Microstructure of a Mo-Si-C-N multi-layered anti-oxidation coating on carbon/carbon composites by fused slurry
作者： Zhonghong Lai , Songhe Meng , Jingchuan Zhu , Jaeho Jeon
DOI: 10.1007/S12598-009-0089-0
关键词: Transmission electron microscopy 、 Composite material 、 Coating 、 Sintering 、 Scanning electron microscope 、 X-ray photoelectron spectroscopy 、 Microstructure 、 Materials science 、 Nanowire 、 Energy-dispersive X-ray spectroscopy
摘要: A Mo-Si-C-N multi-layered anti-oxidation coating was in-situ fabricated by introducing nitrogen atmosphere during the fused sintering of Mo-Si slurry pre-layer on carbon/carbon composites. The phase composition and microstructure were characterized X-ray diffractometry, optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, photoelectron transmission microscopy. exhibited a three-layered structure. Besides MoSi2/Si main-layer SiC bonding-layer, surface layer about 10 µm in thickness synthesized surface. mainly consisted nanowires contained some Si3N4 Si phases. to 200 nm diameter presented terrace distortion Transmission indicated that grew along preferred 〈111〉 direction. During oxidation test, transmuted into SiO2 glass, which can play an important role improving resistance C/C
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