MECHANISMS OF INITIAL SINTERING OF A FINE ALUMINA POWDER

S. Raman , R. Doremus , R. German

The mechanism of initial sintering of alumina was explored by electron microscopy and X-ray diffraction. The transformation of gamma to alpha alumina influenced sintering behavior. This transformation appears to involve plastic deformation in the alumina. Sintering of fine alpha alumina powder directly occurs with an activation energy close to that of grain boundary diffusion of oxygen.

Domains: Physics archives

S. Raman, R. Doremus, R. German. MECHANISMS OF INITIAL SINTERING OF A FINE ALUMINA POWDER. Journal de Physique Colloques, 1986, 47 (C1), pp.C1-225-C1-230. ⟨10.1051/jphyscol:1986133⟩. ⟨jpa-00225562⟩