser-induced breakdown spectroscopy (LIBS) offers distinct advantages in contrast to these conventional methods. Sample polishing or high vacuum conditions are not necessary, a simple grinding of the sample is sufficient for the preparation. Analysing times can be reduced significantly. At Fraunhofer ILT a measuring system was developed enabling for the first time high-speed scanning LIBS with measuring frequencies of up to 1000 Hz. Sample surfaces with dimensions up to 110×45 mm2 can be analyzed. Light elements such as C, N, O, P, and S are detected, which is demonstrated by the identification of nonmetallic inclusions in steel. Principle, features and results of high-speed scanning LIBS with a spatial resolution & lt;20 μm are presented.
Type of Medium:
Online Resource
ISSN:
1042-346X
,
1938-1387
Language:
English
Publisher:
Laser Institute of America
Publication Date:
2005
detail.hit.zdb_id:
2084611-3
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