Talks and Poster Presentations (with Proceedings-Entry):
M. Bonta, A. Cakara, P.H. Mayrhofer, A. Limbeck:
"Quantitative analysis of Mo, Si and B in oxidation resistant coatings";
Talk: 18. Tagung Festkörperanalytik,
Wien;
07-06-2015
- 07-08-2015; in: "Kurzfassungen",
(2015),
51.
English abstract:
Boron doped molybdenum silicide alloys show impressive oxidation resistance at high temperatures, as a protective borosilicate layer is formed, which acts as an oxygen diffusion barrier. The oxidation resistance of such Mo-Si-B layers is strongly influenced by the Si to B ratio in the system. Therefore, information about the exact composition of the coatings is required in order to control the production process and to ensure quality in application.
Here, we present a procedure for the direct analysis of coatings with varying Mo, Si and B content deposited on Al2O3 substrates using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Quantification of LA-ICP-MS signals was performed using onepoint calibration, univariate calibration and multivariate calibration in the form of multiple linear regression, indicating that only the multiple linear regression model allows overcoming sample related matrix effects in LA-ICP-MS analysis.
Keywords:
LA-ICP-MS, elemental analysis, oxidation resistant coatings
Created from the Publication Database of the Vienna University of Technology.