The mechanism of sample composition variation in the selective laser melting process based on the laser-induced breakdown spectroscopy and Raman system detection

文献情報

出版日 2023-11-21

DOI 10.1039/D3JA00293D

インパクトファクター 4.023

著者

Jingjun Lin, Yao Li, Xiaomei Lin, Changjin Che

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要旨

We jointly applied laser-induced breakdown spectroscopy (LIBS) and Raman spectroscopy to microscopically detect the unavoidable, harmful residual trace metal oxides in the parts manufactured by the selective laser melting (SLM) process. The elemental and molecular compositions of 316L stainless steel (316L SS) powder and SLM-made parts were examined, and the intensity-normalized LIBS information reflected the atomic and ionic content variations during the process. The normalized LIBS intensities of Ni I 357.18 nm, Cr I 461.61 nm, and Mo I 338.58 nm lines from the SLM parts were found to be decreased by approximately 21.82%, 15.96%, and 4.11%, respectively, compared to those from the 316L SS powder. In particular, the normalized intensities of Mn II 348.29 nm and Fe II 518.68 nm lines from the SLM parts were increased by approximately 60.19% and 25.56%, respectively, compared to those from the 316L SS powder. Raman spectroscopy results indicated the presence of Fe3O4 (676 cm−1) and α-Fe2O3 (500 cm−1 and 1300 cm−1) oxides in the SLM parts; however, these oxides were not observed in the raw 316L SS powder. These oxides may cause a decrease in the surface tension and wetting ability of the metal melt pool, and in severe cases, the metal powder in the melt pool may not fully melt and cause the spherification phenomenon.

掲載誌

Journal of Analytical Atomic Spectrometry

CiteScore: 6.2

自己引用率: 25.8%

年間論文数: 254

The Journal of Analytical Atomic Spectrometry (JAAS) is the central journal for publishing innovative research on fundamentals, instrumentation, and methods in the determination, speciation and isotopic analysis of (trace) elements within all fields of application. This includes, but is not restricted to, the most recent progress, developments and achievements in all forms of atomic and elemental detection, isotope ratio determination, molecular analysis, plasma-based analysis and X-ray techniques. The journal welcomes full papers, communications, technical notes, critical and tutorial review articles, editorials, and comments, in addition to the Atomic Spectrometry Updates (ASU) literature reviews that are prepared by an expert panel. Submissions are welcome in the following areas, but note this list reflects the current scope and authors are strongly encouraged to contact the Editorial team if they believe that their work offers potentially new and emerging research relevant to the journal remit: Fundamental studies in the following. New and existing sources for atomic emission, absorption, fluorescence and mass spectrometry and those that provide both atomic and molecular information Sample introduction techniques for solids, liquids, gases Improvements in sensitivity, selectivity, precision, accuracy and/or robustness Isotope ratio measurements, including techniques for improving precision and mass bias correction Single channel and multichannel simultaneous detection systems Chemometrics, statistics, calibration techniques and internal standardisation Theoretical and numerical modelling of fundamental processes related to all of the above methodologies Novel or improved methodologies in areas of application including, but not limited to the following. Biosciences, including elemental, speciation and isotopic analysis in biological systems, immunoassays based on metal-labeled antibodies, bio-imaging, and nanoparticle toxicology Geochemistry Environmental science Materials science, including engineered nanoparticles and quantum dots Metrology, including reference materials Forensic analysis Food and agricultural sciences Energy Archaeometry Molecular analysis. Molecular sources for elemental and isotopic analysis Atomic sources for molecular analysis Atomic and molecular techniques simultaneously used for complementary chemical information All contributions are judged on originality and quality of scientific content, and appropriateness of length to content of new science.