Induced Amorphization in Pyrographite by Radiation Using High Voltage Transmission Electron Microscope

Abstract

A high dose of electron irradiation generates amorphous zones with critical vacancy concentrations in the pyrographite. The degree of disorder “” of amorphization of Graphite, natural graphite, pyrographite and polycrystal pyrographite are analyzed as a function of time “t”, and the amorphization kinetics under different voltages inside the HVTEM.

TEM-HRTEM study on the dehydration process of nanostructured Mg–Ca hydroxide into Mg–Ca oxide

“…1e). This loss of crystallinity occurs under the electron beam at both high and low flounce rates [51], due to radiation in high doses of which could generate amorphous zones with critical concentration of vacancies in the material [5].…”

“…Radiation alters the physical properties of materials such as electro-conductivity, deformation, mechanical properties, etc. [5]. During the radiation, vacancies and interstitial atoms are grouped to form secondary defects such as clusters, dislocation loops and pores [5].…”

“…[5]. During the radiation, vacancies and interstitial atoms are grouped to form secondary defects such as clusters, dislocation loops and pores [5]. Although High-Resolution Transmission Electron Microscopy (HRTEM) is primarily a technique for studying bulk defects, it has been applied in the profile-imaging mode to derive information about surfaces [6].…”