EPR measurements of ceramic cores used in the aircraft industry

TL;DR

This study investigates the electron paramagnetic resonance spectra of ceramic powders and cores used in the aircraft industry, aiming to relate spectral features to grain size and explore EPR as a fingerprinting tool.

Contribution

It provides new insights into the EPR spectral characteristics of ceramic materials and their dependence on grain size, supporting potential applications in material identification.

Findings

EPR spectra vary with grain size and material composition

Identification of characteristic EPR signatures for different ceramics

Potential use of EPR as a fingerprinting method for ceramic materials

Abstract

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.