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arxiv 1402.6507 v1 pith:NEJZ5BWS submitted 2014-02-26 cond-mat.mtrl-sci cond-mat.mes-hall

EPR measurements of ceramic cores used in the aircraft industry

classification cond-mat.mtrl-sci cond-mat.mes-hall
keywords spectrawereceramiccoresgrainsmeasurementssizetemperature
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In this work the electron paramagnetic resonance (EPR) spectra of Al2O3 and ZrO2 powders were measured for different size of grains (0.074, 0.044 mm) as well as the mullites (0.07 and 0.12 mm). Also were investigated the ceramic cores. The measurements were performed at room temperature and in the temperature range from 140 up to 380 K. The main purpose of this work was to investigate the possible relationships between the EPR spectra and the size of powder grains as well as the identification of EPR spectra in view of the potential application of EPR technique as a fingerprinting method.

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