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Consolidation of Nanostructured β‐SiC by Spark Plasma Sintering
Author(s) -
Yamamoto Takeshi,
Kitaura Hidetoshi,
Kodera Yasuhiro,
Ishii Takashi,
Ohyanagi Manshi,
Munir Zuhair A.
Publication year - 2004
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.1551-2916.2004.01436.x
Subject(s) - spark plasma sintering , crystallite , materials science , ball mill , sintering , agglomerate , transmission electron microscopy , grain size , composite material , relative density , diffraction , metallurgy , nanotechnology , optics , physics
Nanostructured β‐SiC, with crystallite size in the range of 5–20 nm in agglomerates of 50–150 nm, was formed by reactive high‐energy ball milling and consolidated to a relative density of 98% by sintering at 1700°C without the use of additives. X‐ray line broadening analysis gave a crystallite size of 25 nm, while transmission electron microscopy observations showed the crystallite size to be in the range of 30–50 nm. Evidence demonstrating the role of a disorder–order transformation in the densification process is provided by changes in the diffraction peak patterns and in the integral width with temperature.