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Preparation of Dense Nanocrystalline Silicon Carbide Ceramics by Sinter Forging in the Presence of a Liquid Phase
Author(s) -
Wetzel K.,
Rixecker G.,
Kaiser G.,
Aldinger F.
Publication year - 2005
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200500009
Subject(s) - materials science , nanocrystalline material , forging , silicon carbide , ceramic , metallurgy , grain growth , sintering , carbide , pressing , hot pressing , phase (matter) , composite material , grain size , nanotechnology , chemistry , organic chemistry
Dense SiC materials from ultrafine starting powders may be obtained with very limited grain growth if uniaxial hot pressing with concurrent lateral flow of the sample is applied. This process, termed sinter forging, allows to decouple the kinetics of densification and grain growth owing to the elimination of the largest and most persistent population of pores by viscous deformation under the action of shear forces.