B4C对复相氮化物结合SiC材料抗变温氧化性能的影响
Effect of B4C on Resistance to Temperature Dependent Oxidation of SiC Materials Combined with Multiphase Nitrides
曹会彦 1程竹 1吴吉光 1李杰 1冯严宾 1马昭阳1
作者信息
- 1. 中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室,河南洛阳 471039
- 折叠
摘要
制备了 B4C添加量分别为0(编号0#)和0.5w％(编号B#)的复相氮化物结合SiC材料,研究了其在600、800、1000、1 200、1 400、1 550 ℃空气气氛保温5 h,并在1 550℃重复氧化4次后的显气孔率、质量变化率、体积变化率、物相组成和显微结构的变化.结果表明:在复相氮化物结合SiC材料中添加0.5w％B4C可以在1 200 ℃氧化之后显著降低其质量变化率,在800℃氧化之后显著降低其体积变化率.
Abstract
Composite nitride bonded SiC materials with B4C addition amounts of 0(numbered 0#)and 0.5w％(numbered B#)were prepared.The material was kept in an air atmosphere at 600,800,1 000,1 200,1 400,and 1 550 ℃ for 5 hours,and the changes in porosity,mass change rate,volume change rate,phase composition,and microstructure were studied after four repeated oxidation cycles at 1 550 ℃.The results showed that adding 0.5w％B4C to the composite nitride bonded SiC material can significantly reduce its mass change rate after oxidation at 1 200℃and its volume change rate after oxidation at 800 ℃.
关键词
干熄炉/B4C/复相氮化物/碳化硅/变温氧化/斜道区Key words
dry quenching furnace/B4C/muliphase nitrides/SiC/temperature dependent oxidation/ramp area引用本文复制引用
基金项目
宁夏回族自治区重点研发计划(2022BFE01003)
出版年
2024
NETL
NSTL
万方数据