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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)

来源： cnki会议评论

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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

Ultra-low temperature cofired ceramics based on Li_(2)WO_(4)as perspective substrate materials for terahertz frequencies

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Journal of Advanced Ceramics 2023年第3期12卷 526-538页

作者： Dorota Szwagierczak Beata Synkiewicz-Musialska Jan Kulawik Elżbieta Czerwińska Norbert Pałka Kraków Division Łukasiewicz Research Network-Institute of Microelectronics and PhotonicsKraków 30-701Poland Institute of Optoelectronics Military University of TechnologyWarszawa 00-908Poland

With the development of low dielectric permittivity materials having an ultra-low sintering temperature,testing their dielectric properties at terahertz frequencies suitable for 6G communication systems and implementation of the fabricated materials in ultra-low temperature cofired ceramics(ULTCC)were the main goals of the *** tungstate Li_(2)WO_(4)was synthesized by a solid-state reaction and used for the preparation of green tapes and test structures with cofired internal conductive layers,which are destined for substrates of microwave and submillimeter wave *** behavior,thermal effects,and mass changes of the green tapes during heating were studied using a hot-stage microscope,differential thermal analysis,and thermogravimetry.A single-phase composition was revealed for being undoped and doped with AlF3–CaB_(4)O_(7)*** impact of frequency,temperature,the addition of AlF3–CaB_(4)O_(7)and CuBi_(2)O_(4)dopants,and sintering temperature was the subject of in-depth characterization of dielectric properties in a terahertz region.A glass-free composition,ultra-low sintering temperature of 590–630℃,low roughness of the green tapes,dense microstructure,compatibility with Ag conductors,low and stable dielectric permittivity of 5.0–5.8 in a broad range of 0.2–2 THz,and low dielectric loss of 0.008–0.01 at 1 THz are the main advantages of the developed ULTCC substrates.

关键词： Li_(2)WO_(4) ultra-low temperature cofired ceramics(ULTCC) tape casting dielectric properties terahertz frequency range

Thin NASICON Electrolyte to Realize High Energy Density Solid-State Sodium Metal Battery

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Energy & Environmental Materials 2023年第6期6卷 419-426页

作者： Jin An Sam Oh Xiaoyu Xu Zhihan Zeng Kexin Wang Nicholas Yew Jin Tan Eugene Kok Jiemin Huang Li Lu Singapore Institute of Manufacturing Technology A^(*)STAR(Agency for ScienceTechnology and Research)2 Fusionopolis WayInnovisSingapore City 138634Singapore Department of Mechanical Engineering National University of SingaporeSingapore City 117575Singapore

The solid-state electrolyte in a solid-state battery acts as an electrons'barrier and an ions'bridge between the two *** solid-state electrolyte does not store the mobile ions,it is necessary to achieve a thin solid-state electrolyte to reduce the internal resistance and enhance the energy *** this work,a thin NASICON solid-state electrolyte,with a stoichiometry of Na_(3)Zr_(2)Si_(2)PO_(12),is fabricated by the tape-casting method and its thickness can be easily controlled by the gap between substrate and *** areal-specific resistance and the flexural strength increase with the electrolyte thickness.A solid-state sodium metal battery with 86 pm thick Na_(3)Zr_(2)Si_(2)PO_(12)exhibits a reversible specific capacity of 73-78 mAh g^(-1)with a redox potential of 3.4 V at 0.2 *** work presents the importance of electrolyte thickness to reduce internal resistance and achieve a high energy density for sodium batteries.

关键词： high energy density NASICON solid-state battery solid-state electrolyte tape casting