A dense and crack free MoSi2–ZrB2 coating was prepared on the SiC coated carbon/carbon (C/C) composites using a supersonic plasma spraying technique. The coated composites were characterised using scanning electron microscopy and X-ray diffraction. The analysis shows that the as prepared MoSi2–ZrB2 coating, with a thickness of ∼100 μm, combines well with the inner SiC coating. After oxidation at 1200°C for 72 h in air, the mass loss of MoSi2–ZrB2/SiC coated C/C is only 4.24 wt-%, which is significantly lower than that of MoSi2/SiC coated C/C (11.35 wt-%). The excellent oxidation protective ability of the MoSi2–ZrB2 coating is mainly attributed to ZrSiO4 produced by dispersive ZrO2 particles and SiO2 in the coating at high temperature.
JacobsonN. S. and CurryD. M.: ‘Oxidation microstructure studies of reinforced carbon/carbon’, Carbon, 2006, 44, 1142–1150. doi: 10.1016/j.carbon.2005.11.013
2.
StrifeJ. R. and SheehanJ. E.: ‘Ceramic coatings for carbon–carbon metallic dispersions’, J. Am. Ceram. Soc., 1988, 67, 369–374.
3.
XuY. D., ChengL. F. and ZhangL. T.: ‘Oxidation behavior and mechanical properties of C/SiC composites with Si–MoSi2 oxidation protection coating’, J. Mater. Sci., 1999, 34, 6009–6014. doi: 10.1023/A:1004741014185
4.
HuangJ. F., ZengX. R., LiH. J., XiongX. B. and FuY. W.: ‘Influence of the preparation temperature on the phase, microstructure and anti-oxidation property of a SiC coating for C/C composites’, Carbon, 2004, 42, 1517–1521. doi: 10.1016/j.carbon.2004.01.066
5.
HeZ. B., LiH. J., ShiX. H., FuQ. G. and WuH.: ‘Microstructure and oxidation resistance of SiC–MoSi2 multi-phase coating for SiC coated C/C composites’, Prog. Nat. Sci., 2014, 24, 247–252. doi: 10.1016/j.pnsc.2014.05.005
6.
RenX. R., LiH. J. and FuQ. G.: ‘TaB2–SiC–Si multiphase oxidation protective coating for SiC-coated carbon/carbon composites’, J. Eur. Ceram. Soc., 2013, 33, 2953–2959. doi: 10.1016/j.jeurceramsoc.2013.06.028
7.
DumontA. L., BonnetJ. P. and ChartierT.: ‘MoSi2/Al2O3 FGM: elaboration by tape casting and SHS’, J. Eur. Ceram. Soc., 2001, 21, 2353–2360. doi: 10.1016/S0955-2219(01)00198-4
8.
FeiX. A., NiuY. R., JiH., HuangL. P. and ZhengX. B.: ‘A comparative study of MoSi2 coatings manufactured by atmospheric and vacuum plasma spray process’, Ceram. Int., 2011, 37, 813–817. doi: 10.1016/j.ceramint.2010.10.018
9.
ZhangY. L., LiH. J. and HuZ. X.: ‘C/SiC/MoSi2–SiC–Si multilayer coating for oxidation protection of carbon/carbon composites’, Trans. Nonferr. Met. Soc. China, 2013, 23, 2118–2122. doi: 10.1016/S1003-6326(13)62705-3
10.
RamaseshaS. K. and ShobuK.: ‘Oxidation of MoSi2 and MoSi2-based materials’, Bull. Mater. Sci., 1999, 22, 769–773. doi: 10.1007/BF02745603
11.
NyutuE. K., KmetzM. A. and SuibS. L.: ‘Formation of MoSi2–SiO2 coatings on molybdenum substrates by CVD/MOCVD’, Surf. Coat. Technol., 2006, 200, 3980–3986. doi: 10.1016/j.surfcoat.2005.02.212
12.
LiH. J., YaoX. Y. and ZhangY. L.: ‘Anti-oxidation properties of ZrB2 modified silicon-based multilayer coating for carbon/carbon composites at high temperatures’, Trans. Nonferr. Met. Soc. China, 2013, 23, 2094–2099. doi: 10.1016/S1003-6326(13)62701-6
13.
GaoD., ZhangY. and FuJ. Y.: ‘Oxidation of zirconium diboride–silicon carbide ceramics under an oxygen partial pressure of 200 Pa: formation of zircon’, Corros. Sci., 2010, 52, 3297–3303. doi: 10.1016/j.corsci.2010.06.004
14.
FuQ. G., ZhangJ. P., ZhangZ. Z. and LiH. J.: ‘SiC–MoSi2/ZrO2–MoSi2 coating to protect C/Ccomposites against oxidation’, Trans. Nonferr. Met. Soc. China, 2013, 23, 2113–2117. doi: 10.1016/S1003-6326(13)62704-1
15.
RenX. R., LiH. J. and ChuY. H.: ‘Preparation of oxidation protective ZrB2–SiC coating by in-situ reaction method on SiC-coated carbon/carbon composites’, Surf. Coat. Technol., 2014, 247, 61–67. doi: 10.1016/j.surfcoat.2014.03.017
16.
ZhangW. Z., ZengY., GbologahL., XiongX. and HuangB. Y.: ‘Preparation and oxidation property of ZrB2–MoSi2/SiC coating on carbon/carbon composites’, Trans. Nonferr. Met. Soc. China, 2011, 21, 1538–1544. doi: 10.1016/S1003-6326(11)60893-5
17.
ZhangY. L., HuZ. X. and LiH. J.: ‘Ablation resistance of ZrB2–SiC coating prepared by supersonic atmosphere plasma spraying for SiC-coated carbon/carbon composites’, Ceram. Int., 2014, 40, 14749–14755. doi: 10.1016/j.ceramint.2014.06.064
18.
LiuY. B., WangQ. S., MaZ., WangH., ZhengK. N., WeiS. H. and WuX.: ‘Anti-ablation properties of MoSi2–W multilayer coating system deposited by atmospheric plasma spraying’, Mater. Res. Innov., 2014, 18, 1017–1022.
19.
FuQ. G., LiH. J., ShiX. H., LiK. Z. and SunG. D.: ‘Silicon carbide coating to protect carbon/carbon composites against oxidation’, Scr. Mater., 2005, 52, 923–927. doi: 10.1016/j.scriptamat.2004.12.029
20.
WuH., LiH. J., MaC. and FuQ. G.: ‘MoSi2-based oxidation protective coatings for SiC-coated carbon–carbon composites prepared by supersonic plasma spraying’, J. Eur. Ceram. Soc., 2010, 30, 3267–3270. doi: 10.1016/j.jeurceramsoc.2010.06.007
21.
KassnerH., SiegertR., HathiramaniD., VassenR. and StoeverD.: ‘Application of suspension plasma spraying (SPS) for manufacture of ceramic coatings’, J. Therm. Spray Technol., 2008, 17, 115–123. doi: 10.1007/s11666-007-9144-2
22.
SilvestroniL. and ScitiD.: ‘TEM analysis, mechanical characterization and oxidation resistance of a highly refractory ZrB2 composite’, J. Alloys Compd, 2014, 602, 346–355. doi: 10.1016/j.jallcom.2014.02.133
