TY - JOUR
T1 - Erosion resistance of C/C-SiC-ZrB2 composites exposed to oxyacetylene torch
AU - Liu, Yue
AU - Fu, Qiangang
AU - Zhang, Jiaping
AU - Li, Lu
AU - Zhuang, Lei
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/11/1
Y1 - 2016/11/1
N2 - Carbon/carbon (C/C) composites were modified with SiC-ZrB2 by reactive melt infiltration (RMI). The erosion resistance of the modified C/C composites, which machined into leading edge to simulate the real working condition, was investigated by exposure to the oxyacetylene torch. The erosion morphology and phase composition were examined by SEM and XRD. After exposure to oxyacetylene torch with a heat flux of 2.38 MW/m2 for 60 s, the modified leading edge was slight damaged with linear ablation rate of 0.013 mm/s and mass ablation of 0.0014 g/s, decreased by 70% and 48% compared to pure C/C composites. During ablation, a homogeneous and dense oxide layer was formed on the front of the leading edge, contributing to enhance the ablation resistance of the modified C/C composites. The ablation mechanism of the C/C-SiC-ZrB2 composites is related to the combined effects of thermochemical ablation by oxidative species and the thermomechanical damage by the shear action of high speed oxyacetylene torch.
AB - Carbon/carbon (C/C) composites were modified with SiC-ZrB2 by reactive melt infiltration (RMI). The erosion resistance of the modified C/C composites, which machined into leading edge to simulate the real working condition, was investigated by exposure to the oxyacetylene torch. The erosion morphology and phase composition were examined by SEM and XRD. After exposure to oxyacetylene torch with a heat flux of 2.38 MW/m2 for 60 s, the modified leading edge was slight damaged with linear ablation rate of 0.013 mm/s and mass ablation of 0.0014 g/s, decreased by 70% and 48% compared to pure C/C composites. During ablation, a homogeneous and dense oxide layer was formed on the front of the leading edge, contributing to enhance the ablation resistance of the modified C/C composites. The ablation mechanism of the C/C-SiC-ZrB2 composites is related to the combined effects of thermochemical ablation by oxidative species and the thermomechanical damage by the shear action of high speed oxyacetylene torch.
KW - Ceramic matrix composites
KW - High temperature corrosion
KW - SEM
UR - http://www.scopus.com/inward/record.url?scp=84964321149&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2016.04.007
DO - 10.1016/j.jeurceramsoc.2016.04.007
M3 - 文章
AN - SCOPUS:84964321149
SN - 0955-2219
VL - 36
SP - 3815
EP - 3821
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 15
ER -