航空科学技术2025，Vol.36Issue(5)：17-26,10.DOI:10.19452/j.issn1007-5453.2025.05.002
C/C-SiC复合材料SiC-Si基复合涂层的宽温域抗氧化性能
Wide Temperature Range Oxidation Resistance of SiC-Si Based Layered Coatings on C/C-SiC Composites
摘要
Abstract
With the rapid development of aerospace technology,developing advanced thermal protection materials with excellent high-temperature stability and oxidation resistance has emerged as an urgent task for technological innovation in the aerospace field.To enhance the wide temperature range oxidation resistance of C/C-SiC composites,a SiC-Si/TiB2-SiC-Si/SiC-Si/SiO2-B multi-layer structure coating was prepared on the C/C-SiC composites using a combination of slurry dipping-carbonization and gaseous silicon infiltration.The phase composition,surface morphology,and cross-section morphology of the layered coating before and after oxidation were analyzed using X-ray diffractometer,scanning electron microscope and so on.The static and dynamic oxidation properties of the layered coating were evaluated in a Muffle furnace.Results indicate that the layered coating experienced only 0.18%weight loss after being subjected to oxidation at 900℃ for 182h,while it exhibited a weight gain of 0.26%after oxidation at 1300℃ for 164h,and a weight gain of 0.32%after oxidation at 1500℃ for 196h.Furthermore,during dynamic oxidation from 450℃ to 1500℃,the layered coating demonstrated consistent weight gain throughout this temperature range.The SiO2-B outer coating of the layered coating can oxidize rapidly at low temperature,form liquid B2O3 glass phase,and heal cracks,so that the SiC-Si layered coating can provide a wide temperature range of anti-oxidation protection for C/C-SiC composites.关键词
宽温域/抗氧化性能/复合涂层/C/C-SiC复合材料/气相渗硅Key words
wide temperature range/anti-oxidation property/layered coating/C/C-SiC composites/gaseous silicon infiltration引用本文复制引用
黄世伟,魏亚龙,孙佳..C/C-SiC复合材料SiC-Si基复合涂层的宽温域抗氧化性能[J].航空科学技术,2025,36(5):17-26,10.基金项目
航空科学基金(2022Z055053004) （2022Z055053004）
超高温结构复合材料重点实验室自主课题(2023-JCJQ-LB-071-05) Aeronautical Science Foundation of China(2022Z055053004) （2023-JCJQ-LB-071-05）
Basic Strengthening Program of China in Science and Technology on Thermostructural Composite Materials Laboratory(2023-JCJQ-LB-071-05) （2023-JCJQ-LB-071-05）
