TY - JOUR
T1 - Fabrication and mechanical behaviors of 2D C/SiC-BC x composite at room temperature
AU - Liu, Yongsheng
AU - Cheng, Laifei
AU - Zhang, Litong
AU - Yang, Wenbin
AU - Zhou, Shengtian
AU - Zhang, Weihua
PY - 2012/5
Y1 - 2012/5
N2 - C/SiC composite modified with boron carbide (BCx) matrix (entitled: C/SiC-BCx composite) was fabricated by chemical vapor infiltration (CVI). The densification behavior, microstructure, and mechanical behaviors of C/SiC-BCx composite were investigated. The results indicated that the density increase, corresponding with a decreasing porosity when CVI times increase. The density achieves 2.2 g cm-3 with 5% open porosity ratio. Inner fiber bundle, the matrix is SiC. Among fiber bundles, the matrices are composed with multilayer SiC and BCx. The non-brittle flexural fracture behavior was demonstrated and the flexural strength is 442 MPa. The fracture toughness is 22.84 MPa.m1/2. The non-linear tensile behavior was also demonstrated and the strength is 250 MPa. The compressive curve of sample is linear and the strength is 280 MPa. The in-plane shear behavior is also non-linear and shear strength is 160.9 MPa. The inter-laminar shear behavior is linear and the shear strength is 32.5 MPa. All mechanical behaviors of 2D of the C/SiC-BCx composite have been compared with that of the C/SiC composite.
AB - C/SiC composite modified with boron carbide (BCx) matrix (entitled: C/SiC-BCx composite) was fabricated by chemical vapor infiltration (CVI). The densification behavior, microstructure, and mechanical behaviors of C/SiC-BCx composite were investigated. The results indicated that the density increase, corresponding with a decreasing porosity when CVI times increase. The density achieves 2.2 g cm-3 with 5% open porosity ratio. Inner fiber bundle, the matrix is SiC. Among fiber bundles, the matrices are composed with multilayer SiC and BCx. The non-brittle flexural fracture behavior was demonstrated and the flexural strength is 442 MPa. The fracture toughness is 22.84 MPa.m1/2. The non-linear tensile behavior was also demonstrated and the strength is 250 MPa. The compressive curve of sample is linear and the strength is 280 MPa. The in-plane shear behavior is also non-linear and shear strength is 160.9 MPa. The inter-laminar shear behavior is linear and the shear strength is 32.5 MPa. All mechanical behaviors of 2D of the C/SiC-BCx composite have been compared with that of the C/SiC composite.
KW - Ceramic-matrix composites
KW - chemical vapor infiltration
KW - mechanical properties
KW - scanning electron microscopy
UR - http://www.scopus.com/inward/record.url?scp=84861032727&partnerID=8YFLogxK
U2 - 10.1177/0021998311417644
DO - 10.1177/0021998311417644
M3 - 文章
AN - SCOPUS:84861032727
SN - 0021-9983
VL - 46
SP - 1251
EP - 1260
JO - Journal of Composite Materials
JF - Journal of Composite Materials
IS - 10
ER -