Open AccessThermal/mechanical properties of short carbon fibre/SiC co‐reinforced graphite matrix composites produced by low temperature hot pressing
Author(s) -
Han Yongjun,
Yan Qingzhi,
Li Xianhui
Publication year - 2015
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2015.0004
Subject(s) - materials science , graphite , composite material , hot pressing , flexural strength , silicon carbide , pressing , perpendicular , carbon fibers , thermal conductivity , composite number , geometry , mathematics
Short carbon fibre and silicon carbide (SiC) co‐reinforced graphite matrix composites were prepared with natural flaky graphite as raw materials by low temperature hot pressing at 1900°C. The flexural strength in the direction perpendicular to the graphite layers reached 221 MPa for carbon fibre of 5 vol% and SiC of 30 vol%, which was an improvement of 275% compared with pure graphite materials. The composites improved the bend strength of the block obviously, while maintaining the thermal conductivity of 220 W/m K in the direction perpendicular to the hot pressing. The new process has the advantages of being a non‐pitch binder process which avoids the high temperature graphitisation operation.