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Abstract:
Directional SiC/Cu-Si composite with co-continuous microstructure was fabricated via spontaneous infiltration of Cu-24 at%Si alloy into a directional porous SiC ceramic produced by a high temperature recrystallization process. The initial continuous microstructure of the directional porous SiC ceramic after spontaneous infiltration can be maintained and the as-fabricated SiC/Cu-Si composite exhibits significant thermophysical anisotropy, with higher thermal conductivity (TC) and lower coefficients of thermal expansion (CTE) in the axial direction. Furthermore, the extent of TC anisotropy can also be significantly affected by the test temperature besides microstructural anisotropy. The higher the test temperature is, the lesser the anisotropy degree of TC becomes. This can be attributed to the varying TC ratio of the SiC to the Cu-Si alloy with increased temperature. In contrast, the temperature has minor effect on the anisotropy of CTE. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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Source :
CERAMICS INTERNATIONAL
ISSN: 0272-8842
Year: 2016
Issue: 1
Volume: 42
Page: 996-1001
2 . 9 8 6
JCR@2016
4 . 5 2 7
JCR@2020
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:239
JCR Journal Grade:2
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 15
SCOPUS Cited Count: 21
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 15
Affiliated Colleges: