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The kinetics of sp 3 to sp 2 structural conversion in tetrahedral amorphous carbon (ta-C) films induced by sample irradiation with an electron beam of transmission electron microscope was studied by systematically measuring the temporal evolution of the graphitic phase detected by electron energy loss spectroscopy (EELS). The results analyzed in the framework of the Johnson–Mehl–Avrami...
The formation and oxidation resistance of surface oxide layers formed on carbon-B 4 C-SiC composites with two different B 4 C-SiC ratios were investigated at elevated temperatures in dry and moist atmospheres. From SEM observation, X-ray diffraction analysis, EPMA, and ESCA measurements of the samples before and after oxidation, it was found that the oxidation resistance depended...
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