TY - JOUR
T1 - Effect of pyrolytic carbon interface thickness on microstructure and mechanical properties of lightweight zirconium boride modified carbon-bonded carbon fiber composites
AU - Xu, Xianghong
AU - Xu, Baosheng
AU - Hong, Changqing
AU - Hui, David
N1 - Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - To improve the mechanical properties of carbon-bonded carbon fiber (CBCF) composites, they are firstly fabricated by chemical vapor deposited (CVD) pyrolytic carbon (PyC) coating layer on the carbon fiber surface, and then modified by zirconium boride (ZrB2) using three cycles of precursor infiltration and pyrolysis (PIP) process. The effects of different PyC interface thickness on the microstructure and mechanical properties of ZrB2 modified PyC coated CBCF (PyC-CBCF/ZrB2) composites were studied and characterized. As the PyC thickness increased from 0.5 to 3.6 μm, the flexural properties of PyC-CBCF/ZrB2 composites are noticeably enhanced in x/y and z direction, respectively. Mechanical enhancements for PyC-CBCF/ZrB2 composites are mainly attributed to the effective interface bonding between carbon fiber and PyC, crack deflection and branching within the laminar PyC layer and carbon fiber pullout from PyC interface coating.
AB - To improve the mechanical properties of carbon-bonded carbon fiber (CBCF) composites, they are firstly fabricated by chemical vapor deposited (CVD) pyrolytic carbon (PyC) coating layer on the carbon fiber surface, and then modified by zirconium boride (ZrB2) using three cycles of precursor infiltration and pyrolysis (PIP) process. The effects of different PyC interface thickness on the microstructure and mechanical properties of ZrB2 modified PyC coated CBCF (PyC-CBCF/ZrB2) composites were studied and characterized. As the PyC thickness increased from 0.5 to 3.6 μm, the flexural properties of PyC-CBCF/ZrB2 composites are noticeably enhanced in x/y and z direction, respectively. Mechanical enhancements for PyC-CBCF/ZrB2 composites are mainly attributed to the effective interface bonding between carbon fiber and PyC, crack deflection and branching within the laminar PyC layer and carbon fiber pullout from PyC interface coating.
KW - A. 3-Dimensional reinforcement;
KW - A. Ceramic-matrix composites (CMCs);
KW - B. Mechanical properties;
KW - C. Micro-mechanics
UR - http://www.scopus.com/inward/record.url?scp=84965176089&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2016.03.094
DO - 10.1016/j.compositesb.2016.03.094
M3 - Article
AN - SCOPUS:84965176089
SN - 1359-8368
VL - 96
SP - 305
EP - 311
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
ER -