Premium
Densification and Grain Growth of Porous Alumina Compacts
Author(s) -
Kwon Young S.,
Son Geonseog,
Suh Jeong,
Kim Kitae T.
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb04561.x
Subject(s) - materials science , sintering , grain growth , constitutive equation , porosity , hydrostatic equilibrium , pressing , metallurgy , grain size , composite material , forging , hot pressing , thermodynamics , finite element method , physics , quantum mechanics
Densification and grain growth of porous alumina compacts during various high‐temperature processes were investigated. Experimental data were obtained for densification and grain growth of alumina powder during hot pressing. A set of constitutive equations was proposed based on the constitutive equations by Helle et al. 1 for hydrostatic response and by Rahaman et al. 2 for deviatoric response. Theoretical results from the proposed constitutive equations were compared with various experimental data for alumina powder compacts in the literature, including pressureless sintering, sinter forging, and hot pressing. The proposed model well predicts the densification and grain growth of alumina compacts.