TY - JOUR
T1 - Ablation resistance of HfB2-SiC coating prepared by in-situ reaction method for SiC coated C/C composites
AU - Wang, Peipei
AU - Li, Hejun
AU - Jia, Yujun
AU - Zhang, Yulei
AU - Yuan, Ruimei
N1 - Publisher Copyright:
© 2017 Elsevier Ltd and Techna Group S.r.l.
PY - 2017/10/15
Y1 - 2017/10/15
N2 - To improve the ablation resistance of SiC coating, HfB2-SiC coating was prepared on SiC-coated carbon/carbon (C/C) composites by in-situ reaction method. Owing to the penetration of coating powders, there is no clear boundary between SiC coating and HfB2-SiC coating. After oxyacetylene ablation for 60 s at heat flux of 2400 kW/m2, the mass ablation rate and linear ablation rate of the coated C/C composites were only 0.147 mg/s and 0.267 µm/s, reduced by 21.8% and 60.0%, respectively, compared with SiC coated C/C composites. The good ablation resistance was attributed to the formation of multiple Hf-Si-O glassy layer including SiO2, HfO2 and HfSiO4.
AB - To improve the ablation resistance of SiC coating, HfB2-SiC coating was prepared on SiC-coated carbon/carbon (C/C) composites by in-situ reaction method. Owing to the penetration of coating powders, there is no clear boundary between SiC coating and HfB2-SiC coating. After oxyacetylene ablation for 60 s at heat flux of 2400 kW/m2, the mass ablation rate and linear ablation rate of the coated C/C composites were only 0.147 mg/s and 0.267 µm/s, reduced by 21.8% and 60.0%, respectively, compared with SiC coated C/C composites. The good ablation resistance was attributed to the formation of multiple Hf-Si-O glassy layer including SiO2, HfO2 and HfSiO4.
KW - Ablation resistance
KW - Carbon/carbon composites
KW - HfB-SiC
UR - http://www.scopus.com/inward/record.url?scp=85020433368&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2017.06.052
DO - 10.1016/j.ceramint.2017.06.052
M3 - 文章
AN - SCOPUS:85020433368
SN - 0272-8842
VL - 43
SP - 12005
EP - 12012
JO - Ceramics International
JF - Ceramics International
IS - 15
ER -