CO对金属铀表面氧化层影响研究

    • 摘要: 用X射线光电子能谱(XPS)和气相色谱(GC)分析研究了CO对金属铀表面氧化层的影响。CO在表面氧化层上的吸附反应导致了U4f峰向低结合能方向位移,氧化物中氧含量减少,原子比(O/U)比值下降了7.2%。体系中CO2体积分数增大11.0%。研究结果表明,CO气氛可抑制金属铀表面的进一步氧化。

       

      Abstract: STUDYONTHEINFLUENCEOFCARBONMONOXIDETOTHESURFACEOXIDELAYEROFURANIUMMETALWangXiaolinDuanRongliangFuYibeiXieRenshou(InstituteofNuclearPhysicsandChemistryofCAEP,Chengdu,610003)ZuoChangmingZhaoChunpeiChenHong(TheAnalyticalandTestingCentreofSichuanUnionUniversity,Chengdu,610064)ABSTRACTTheinfluenceofcarbonmonoxidetothesurfaceoxidelayerofuraniummetalhasbeenstudiedbyX-rayphotoelectronspectroscopy(XPS)andgaschromatography(GC).CarbonmonoxideadsorptionontheoxidelayerresultedinU4fpeakshiftingtothelowerbindingen-ergy.Thecontentofoxygenintheoxideisdecreasedandtheatomicratio(O/U)isdecreasedby7.2%.Theamountofcarbondioxideintheatmosphereafterthesurfacereactionisin-creasedby11.0%.Theinvestigationindicatesthatthesurfacelayercanpreventthefurtheroxidationuraniummetalintheatmosphereofcarbonmonxide.KeywordsUraniumCarbonmonoxideSurfaceanalysi

       

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