Influence of electron-beam processing mode on the sintering of alumina ceramics

Abstract

Abstract The article presents the results of electron beam sintering of alumina ceramic in the so-called forevacuum pressure range (5-20 Pa). Ceramic was irradiated by a focused electron beam generated by the forevacuum plasma electron source. Various modes of irradiation are considered without and with scanning of the electron on the ceramic surface. It is shown that using electron beam scanning increases the homogeneity of the sintered material. The modes of irradiation allowing to obtain dense ceramics with a homogeneous density distribution over its volume are given.