TY - JOUR AU - XUE, Chaoqiang AU - ZHOU, Haijun AU - HU, Jianbao AU - WANG, Hongda AU - XU, Jiayue AU - DONG, Shaoming PY - 2018 TI - Fabrication and microstructure of ZrB2–ZrC–SiC coatings on C/C composites by reactive melt infiltration using ZrSi2 alloy JO - Journal of Advanced Ceramics SN - 2226-4108 SP - 64 EP - 71 VL - 7 IS - 1 AB - ZrB2–ZrC–SiC ternary coatings on C/C composites are investigated by reactive melt infiltration of ZrSi2 alloy into pre-coatings. Two different pre-coating structures, including porous B4C–C and dense C/B, are designed by slurry dip and chemical vapor deposition (CVD) process respectively. The coating prepared by reactive melt infiltration (RMI) into B4C–C presents a flat and smooth surface with a three-layer cross-sectional structure, namely interior SiC transition layer, gradient ZrB2–ZrC–SiC layer, and ZrB2–ZrC exterior layer. In comparison, the coating prepared by RMI into C/B shows a more granular surface with a different three-layer cross-sectional structure, interior unreacted B–C pre-coating layer, middle SiC layer, and exterior ZrB2–ZrC–ZrSi2 layer. The forming mechanisms of the specific microstructures in two coatings are also investigated and discussed in detail. UR - https://doi.org/10.1007/s40145-017-0257-x DO - 10.1007/s40145-017-0257-x