SrCeO_3基高温质子导体及Al液定氢探头  

SrCeO_3 BASED HIGH TEMPERATURE PROTON CONDUCTOR AND HYDROGEN PROBE

作　　者：郑敏辉[1] 陈祥[1] 

机构地区：[1]北京科技大学

出　　处：《金属学报》1994年第5期B238-B242,共5页Acta Metallurgica Sinica

基　　金：国家自然科学基金

摘　　要：以自制成分为ＳｒＣｅ_（０．９５）Ｙｂ_（０．０５）Ｏ_（３－α）的致密陶瓷管为固体电解质，以Ｃａ／ＣａＨ２混合物为参比物组装氢探头。探头插入Ａｌ液构成氢浓差电化学电池：Ｍｏ，Ｃａ／ＣａＨ_２｜Ｈ￣＋ｃｏｎｄｕｃｔｏｒ｜［Ｈ］ｍｏｌｔｅｎＡｌ’Ｍｏ对高氢含量Ａｌ液进行测定，电动势稳定时间长达１．８ｋｓ，准确反映了氢过饱和度．用六氯乙烷脱氢处理时电动势也有迅速正确的响应。使用后的固体电解质经Ｘ射线衍射未测出相变化。热重分析表明让ＳｒＣｅＯ３基陶瓷中Ｓｒ过量可减轻其中４价Ｃｅ离子被还原程度。Hydrogen probes were constructed with highly dense tubes of SrCe0.95Yb0.05O3-α based proton conductor made by the authors, and with the mixture of Ca/CaH2. By insertion of the probe into liquid Al sample, the hydrogen concentration cell: Mo, Ca/CaH2|H+conductor[H]molten Al, Mo, is available to determine its hydrogen content. EMF of the probe was stable for 1.8 ks and also responded rapidly and accurately to the dehydrogenation by hexachloroethane. XRD and TG analysis of the recovered proton conductor showed that no other phase but perovskite was identified and the excess of Sr improves the stabiltiy of the proton conductor under strong reducing atmosphere.

关 键 词：SrCeO3 质子导体 定氢探头 铝液 

分 类 号：TH832.34[机械工程—仪器科学与技术]