浆料成分对NiO电极微观结构的影响  

Effect of Paste Composition on the Microstructure of NiO Electrode

作　　者：王敏[1] 夏风[1] 王晓昳[1] 鄢文超[1] 肖建中[1] 

机构地区：[1]华中科技大学材料科学与工程学院,武汉430074

出　　处：《硅酸盐通报》2012年第1期29-32,共4页Bulletin of the Chinese Ceramic Society

摘　　要：分别采用NiO浆料、Ni浆料和Ni/YSZ浆料制备NiO敏感电极。其中Ni/YSZ浆料是由在Ni浆料中添加15vol%YSZ粉末制备的。结果表明,采用NiO浆料普通烧结得到的NiO电极致密且有裂纹;采用Ni浆料和Ni/YSZ浆料反应烧结分别制备的NiO电极和NiO/YSZ复合电极则疏松多孔且无裂纹。浆料中添加的YSZ不仅能够细化NiO电极晶粒,同时能增强电极和基底的界面附着,增加三相界面的数量和长度。NiO paste,Ni paste and Ni/YSZ paste were used to prepare NiO sensing electrodes,respectively.Ni/YSZ paste was fabricated by adding 15 vol% YSZ powder into Ni paste.The results indicated that the NiO electrodes made by NiO paste using ordinary sintering are compact and contained a lot of cracks.By contrast,the NiO electrodes and NiO/YSZ composite electrodes prepared by Ni paste and Ni/YSZ paste adopting reaction sintering,respectively,are porous and no cracks are observed.The addition of YSZ in pastes have a strong particle refining effect on NiO grains,enhance interface adhesion between NiO electrode and YSZ electrolyte and increase the amount and length of three phase boundary.

关 键 词：YSZ电解质 NiO电极 NiO/YSZ复合电极 反应烧结 微观形貌 

分 类 号：TQ174[化学工程—陶瓷工业]