制备了一系列BaO-MnO-B2O3-SiO玻璃,通过DIL、XRD、SEM研究了其热膨胀行为、玻璃态转变、析晶行为及其与SS410金属连接极材料之间的反应.结果表明:所得密封玻璃的热膨胀系数约为10×10-6 K-1,与YSZ电解质材料和SS410金属连接极材料较为匹配,所得玻璃在800℃保温10 h之后,生成了Ba5Si8O21相为主的微晶玻璃.玻璃的析晶对于密封玻璃与SS410连接极材料之间的化学相容性具有显著影响,析晶之后,玻璃与SS410之间的反应现象减弱.玻璃在N2气氛下进行预析晶处理,形成微晶玻璃之后,与SS410之间的反应显著减少.本研究所得的BaO-MnO-B2O3-SiO2密封玻璃在完成封接之后,在700℃保温100 h,能够保持良好的密封效果.
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