Application of Laser Ablation ICP Mass Spectrometry for Analysis of Oxide Particles on Cross Section of Alloys and Steels

Abstract

Some aspects for the application of Laser Ablation-Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) are considered and discussed from the viewpoint of the rapid analysis of oxide inclusions in metal samples. The inclusion characteristics in Fe-10% Ni alloy samples such as number, size and particle size distribution obtained by LA-ICP-MS method are compared with those from three-dimensional observation of particles on a film filter after electrolytic extraction. Though some limits had to be considered regarding to the content of soluble elements, the number and dispersion of analyzed inclusions in metal matrix, it was found that the LA-ICP-MS technique can be successfully applied for the rapid analysis of oxide inclusions containing Al2O3, MgO and others.

Inclusion characterisation – tool for measurement of steel cleanliness and process control: Part 1

“…Some common methods to estimate steel cleanliness are indirect methods that include total oxygen O T analysis, changes in slag composition or elemental fades/gains, clogging in submerged entry nozzles, and use of slag tracers. 1 Direct methods to evaluate steel cleanliness through inclusion characterisation in steel samples are techniques such as metallographic examination by scanning electron microscope (SEM) equipped with or without field emission gun, [2][3][4] laser techniques, 5,6 remelt button analysis technique, [7][8][9] optical emission spectrometry with pulse discrimination analysis (OES-PDA), [10][11][12] ultrasonic testing, [13][14][15] liquid metal cleanliness analyser, 16 electrolytic extraction, 17 confocal laser scanning microscope, 18,19 cathode luminescence microscope (CLM) 20 etc. Detailed reviews of steel cleanliness measurement techniques were presented by Zhang and Cai, 21 Zhang and Thomas, 22 Burty et al, 23 Jacobi and Wunnenberg 24 and Louis et al, 25 among others.…”

A Brief Overview of Metal Analysis in Alloys and Related Matrices: Some Classical Methods and Modern Spectroscopic Methods

“…Hoffmann et al 111 realizaram, através de otimizações instrumentais, determinações na faixa de concentração de ng L −1 para 23 elementos em ligas metálicas. Na mesma linha, LA-ICP-MS foi empregada para determinações de metais em moedas de Ag, 112 ligas de Fe, 113,114 Zn, 115 Mg, 116 Ni 117 e com vários elementos majoritários (Fe, Cu, Ni, Co e Al). 118 Utilizando a otimização de parâmetros como atmosfera gasosa, comprimento de onda do laser no UV, dimensão e número de pulsos para um arranjo de LIBS-LA-ICP-MS, limites de detecção de 0,2 (Mo), 0,3 (Mn) e 0,1% (Cr e Ni) foram obtidos em ligas de Mg. 119 A grande vantagem desse arranjo é a possibilidade de se realizar simultaneamente um mapeamento qualitativo da composição do material pela técnica de LIBS e também a razão isotópica através de técnica de ICP-MS.…”

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

“…Karasev et al 12 described how oxide particles in alloys and steels were rapidly determined using LA-ICP-MS. The number, size and particle size distribution obtained using LA-ICP-MS were comparable to particles collected on a filter after electrolytic extraction.…”

“…Limits of detection for the analytes Al, Cu, Mn, Ni, Sn and V were in the range 26-88 ng L À1 and the method was validated using spike/recovery experiments, with recoveries in the range 88-113% being obtained. De Souza et al determined several (12) analytes in lubricant oil, residual fuel oil and biodiesel using ICP-OES as a means of detection. 73 Samples were diluted using xylene and then an evaluation of two different m-nebulizer types, the PFA-100 and Miramist, was undertaken.…”