TY - JOUR
T1 - Fabrication of short carbon fibre reinforced SiC multilayer composites by tape casting
AU - Yang, W. S.
AU - Fuso, L.
AU - Biamino, S.
AU - VASQUEZ SANDOVAL, DREIDY MERCEDES
AU - Bolivar, C. Vega
AU - Fino, P.
AU - Badini, C.
PY - 2012/3/1
Y1 - 2012/3/1
N2 - Silicon carbide multilayer composites containing short carbon fibres (C sf/SiC) were prepared by tape casting and pressureless sintering. C fibres were dispersed in solvents and then mixed with SiC slurry to make green C sf/SiC tape. Triton X-100 was found to be the best one for Toho Tenax HTC124 fibres (with water soluble coating) among BYK-163, BYK-410, BYK-2150, BYK-9076, BYK-9077 and Triton X-100 dispersants. C sf/SiC multilayer composites containing 5 vol.% fibre (mean fibre length of 3, 4.5, and 6 mm) were obtained. Addition of short C fibres seems to worsen the densification process in the C sf/SiC multilayer composites, whereas anisotropy shrinkage in C sf/SiC was also observed. Open pores size was increased slightly after the addition of C fibre but it decreased with the mean fibre length. Mechanical properties were affected by high residual porosity. The addition of short C fibre has not changed the crack deflection at weak interfaces. C sf/SiC multilayer composites containing longer fibres (4.5 and 6 mm) presented higher elastic modulus, bending strength and Vickers hardness as compared to shorter fibres (3 mm). Improved sintering performance and fibre content are necessary to improve mechanical properties.
AB - Silicon carbide multilayer composites containing short carbon fibres (C sf/SiC) were prepared by tape casting and pressureless sintering. C fibres were dispersed in solvents and then mixed with SiC slurry to make green C sf/SiC tape. Triton X-100 was found to be the best one for Toho Tenax HTC124 fibres (with water soluble coating) among BYK-163, BYK-410, BYK-2150, BYK-9076, BYK-9077 and Triton X-100 dispersants. C sf/SiC multilayer composites containing 5 vol.% fibre (mean fibre length of 3, 4.5, and 6 mm) were obtained. Addition of short C fibres seems to worsen the densification process in the C sf/SiC multilayer composites, whereas anisotropy shrinkage in C sf/SiC was also observed. Open pores size was increased slightly after the addition of C fibre but it decreased with the mean fibre length. Mechanical properties were affected by high residual porosity. The addition of short C fibre has not changed the crack deflection at weak interfaces. C sf/SiC multilayer composites containing longer fibres (4.5 and 6 mm) presented higher elastic modulus, bending strength and Vickers hardness as compared to shorter fibres (3 mm). Improved sintering performance and fibre content are necessary to improve mechanical properties.
KW - A. Tape casting
KW - C. Mechanical properties
KW - Composite
KW - Multilayer
KW - Short fibre
UR - http://www.scopus.com/inward/record.url?scp=83555176059&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2011.08.024
DO - 10.1016/j.ceramint.2011.08.024
M3 - Article
AN - SCOPUS:83555176059
VL - 38
SP - 1011
EP - 1018
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 2
ER -