TY - JOUR
T1 - SiC nanowire-toughened MoSi2-WSi2-SiC-Si multiphase coating for improved oxidation resistance of C/C composites
AU - Zhang, Yulei
AU - Zhang, Pengfei
AU - Ren, Jincui
AU - Zhang, Leilei
AU - Zhang, Jiaping
N1 - Publisher Copyright:
© 2016 Elsevier Ltd and Techna Group S.r.l.
PY - 2016/8/15
Y1 - 2016/8/15
N2 - To improve the oxidation resistance of carbon/carbon (C/C) composites at high temperature, a SiC nanowire-toughened MoSi2-WSi2-SiC-Si multiphase coating was prepared by chemical vapor deposition (CVD) and pack cementation. The microstructure, mechanical properties and oxidation resistance of the coating were investigated. After the introduction of SiC nanowires, the elastic modulus, hardness, and fracture toughness of the MoSi2-WSi2-SiC-Si coating were increased by 25.48%, 4.09% and 45.03%, respectively. The weight loss of the coated sample with SiC nanowires was deceased from 4.83–2.08% after thermal shock between 1773 K and room temperature for 30 cycles and the weight loss is only 3.24% after isothermal oxidation at 1773 K in air for 82 h. The good oxidation resistance of the coating is mainly attributed to that SiC nanowires can effectively inhibit the propagation of cracks in the coating by the toughening mechanisms including bridging and pull-out.
AB - To improve the oxidation resistance of carbon/carbon (C/C) composites at high temperature, a SiC nanowire-toughened MoSi2-WSi2-SiC-Si multiphase coating was prepared by chemical vapor deposition (CVD) and pack cementation. The microstructure, mechanical properties and oxidation resistance of the coating were investigated. After the introduction of SiC nanowires, the elastic modulus, hardness, and fracture toughness of the MoSi2-WSi2-SiC-Si coating were increased by 25.48%, 4.09% and 45.03%, respectively. The weight loss of the coated sample with SiC nanowires was deceased from 4.83–2.08% after thermal shock between 1773 K and room temperature for 30 cycles and the weight loss is only 3.24% after isothermal oxidation at 1773 K in air for 82 h. The good oxidation resistance of the coating is mainly attributed to that SiC nanowires can effectively inhibit the propagation of cracks in the coating by the toughening mechanisms including bridging and pull-out.
KW - Ceramic coating
KW - Oxidation resistance
KW - SiC nanowires
UR - http://www.scopus.com/inward/record.url?scp=84969631078&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2016.05.056
DO - 10.1016/j.ceramint.2016.05.056
M3 - 文献综述
AN - SCOPUS:84969631078
SN - 0272-8842
VL - 42
SP - 12573
EP - 12580
JO - Ceramics International
JF - Ceramics International
IS - 11
ER -