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Huan C.,East China Normal University | Huan C.,CAS Shanghai Institute of Ceramics | Jiang D.,CAS Shanghai Institute of Ceramics | Liu G.,Ganzhou Qiandong Rare Earth Group Co. | Li Q.,East China Normal University
Key Engineering Materials | Year: 2012

There are many bonding methods of the ceramic sintered body, such as diffusion bonding, glass bonding, and reports in this regard are not difficult to see. But the solid electrolyte zirconia ceramic bonding in NOx sensor is rarely reported. Here we use zirconia and aluminum-silicon glass together to bond zirconia ceramic sintered body, and tested the electrochemical performance with AC (alternating current) impedance spectroscopy, EMF (electromotive force) of the adhesive layer. The results indicate that the electrochemical performance is good. © (2013) Trans Tech Publications. Source


Chen X.,Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Provice | Chen X.,Nanchang University | Cai Q.-Y.,Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Provice | Yu X.-S.,Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Provice | And 6 more authors.
Chinese Rare Earths | Year: 2015

The vertical distributions of soil environmental factors were compared in ion-type rare earth mines before and after in-situ leaching, and the primary limiting factors effecting ecological reconstruction were explored in rare earth mines of South Jiangxi. Test results show that, after in-situ leaching, ash-free dry mass (AFDM), total organic carbon, ammonia-cal nitrogen, nitrate nitrogen and total nitrogen in soil increased significantly; pH value, microbial biomass carbon and total phosphorus decreased significantly; significant differences of soil environmental factors were found among horizons. The results of principal components analysis inticated that, before treatment, the dominant soil environmental factor in the topsoil is MBC, and that in other horizons (1~6 m) is pH value; the dominant factor in the topsoil changed to be TOC, and that in the weathered soil (3~6 m) became soil moisture (SM) and TN. ©, 2015, Editorial Office of Chinese Rare Earths. All right reserved. Source


Cui J.,East China Normal University | Cui J.,CAS Shanghai Institute of Ceramics | Feng T.,CAS Shanghai Institute of Ceramics | Xia J.,CAS Shanghai Institute of Ceramics | And 3 more authors.
Key Engineering Materials | Year: 2012

Through Mechanical grounding method, CaZrO3 - 8YSZ(8% in mol yttria stabilized zirconia) electrolyte samples with different amounts of CaZrO3 at 10wt%, 20wt%, 30wt% were sintered at different temperatures in furnace. So composite stabilized ZrO2 is composed. The effects of the sintering temperature and the contents of the CaZrO3 on the conductivity, porosity, flexure strength, hardness were investigated. XRD and SEM were used to analyse the compositions and microcosmic morphology. © (2013) Trans Tech Publications. Source


Liu W.,Shanghai Normal University | Liu W.,CAS Shanghai Institute of Ceramics | Liu G.,Ganzhou Qiandong Rare Earth Group Co. | Peng N.,Ganzhou Qiandong Rare Earth Group Co. | Sun D.,Shanghai Normal University
Key Engineering Materials | Year: 2012

Currently, Yttria-stabilized zirconia solid state electrolyte are widely used in various fields. The basic performance of Yttria-stabilized zirconia (5YSZ) prepared by different synthesis methods and sintering temperatures are studied in this paper, their phase compositions and microstructure are studied with XRD and SEM. The ionic conductivity of 5YSZ sintered at different temperatures are studied with A.C. impedance spectroscopy measurement. © (2013) Trans Tech Publications. Source


Han Q.,Kunming University of Science and Technology | Han Q.,CAS Shanghai Institute of Ceramics | Liu G.,Ganzhou Qiandong Rare Earth Group Co. | Peng N.,Ganzhou Qiandong Rare Earth Group Co. | And 3 more authors.
Key Engineering Materials | Year: 2012

Electrode slurry made of Pt powder was brushed on both surfaces of the sintered ZrO2 substrate. And then the Pt electrodes were sintered under various temperatures. The microstructure of the surface of the electrodes was characterized by scanning electronic microscope. The electrochemical properties of the electrodes were investigated by electrochemical impedance spectroscopy (EIS). The results show that the sintered temperature of the electrode has a remarkable effect on the microstructure of the electrode and the Pt electrode show favorable electrochemical catalysis performance. © (2013) Trans Tech Publications. Source

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