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Determination of E2 for nitride ceramics using FE-SEM and the Duane-Hunt limit procedure
1Metals and Materials Engineering Department, McGill University, 3610 University Street, Montreal, Quebec H3A 2B2, Canada.
Abstract:
This work demonstrates the possibility of using the Duane-Hunt limit of the bremsstrahlung to determine E2 values of Si3N4 and AlN ceramics. The E(DHL) versus E0 graph demonstrates that for conductive materials, the experimental curve is parallel to the theoretical (E(DHL) = E0), but both curves cross in the case of insulators. The intersection points (E2 value), are 3.01 keV for Si3N4 and 2.67 keV for AlN. Imaging of ceramic grain structure at high magnification was performed to demonstrate the validity of the calculated E2 values.
