Austenitemeter – Mössbauer spectrometer for rapid determination of residual austenite in steels
| Autor: | Jiri Pechousek, Jakub Navarik, Josef Kašlík, Petr Novak, Lukas Kouril |
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| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Austenite Accuracy and precision Materials science Spectrometer Applied Mathematics 020208 electrical & electronic engineering 010401 analytical chemistry Analytical chemistry 02 engineering and technology Condensed Matter Physics Residual 01 natural sciences Noise (electronics) Spectral line 0104 chemical sciences Mössbauer spectroscopy 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Instrumentation |
| Zdroj: | Measurement. 131:671-676 |
| ISSN: | 0263-2241 |
| DOI: | 10.1016/j.measurement.2018.09.028 |
| Popis: | In this note we describe an application of backscattering 57Fe Mossbauer spectroscopy for determination of the austenite content in steels, where the surface analysed thickness is ∼20 µm. The method enables rapid determination of the residual austenite in the sample, i.e. within 10–20 min with a sufficient accuracy. Calculations using different f-factors for austenite and ferrites are also adopted. Standard regime of the analysis allows determining an austenite-to-ferrite ratio with a high precision after several hours or few days of measurement for laboratory research or quality control purposes. The method demonstrates high efficiency and more sensitive results of the analysis, i.e. compared with the XRD method. Statistical quality of the spectra which affects the measurement accuracy (±1%) with detection limit of rapid method (2–3% austenite) together with noise occurrence is evaluated. |
| Databáze: | OpenAIRE |
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