【摘 要】
:
采用固相合成法制备了La0.8Sr0.2(Ga0.8Mg0.2)0.1Fe0.9O3-δ(LSGMF)混合导体和La0.8Sr0.2(Ga0.8Mg0.2)0.1Fe0.9O3-δ(LSGM)固体电解质,利用XRD、TGA、范德堡直流四探针法和热膨胀仪等
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采用固相合成法制备了La0.8Sr0.2(Ga0.8Mg0.2)0.1Fe0.9O3-δ(LSGMF)混合导体和La0.8Sr0.2(Ga0.8Mg0.2)0.1Fe0.9O3-δ(LSGM)固体电解质,利用XRD、TGA、范德堡直流四探针法和热膨胀仪等对试样进行了分析。以LSGMF为致密扩散障碍层,以LSGM为氧泵层,采用共压共烧结法制备了极限电流型氧传感器,利用SEM和EDS对LSGMF/LSGM陶瓷体横截面的微观形貌和成分进行了分析。结果表明:LSGMF具有菱方钙钛矿结构(R-3c空间群),它在65
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