B_(4)C对复相氮化物结合SiC材料抗变温氧化性能的影响  

Effect of B_(4)C on Resistance to Temperature Dependent Oxidation of SiC Materials Combined with Multiphase Nitrides

作　　者：曹会彦[1] 程竹[1] 吴吉光[1] 李杰[1] 冯严宾[1] 马昭阳 CAO Huiyan;CHENG Zhu;WU Jiguang;LI Jie;FENG Yanbin;MA Zhaoyang(State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,China)

机构地区：[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

出　　处：《工业炉》2024年第2期64-67,共4页Industrial Furnace

基　　金：宁夏回族自治区重点研发计划(2022BFE01003)。

摘　　要：制备了B_(4)C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、1200、1400、1550℃空气气氛保温5 h,并在1550℃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%B_(4)C可以在1200℃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。Composite nitride bonded SiC materials with B_(4)C addition amounts of 0(numbered 0^(#))and 0.5w%(numbered B^(#))were prepared.The material was kept in an air atmosphere at 600,800,1000,1200,1400,and 1550℃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 1550℃.The results showed that adding 0.5w%B_(4)C to the composite nitride bonded SiC material can significantly reduce its mass change rate after oxidation at 1200℃and its volume change rate after oxidation at 800℃.

关 键 词：干熄炉 B_(4)C 复相氮化物 碳化硅 变温氧化 斜道区 

分 类 号：TQ175.1[化学工程—硅酸盐工业]