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Co-firing of LNT/Ag Multilayer Sheets Prepared by Aqueous tape casting

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Journal of Materials Science & Technology 2009年第2期25卷 269-272页

作者： Shaochun Li Qilong Zhang Hui Yang Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China School of Civil Engineering Qingdao Technological University Qingdao 266033 China

Multilayer ceramic sheets composed of Li1.075Nb0.625Ti0.45O3 （LNT） layers and silver metal layers were fabricated by aqueous tape-casting method. LNT green tape was prepared using PVA （polyvinyl alcohol） as binder and ethylene glycol as plasticizer. The influence of the slurry composition on the rheological properties of the slurries and the properties of the resultant green tapes were studied. The slurry exhibited a typical shear thinning behavior. The increase in the PVA content increased the tensile strength of the tapes. The slip compositions with 5 wt pct PVA produced green tapes with satisfactory tensile strength. Ethylene glycol additions enhanced the flexibility of the green tapes but also produced a decrease in the tensile strength. Sliver inner-electrode was pasted on LNT green tapes and the sheets were stacked, pressed and sintered at 900℃ for 2 h. SEM （scanning electron microscopy） micrographs showed that the multilayer sheets were fully dense with fairly uniform microstructure and no reaction was observed between LNT and sliver layers.

关键词： tape casting Li1.075Nb0.625Ti0.45O3 Rheology Lower temperature co-filed ceramics

Study on Properties of LSGM Electrolyte Made by tape casting Method and Applications in SOFC

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Journal of Rare Earths 2006年第Z2期24卷 90-92页

作者：张乃庆孙克宁周德瑞贾德昌 Material Science and Engineering for Postoral Fellows Harbin Institute of Technology Department of Applied Chemistry Harbin Institute of TechnologyHarbin 150001China Department of Applied Chemistry Harbin Institute of Technology Material Science and Engineering for Pastoral Fellows Harbin Institute of Technology

Solid oxide fuel cell is attracting more attention in recent years for its lower pollution emission and high energy convert efficiency. La0.9Sr0.1Ga0.8Mg0.2O3-δis a new kind of electrolyte for intermediate temperature SOFC. In this paper, La0.9Sr0.1Ga0.8Mg0.2O3-δ(LSGM) was prepared by solid state reaction method and formed by tape casting process to make a planar electrolyte. The appropriate amount of the dispersive was obtained by viscosity test. The densities of sintered samples increase with the increasing sintering temperature. It was found that the relative density of electrolyte can approach the value of 95 % by the isostatic pressing treatment of the green tape. The average thermal expansion coefficient of the LSGM is 11 .4×10-6 /℃at temperature range (200 ~ 1200℃). Measurements of the current-voltage and power-current characteristics of the Hi-Air cell show that the open-circuit voltage is 1.067 V at 800℃, peak current density is 0.56 A·cm -2 and the maximum power output is 0.147 W·cm -2.

关键词： solid oxide fuel cells LSGM electrolyte tape casting isotatic pressing rare earths

Electrical properties of La_2Mo_(1.98)Nb_(0.02)O_(8.99) oxide ionic conductors prepared by tape casting

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Journal of Materials Science & Technology 2018年第12期34卷 2368-2370页

作者： Xiao Liu Xiaomin Xu Huiling Du College of Materials Science and Engineering Xi'an University of Science and Technology

LaMoNbOthick films have been successfully prepared by using a tape casting technique. Partial stabilization of the high temperature cubic phase is revealed in Nb doped LaMoO(LMO) films. The sintering temperature is decreased to 925 ℃ as compared with that of 1150 ℃ in bulk ceramics. The grain exhibits an oxide ionic conductivity of 0.014 S cmat 603 ℃ for LaMoNbO, which is 39% higher than pure LMO. Additionally, the Nb doped LMO films present low grain boundary resistance showing the potential application as solid electrolytes.

关键词： Oxide ion conductor Lanthanum molybdate tape casting

Lead-free textured piezoceramics using tape casting:A review

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Journal of Materiomics 2018年第4期4卷 277-303页

作者： Alain D.Moriana Shujun Zhang ISEM Australian Institute of Innovative MaterialsUniversity of WollongongWollongongNSW2500Australia Defence Materials Technology Centre 24 Wakefield StreetHawthornVIC3122Australia

In this review,the evolution of textured lead-free piezoceramics has been explored,primarily focusing on the technique of templated grain growth(TGG)and reactive-templated grain growth(RTGG),as an alternative to single *** mechanics and properties of using template in guiding and orienting the ceramic grains into the same crystal orientation allow for piezoelectric properties approaching those of their single-crystal *** fabrication process was surveyed in depth,with focus placed on the tape casting process and numerous variables associated with aligning the template seeds in the ceramic *** piezoelectric and ferroelectric properties of the textured ceramics are supposed to be a function of all parameters(tape casting,slurry formation,sintering profile,template properties)in an effort to determine the significance of their contributions to the properties.

关键词： Piezoelectric Textured tape casting Template Lead-free

Prestress Design of Stainless Steel Fibers/Zirconia Composite by tape casting

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Journal of Wuhan University of Technology(Materials Science) 2010年第4期25卷 565-569页

作者：赵康 School of Materials and Engineering Xi'an University of Technology

Prestressed SUS316 fibers/ZrO2 composite was fabricated using tape casting. Causes of cracks were analyzed by classical thermo-elastic theory and finite element method in preparation process. An optimization design was carried out on SUS316 fibers’ arrangement modes by reducing residual thermal stress. Interface topography and element distribution of composite were observed, and bending strengths were tested. Results show that cracks are generated along the direction vertical to SUS316 fibers by axial thermal stress due to different thermal expansion coefficients between SUS316 fibers and zirconia, and the average cracking space is 2 mm. No macroscopic defect is found in composite with SUS316 fibers of sine distribution, and it has better interfacial binding force since interdiffusion between SUS316 and zirconia. Bending strengths of composite with 0°/0°lamination are anisotropic and that are 385.74 MPa and 500.7 MPa respectively, but that with 0°/90°lamination is isotropic and it is 433.92 MPa. Bending strength of composite is increased obviously compared with that of zirconia because the prestress of surface is compressive stress.

关键词： SUS316 fibers/ZrO2 prestress tape casting finite element bending strength

Fabrication of a large area cathode-supported thin electrolyte film for solid oxide fuel cells via tape casting and co-sintering techniques

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Fabrication of a large area cathode-supported thin electroly...

Preparation and properties of multi-wall carbon nanotube/SiC composites by aqueous tape casting

2010年第二届中国科学院博士后学术年会暨高新技术前沿与发展学术会议

作者：赵春花中国科学院上海硅酸盐研究所

A large area cathode-supported electrolyte film,comprising porous(La0.8Sr0.2) 0.95MnO3(LSM95) cathode substrate,LSM95/ Zr0.89Sc0.1Ce0.01O2-x(SSZ) cathode active layer,and SSZ electrolyte,has been successfully fabricated by tape casting and co-sintering *** interface reaction between cathode and electrolyte was inhibited by using A-site deficient LSM.A dense enough SSZ thin film with a thickness of～26μm was obtained at 1250℃. By using Pt as anode,the obtained single cell reached the maximum power density of 0.54 W cm-2 at 800℃in O2/humidified H2,with open circuit voltage(OCV) value of 1.08 V.

关键词： Solid oxide fuel cell(SOFC) Cathode-supported tape casting Co-sintering Scandia-stabilized zirconia(SSZ)

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中国科学:技术科学 2010年第4期 448-448页

作者： LüZhiHui 1,2,JIANG DongLiang 1,ZHANG JingXian 1 & LIN QingLing 1 1State Key Laboratory of High Performance Ceramics and Superfine Microstructures,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China 2Graduate University of the Chinese Academy of Sciences,Beijing 100049,China

MWCNTS/SiC composites were fabricated by aqueous tape *** solid content(50 vol%) SiC slurries with sintering additives and multi-wall carbon nanotubes(MWCNTs) as reinforcements were prepared using Tetramethylammonium hydroxide as the *** stability of MWCNTs/SiC slurries was studied and characterized in terms of zeta potential and rheology *** relative density of the composite was about 98%after hot-pressing at 1850°C(at 25 MPa in Ar for 30 min) .The hardness of the composites decreased with the increase in MWCNTs *** flexural strength and the fracture toughness were 742.17 MPa and 4.63 MPa·m 1/2,respectively when the MWCNTs content was 0.25 wt%.Further increase in MWCNTs content to 0.50 wt%did not lead to the increase in mechanical *** of MWCNTs were found to be located at SiC grain boundaries and the pull out of the MWCNTs was observed.

关键词： SiC MWCNTs tape casting

Transparent high-performance piezoceramics through pressureless sintering

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Journal of Advanced Ceramics 2024年第5期13卷 561-567页

作者： Hye-Lim Yu Woo-Seok Kang Ju-Hyeon Lee Temesgen Tadeyos Zate Young-Jin Lee Bo-Kun Koo Dong-Jin Shin Min-Soo Kim Soon-Jong Jeong Young Ghyu Ahn Wook Jo Department of Material Science and Engineering Ulsan National Institute of Science and TechnologyUlsan 44919Republic of Korea Energy Conversion Research Center Korea Electrotechnology Research InstituteChangwon 51543Republic of Korea MLCC Development Team Component Biz.UnitSamsung Electro-Mechanics Co.Ltd.Suwon 16674Republic of Korea

Piezoelectricity offers an electromechanical coupling that is widely utilized in transducer *** has been a consistent demand for transparent piezoelectric materials for optoelectrical ***,despite the inherent tradeoff between the transparency and the piezoelectricity,numerous strategies have been explored to develop the transparent piezoelectric ***,the most transparent piezoelectric materials developed to date is either a single crystal or materials that achieve transparency via hot-press sintering,limiting its industrial ***,we introduce a novel piezoelectric material that ensures transparency through co-doping and pressureless sintering of polycrystalline *** this study,we employed a compositional optimization approach to enhance the synergistic effect between the transparency and the piezoelectric properties of 0.71Pb(Mg_(1/3)Nb_(2/3))O_(3)–0.29PbTiO_(3)(PMN–0.29PT)*** utilizing the tape casting process for mass production and large-area manufacturing,our Pb_(0.913)La_(0.0145)Sm_(0.0145)(Mg_(1/3)Nb_(2/3))_(0.71)Ti_(0.29)O_(3)(TP2.9)ceramics exhibited over 60%transparency and large piezoelectric coefficient(d33)of 1104 pC/*** material holds considerable promise for a wide range of industrial applications in both the optical and electronic domains.

关键词： piezoelectric ceramics transparency pressureless sintering co-doping tape casting

Evaluation of La_(0.7)Ca_(0.3)Cr_(0.95)Zn_(0.05)O_(3-δ)-Gd_(0.1)Ce_(0.9)O_(2-δ) Dual-phase Material and its Potential Application in Oxygen Transport Membrane

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Journal of Materials Science & Technology 2014年第10期30卷 954-958页

作者： Tenglong Zhu Zhibin Yang Minfang Han Union Research Center of Fuel Cell State Key Laboratory of Coal Resources and Safe MiningChina University of Mining & Technology

In this work, a dual-phase material consisting Gd0.1Ce0.9O2-δ （GDC, 60 wt%） was synthesized. of La0.7Ca0.3Cr0.95Zn0.05O3-δ （LCCZ, 40 wt%） and Properties including phase structure, sintering behavior, electrical conductivity and oxygen permeability for LCCZ-GDC were evaluated. The results show that dense LCCZ-GDC dual-phase disks were obtained at the sintering temperature of 1250, 1300, 1350 and 1400 ℃ by tape casting and high temperature sintering method. The grain sizes of both GDC and LCCZ grew up with the increasing of sintering temperature. The average grain size of GDC was about 0.5, 0.8, 1.4, 1.8 μm while the average grain size of LCCZ was about 0.8, 1.5, 1.8 and 2 pm after sintering at 1250, 1300, 1350 and 1400℃, respectively. Oxygen flux of LCCZ-GDC decreased with the increase of sintering temperature from 1250 to 1400 ℃. The oxygen flux of LCCZ-GDC sintered at 1250 ℃ reached 0.079 mL/min/cm2 at 975℃ with a membrane thickness of 800 μm. Dual-phase material of LCCZ-GDC will be a promising oxygen transport membrane material for its low sintering temperature and good microstructure.

关键词： Dual-phase material tape casting Sintering temperature Oxygen transport membrane