Combination of laser-induced breakdown spectroscopy, and time–of–flight mass spectrometry for the quantification of CoCrFeNiMo high entropy alloys

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

“…The techniques of XRD (for crystal structure), SEM and FTIR were also used for characterisation. The TOF-SIMS results showed the presence of over-lithiated grains of diameter 400 ± 100 nm and nanoparticles of diameter 100 ± 30 nm with an increased 7 Li 16 O + content in the buried part of the lm. It was thought that these Li-rich areas could possibly be used as Li reservoirs to compensate for lithium losses during fabrication and cell operation.…”

“…Use of the multiple charged Al 3+ as an internal standard yielded signicant improvements in accuracy compared with the multiple charged Si ions. The mechanism of why the different Si ions have such an effect was then investigated by using 16 O + as an internal standard, with the O originating both from the sample and from the primary ion beam. Two very distinct calibrations were achieved for the two sample types which led the authors to conclude that the sputter yield (i.e.…”

“…56 The impurities Cl, P, S and Si were determined in the digests using ICP-MS/MS using nitrous oxide as the reaction gas. The Cl was determined as 35 Cl 14 N + at m/z 49, the P was determined as 31 P 16 O + at m/z 47, S was determined as 32 S 14 N + at m/z 46 and Si was determined as 28 Si 16 O + at m/z 44. Since all analytes were measured at a significantly higher mass than their isotopes, the sensitivity and their LOD were improved signicantly.…”

“…Calibration-free LIBS and calibration curve LIBS were compared with LA-TOF-MS and energy dispersive spectrometry for the analysis off high energy alloys (CoFeNiMo-based materials). 16 Several different compounds were made in-house and the methodology used for this was described in detail. The LIBS experiments were undertaken using a Nd:YAG laser operating at a 532 nm, with an energy of 100 mJ per pulse.…”

Catching up on calibration-free LIBS

“…Ahmed et al 60 used CF-LIBS for the quality control of alloys, by comparing it with ICP-MS in the study of an iron-copper alloy. Fayyaz et al 61 compared CF-LIBS and LA-TOF-MS for the quantification of a high-entropy CoCrFeNiMo alloy.…”