摘要
通过混合反应容器模型计算了高温燃气与喷管抗氧化涂层典型材料的热化学反应信息.结果表明,混合容器内部的燃气流组分高温下呈稳定状态,喷管抗氧化涂层材料与燃气流组分反应性计算发现了在2 500 K、7 MPa下HfC、ZrB2易被燃气流组分中的氧化性组元所氧化,两者稳定性较弱,但所生成的氧化物HfO2、ZrO2具有优秀的稳定性和抗氧化性.在喷管表面涂覆涂层时,应选用具有较佳稳定性和抗氧化性的涂层或涂层体系,以达到提高喷管抗氧化烧蚀性能的目的.
The thermal-chemical reaction information of high temperature exhaust gas with typical antioxidation coating materials on the nozzle was obtained via a mixed reaction vessel model. The calculated results showed that the high temperature gas flow within the mixing vessel components was in a stable state at a high temperature. The typical oxidation resistance coating materials HfC and ZrB2 at 2 500 K and 7 MPa were found to be easily oxidized by the oxidation components in the reactive gas flow, and their stability was weak. But the generated oxides HfO2 and ZrO2, as the nozzle surface coating materials,had excellent stability and oxidation resistance and could be chosen for the better stability and oxidation resistance as the coating materials or coating systems to achieve the purpose of improving the antioxidant nozzle ablation performance.
作者
张其斌
白瑀
Zhang Qi-bin;Bai Yu(Gansu Computing Center,Lanzhou 730030,China;College of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第3期422-426,共5页
Journal of Lanzhou University(Natural Sciences)
基金
甘肃省科技创新平台专项项目(18JR5JA001)
关键词
抗氧化涂层
反应信息
喷管
烧蚀
anti-oxidation coating
response information
nozzle
ablation
