TY - JOUR
T1 - Fabrication and ultra-high-temperature properties of lightweight carbon-bonded carbon fiber composites
AU - Chen, Yanfei
AU - Zhao, Yunong
AU - Liu, Debao
AU - Tao, Ran
AU - Cheng, Tianbao
AU - Ai, Shigang
AU - Xu, Baosheng
AU - Yang, Yazheng
AU - Fang, Daining
N1 - Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Carbon bonded carbon fiber (CBCF) composites with different fiber volume fractions (FVFs) are prepared. This paper mainly investigates the effect of FVFs and the ultra-high temperature on the mechanical and thermal properties of CBCF composites. Experimental results show that the microstructure of CBCF composites is anisotropic, random distribution in xy direction and layering in z direction. With higher FVFs, the modulus and fracture strength are higher. The fracture strength in xy direction is greatly higher than that in z direction, because more fibers bear the load. Elastoplastic behavior of stress-strain curves is observed in z direction, which is attributed to the compression of porosity and gap. Especially, at ultra-high temperature, the plastic hardening effect is remarkable. In addition, the thermal conductivities of CBCF composites with different FVFs are characterized, which increase exponentially with temperature.
AB - Carbon bonded carbon fiber (CBCF) composites with different fiber volume fractions (FVFs) are prepared. This paper mainly investigates the effect of FVFs and the ultra-high temperature on the mechanical and thermal properties of CBCF composites. Experimental results show that the microstructure of CBCF composites is anisotropic, random distribution in xy direction and layering in z direction. With higher FVFs, the modulus and fracture strength are higher. The fracture strength in xy direction is greatly higher than that in z direction, because more fibers bear the load. Elastoplastic behavior of stress-strain curves is observed in z direction, which is attributed to the compression of porosity and gap. Especially, at ultra-high temperature, the plastic hardening effect is remarkable. In addition, the thermal conductivities of CBCF composites with different FVFs are characterized, which increase exponentially with temperature.
KW - CBCF composites
KW - Mechanical and thermal properties
KW - Ultra-high temperature
UR - http://www.scopus.com/inward/record.url?scp=85069683921&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2019.07.250
DO - 10.1016/j.ceramint.2019.07.250
M3 - Article
AN - SCOPUS:85069683921
SN - 0272-8842
VL - 45
SP - 22249
EP - 22252
JO - Ceramics International
JF - Ceramics International
IS - 17
ER -