{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"A cost-effective technique, including nanocrystalline powder preparation using a modified Pechini method and a two-step low-temperature sintering route, was developed for the synthesis of high performance La2Mo2O9-based oxide-ion conductors. The optimum parameters of the compaction pressure, the first step and the second step sintering temperatures for the synthesis of fine grained, high density and uniform La2Mo2O9-based oxide-ion conductors were determined by a series of sintering experiments. High density and uniform sintered La2Mo2O9 samples with average grain size from 0.8 to 5 μm and La1.96K0.04Mo2O8.96 sample with average grain size as small as 500 nm were synthesized by using this cost-effective method. The impedance measurement results show that the as-fabricated La2Mo2O9-based ceramics possess much higher ionic conductivity than that obtained by solid state reaction method. It is found that in the range of 0.8{5 μm the grain size of dense La2Mo2O9 samples prepared from the nanocrystalline powders has little influence on their conductivities.","authors":[{"authorName":"Jianxin WANG","id":"d12566a0-b77f-491f-ae95-2b6c12774fea","originalAuthorName":"Jianxin WANG"},{"authorName":" Qin WANG","id":"70ab9506-d85f-49bc-a0e1-a1dec257ceff","originalAuthorName":" Qin WANG"},{"authorName":" Xianping WANG","id":"fc78da31-e293-48bd-b514-34cdbbdd86e8","originalAuthorName":" Xianping WANG"},{"authorName":" Chun LI","id":"6992687d-2658-4b8b-97dc-8ffe2e8e7612","originalAuthorName":" Chun LI"},{"authorName":" Qianfeng FANG","id":"4dec7b61-6931-423a-9ee7-f884cb994055","originalAuthorName":" Qianfeng FANG"}],"categoryName":"|","doi":"","fpage":"761","id":"fcac701e-7d18-460f-bc20-9a4ba7afffc4","issue":"5","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术(英文)"},"keywords":[{"id":"5147c5c4-adbd-4c45-b943-1e8edad1065e","keyword":"Oxide ion conductor","originalKeyword":"Oxide ion conductor"},{"id":"148666dc-8a97-4e7c-aa7e-2e1a8225dc9e","keyword":"null","originalKeyword":"null"},{"id":"9acf1f1a-a36c-4c0f-89d1-61c779460109","keyword":"null","originalKeyword":"null"},{"id":"65a6ed18-a3fd-4b9f-800b-7d0f90738810","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1005-0302_2008_5_13","title":"Synthesis and Characterization of Fine Grained High Density La2Mo2O9-based Oxide-ion Conductors","volume":"24","year":"2008"},{"abstractinfo":"A series of solid electrolytes KNb1-xMgxO3-delta (x = 0.0-0.3) with an orthorhombic perovskite structure was synthesized under high temperature and high pressure (4.0GPa,870degreesC). The effect of Mg-doping on the structure transformation and electrical properties was systematically studied in this paper. The Raman spectra at different temperatures and differential thermal analysis results indicate that the structure of the samples transforms from ferroelectric orthorhombic to tetragonal phase, and finally to paraelectric cubic phase with increasing temperature. Weakening of the coupling effect of A-site cation on BO6 octahedra and the B-site cation contribution to spontaneous polarization, as a result of the Mg2+ doping in KNbO3, leads to the decrease of Curie temperature. The Curie point of KNb0.85Mg0.15O2.775, decreasing by about 40degreesC in comparison with KNbO3, is 392degreesC. Impedance spectroscopic data show that the conductivity of the samples is ionic, the grain-boundary effect is very significant, and the conductivity of the samples is determined mainly by the grain-boundary. Mg-doping increases the oxygen ion conductivity of the samples. KNb0.9Mg0.1O2.85 has the highest conductivity of 1.2 x 10(-3)S/cm at 700degreesC in all of the samples, which makes it a kind of promising oxygen ionic conduction materials.","authors":[],"categoryName":"|","doi":"","fpage":"1474","id":"66ffc0cf-0c21-4f9d-93a4-665a83173458","issue":"6","journal":{"abbrevTitle":"APS","id":"36b887b6-8083-4722-8735-38a6f6f18130","issnPpub":"1000-3290","publisherId":"APS","title":"Acta Physica Sinica"},"keywords":[{"id":"bae8d513-68f0-4ab3-91d5-7926b7d79adc","keyword":"perovskite;ionic conduction;KN1-xMgxO3-delta;high-temperature and;high-pressure;ferroelectric phase-transition;hydrothermal synthesis;phase-transitions;(ceo2)(1-x)(bio1.5)(x);electrolyte;ceramics;modes;knbo3","originalKeyword":"perovskite;ionic conduction;KN1-xMgxO3-delta;high-temperature and;high-pressure;ferroelectric phase-transition;hydrothermal synthesis;phase-transitions;(ceo2)(1-x)(bio1.5)(x);electrolyte;ceramics;modes;knbo3"}],"language":"en","publisherId":"1000-3290_2003_6_1","title":"Preparation and characterization of a new perovskite-type oxide ion conductor KNb1-xMgxO3-delta","volume":"52","year":"2003"},{"abstractinfo":"采用柠檬酸盐法制备了 La0.9Sr0.1Ga0.8Mg0.23-α(LSGM)粉体材料.TG和 DTA分析表明,凝胶在265~309℃下分解为相应的氧化物.XRD测试表明,凝胶在1300℃以上煅烧时,转变为简单立方钙钛矿结构的纯相产物.1450℃下烧结体的相对密度为88%,其复阻抗特性表明产物中没有明显的晶界过程,且在800℃下的电导率为 2.1×10-2Scm-1,活化能为0.98eV.","authors":[{"authorName":"郑文君","id":"b146aaab-d080-4504-a8e2-48f08f0f78ad","originalAuthorName":"郑文君"},{"authorName":"武丽艳","id":"48fefd49-65e0-4efd-9b42-cad972cc0f88","originalAuthorName":"武丽艳"},{"authorName":"彭定坤","id":"7f1f335c-fc5e-4394-821a-e562038455f9","originalAuthorName":"彭定坤"},{"authorName":"孟广耀","id":"2f7a2cbc-8974-48f3-8995-78916890169a","originalAuthorName":"孟广耀"}],"categoryName":"|","doi":"","fpage":"358","id":"4d5a99fa-e9aa-4ade-afff-317ea214f04f","issue":"2","journal":{"abbrevTitle":"WJCLXB","coverImgSrc":"journal/img/cover/WJCLXB.jpg","id":"62","issnPpub":"1000-324X","publisherId":"WJCLXB","title":"无机材料学报"},"keywords":[{"id":"e2a17e6d-aa5f-438d-b380-8113eb2ac5cc","keyword":"柠檬酸盐法","originalKeyword":"柠檬酸盐法"},{"id":"be60f31e-0238-423d-8c2d-a57dc9bdda08","keyword":" oxide-ion conductor","originalKeyword":" oxide-ion conductor"},{"id":"6d440613-ac22-4673-b856-1dee77d1a274","keyword":" LSGM","originalKeyword":" LSGM"}],"language":"zh","publisherId":"1000-324X_2001_2_12","title":"La0.9Sr0.1Ga0.8Mg0.2O3-α的柠檬酸盐法制备和表征","volume":"16","year":"2001"},{"abstractinfo":"","authors":[{"authorName":"","id":"68bf2a67-faf1-4df7-ba0a-c947aa54f3db","originalAuthorName":""},{"authorName":"","id":"d229c566-d19a-4a62-bf10-7a02e6f1b6f9","originalAuthorName":""},{"authorName":"","id":"7777a259-98ba-49dc-bf45-7c9aa8ce12f7","originalAuthorName":""},{"authorName":"","id":"0267dcfd-fdb1-4508-b2f2-42ccf4cb4c09","originalAuthorName":""},{"authorName":"","id":"0f7a8741-2e01-442f-94e7-502a720de5ef","originalAuthorName":""}],"doi":"","fpage":"761","id":"f8d16e0a-d3c0-4265-9137-1710acb91f3d","issue":"5","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术(英文)"},"keywords":[{"id":"43d08248-a0a5-419c-bd8e-cd0a8636fb17","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"clkxjsxb-e200805018","title":"Synthesis and Characterization of Fine Grained High Density La2Mo2O9-based Oxide-ion Conductors","volume":"24","year":"2008"},{"abstractinfo":"Chromium oxide (Cr2O3) films were deposited on stainless steel substrate by arc ion plating (AIP) technique. The results show that the flow rate of oxygen and bias voltage affected the microstructure, surface morphology and chemical composition of Cr2O3 films. The hardness of stoichiometric Cr2O3 film obtained at flow oxygen rate of 130 sccm and a bias voltage of -200 V reaches a maximum value of 36 GPa, much higher than that of films obtained by other deposition methods. (C) 2004 Elsevier B.V. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"1993","id":"b8448520-4505-4ebc-b3a9-dca680849eeb","issue":"14","journal":{"abbrevTitle":"ML","id":"90b15a58-51fc-41ad-8509-c2692f6a3f6e","issnPpub":"0167-577X","publisherId":"ML","title":"Materials Letters"},"keywords":[{"id":"d036ec2e-15b8-4136-bbea-cf3b2cf00bc2","keyword":"Cr2O3 films;arc ion plating;microstructure;mechanical properties;chemical-vapor-deposition;optical-properties;tin films;coatings","originalKeyword":"Cr2O3 films;arc ion plating;microstructure;mechanical properties;chemical-vapor-deposition;optical-properties;tin films;coatings"}],"language":"en","publisherId":"0167-577X_2004_14_1","title":"Microstructures and mechanical properties of chromium oxide films by arc ion plating","volume":"58","year":"2004"},{"abstractinfo":"The isothermal and cyclic oxidizing kinetics of Co40Cr alloy and its lanthanum ionimplanted samples were studied at 1 000 ℃ in air by thermal gravimetric analysis (TGA). Scanning electron microscopy (SEM) was used to examine the Cr2O3 oxide film′s morphology after oxidation. Secondary ion mass spectrum (SIMS) method was used to examine the binding energy change of chromium caused by Ladoping and its influence on the formation of Cr2O3 film. Acoustic emission (AE) method was used in situ to monitor the cracking and spalling of oxide films during oxidizing and subsequent aircooling stages. Laser Raman spectrum was used to examine the stress changes within oxide films. A theoretical model was proposed relating to the film fracture process and was used to analyze the AE spectrum both on time domain and AEevent number domain. It was found that lanthanum implantation remarkably reduced the isothermal oxidizing rate of Co40Cr and improved the anticracking and antispalling properties of Cr2O3 oxide film. The reasons for the improvement were mainly that the implanted lanthanum reduced the grain size and internal stress of Cr2O3 oxide, increased the high temperature plasticity of oxide film, and remarkably reduced the number and size of Cr2O3/Co40Cr interfacial defects.","authors":[{"authorName":"JIN Huiming","id":"3137a815-c29d-4598-b00f-8d5f35c0e5df","originalAuthorName":"JIN Huiming"},{"authorName":"ZHANG Linnan","id":"55645842-53a5-4216-9f89-bf845d8faf6e","originalAuthorName":"ZHANG Linnan"},{"authorName":"LIU Xiaojun","id":"dd72a26e-5e1c-4bf6-b57a-dbbe8b566f1f","originalAuthorName":"LIU Xiaojun"}],"categoryName":"|","doi":"","fpage":"79","id":"7a440f8b-8997-49ab-bbdd-afb5fef418eb","issue":"1","journal":{"abbrevTitle":"GTYJXBYWB","coverImgSrc":"journal/img/cover/GTYJXBEN.jpg","id":"1","issnPpub":"1006-706X","publisherId":"GTYJXBYWB","title":"钢铁研究学报(英文版)"},"keywords":[{"id":"93c1c9eb-bc66-48f5-9dcc-8ac2e89d2018","keyword":"oxidation;adhesion;acoustic emission;laser Raman;lanthanum","originalKeyword":"oxidation;adhesion;acoustic emission;laser Raman;lanthanum"}],"language":"en","publisherId":"1006-706X_2008_1_5","title":"Influence of Lanthanum IonImplantation on Adhesive Property of Oxide Film Formed on Co40Cr Alloy","volume":"15","year":"2008"},{"abstractinfo":"The oxygenion conductor, the reducing agent, and the molten oxide slag containing electroactive matter were used as constituent of a galvanic cell. Metal was directly electroreduced from molten slag using a shortcircuit galvanic cell. The following galvanic cell was assembled in the present experiment: graphite rod, [O]FeC saturated|ZrO2(MgO)|Cu(l)+(FeO)(slag), and molybdenum wire. The FeO electroreduction reaction was studied through measuring short circuit current by controlling factors such as temperature, the FeO content in molten slags, and the external circuit resistance. An overall kinetics model was developed to describe the process of FeO electroreduction. It was found that the modeled curves were in good agreement with the experimental values. The new oxide reduction method in the metallurgy with controlled oxygen flow was proposed and the metallurgical theory with controlled oxygen flow was developed.","authors":[{"authorName":"GAO Yunming","id":"83b4c37d-6bd3-4a71-ade0-249c3cb1dc05","originalAuthorName":"GAO Yunming"},{"authorName":"CHOU Kuochih","id":"23a4fbe1-9a5a-4be5-a4cf-9aa69dbb6d62","originalAuthorName":"CHOU Kuochih"},{"authorName":"GUO Xingmin","id":"468f64e2-806d-49c0-8f77-7f09af52f234","originalAuthorName":"GUO Xingmin"},{"authorName":"WANG Wei","id":"0ae81fc5-0230-40e4-8ece-c5439c0f8866","originalAuthorName":"WANG Wei"}],"categoryName":"|","doi":"","fpage":"16","id":"a753dfa1-1072-4618-a336-918ed251b79b","issue":"1","journal":{"abbrevTitle":"GTYJXBYWB","coverImgSrc":"journal/img/cover/GTYJXBEN.jpg","id":"1","issnPpub":"1006-706X","publisherId":"GTYJXBYWB","title":"钢铁研究学报(英文版)"},"keywords":[{"id":"21c89de5-33dd-49e0-bb8c-4855e3cd4202","keyword":"molten oxide slag;zirconia;galvanic cell;electroreduction;kinetics model","originalKeyword":"molten oxide slag;zirconia;galvanic cell;electroreduction;kinetics model"}],"language":"en","publisherId":"1006-706X_2007_1_1","title":"Electroreduction Kinetics for Molten Oxide Slags","volume":"14","year":"2007"},{"abstractinfo":"The directional solidification of Cu-0.8 wt pct Cr alloy was investigated for high-strength conductors. An in-situ composite material in which the matrix is in cellular morphology and the well-distributed eutectics around the cells is formed in the directional solidification process. In such microstructure, the cellular matrix is as conductor and the coated-around eutectics as reinforcement. The formation mechanism of this microstructure is discussed from the interfacial instability. As a result, the tensile strength of the material along the solidification direction is two times more than that of the conventionally cast one, while the electrical conductivity is reduced a little by comparison with the pure Cu.","authors":[{"authorName":"Hongquan WEN","id":"e30b6ccc-df6d-4e95-999d-fbb5d4549318","originalAuthorName":"Hongquan WEN"},{"authorName":" Xiemin MAO and Kuangdi XU (Institute of Materials Science and Technology","id":"b67a837f-0e18-498f-8c82-16d8c8d76ca3","originalAuthorName":" Xiemin MAO and Kuangdi XU (Institute of Materials Science and Technology"},{"authorName":" Shanghai University Shanghai 200072","id":"dcd99894-8713-4483-bf79-667a16d6487c","originalAuthorName":" Shanghai University Shanghai 200072"},{"authorName":" China)","id":"2b8702da-4d36-4b06-be7b-728da27e9b0a","originalAuthorName":" China)"}],"categoryName":"|","doi":"","fpage":"89","id":"f3502476-6fde-4a7d-972a-b6aec4a7a8af","issue":"1","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术(英文)"},"keywords":[],"language":"en","publisherId":"1005-0302_1998_1_11","title":"High Strength Conductor by Directional Solidification","volume":"14","year":"1998"},{"abstractinfo":"On the basis of the 120 x 120 complete energy matrix, the local lattice structures of the octahedral (CrO6)(9-) clusters for Cr3+ ions doping in a variety of oxide crystals with D-3d or C-3 nu site symmetry have been studied by employing two distorted parameters, respectively. By simulating the calculated EPR and optical spectra data to the experimental results, the local lattice structure parameters are determined unambiguously. It is shown, by means of a series of calculations, that although the local lattice structures around the M (M = Al3+, Ga3+, Li+, Sc3+, etc.) ions in host crystals are obviously different, the local lattice structures of the octahedral (CrO6)(9-) clusters in a variety of oxide crystals doped with Cr3+ ions are similar and fluctuant in the vicinity of that of the Cr2O3. This may be ascribed to the fact that there is the similarly octahedral (CrO6)(9-) clusters in a variety of oxide crystals doped with Cr3+ and the Cr2O3 crystal. Our viewpoint is consistent with that of Gaudry et al. [Phys. Rev. B 2003, 67, 094108].","authors":[],"categoryName":"|","doi":"","fpage":"737","id":"266338db-ee64-4fc3-93a5-ec876a26d731","issue":"4","journal":{"abbrevTitle":"JOPCA","id":"eee01eb5-ac62-471b-a482-be49550093af","issnPpub":"1089-5639","publisherId":"JOPCA","title":"Journal of Physical Chemistry A"},"keywords":[{"id":"16ac4411-38ae-40b5-8a87-d4e4f5999f39","keyword":"electron-paramagnetic-resonance;superposition-model analysis;phase-transitions;cubic field;cr-3+ ions;symmetry;ruby;fluorescence;centers;alpha-liio3","originalKeyword":"electron-paramagnetic-resonance;superposition-model analysis;phase-transitions;cubic field;cr-3+ ions;symmetry;ruby;fluorescence;centers;alpha-liio3"}],"language":"en","publisherId":"1089-5639_2008_4_1","title":"Local lattice structure study of the octahedral (CrO6)(9-) clusters for Cr3+ ion doping in a variety of oxide crystals by simulating the corresponding EPR and optical spectra","volume":"112","year":"2008"},{"abstractinfo":"The molecular based electrical conductor Ni(C3S5)2 has been prepared and its conductivity has been measured from room temperature down to 60 K. Above 167 K Ni(C3S5)2 exhibits a semiconductive behaviour, below this temperature it turns to exhibit metallic conductivity. Based on a tight-binding energy band calculation, an expression for the number of conducting electrons has been deduced. The calculated conducting activation energy is quite well in accordance with the measuring value.","authors":[{"authorName":"Hong LEI (Dept. of Electronic Engineering","id":"784a4d87-ac6b-471e-a3ca-0ab96147247f","originalAuthorName":"Hong LEI (Dept. of Electronic Engineering"},{"authorName":" Shandong University","id":"4621500d-879b-4b5b-b373-920438769448","originalAuthorName":" Shandong University"},{"authorName":" Jinan 250100","id":"691acf5e-1abe-4177-bc78-9073f670550e","originalAuthorName":" Jinan 250100"},{"authorName":" China)Qi FANG and Minhua JIANG (Institute of Crystal Materials","id":"556c3479-3809-4fad-a4ff-c7142aa13d6b","originalAuthorName":" China)Qi FANG and Minhua JIANG (Institute of Crystal Materials"},{"authorName":" Shandong University","id":"d63f8840-1580-4c26-84d0-8f85bc6913d0","originalAuthorName":" Shandong University"},{"authorName":" Jinan 250100","id":"07a643c7-7e6a-40b6-9358-070e20f377c2","originalAuthorName":" Jinan 250100"},{"authorName":" China)Yueming SUN (Dept. of Chemistry Southeast University Nanjing 210093","id":"11cb2122-31ea-4ad1-bfdb-1173064be921","originalAuthorName":" China)Yueming SUN (Dept. of Chemistry Southeast University Nanjing 210093"},{"authorName":" Chi","id":"0bf6c9c3-d5fe-442b-9266-0b8b4257c739","originalAuthorName":" Chi"}],"categoryName":"|","doi":"","fpage":"457","id":"0395d41b-6729-4992-887b-40710ed71384","issue":"6","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术(英文)"},"keywords":[],"language":"en","publisherId":"1005-0302_1996_6_12","title":"Molecular Electrical Conductor Ni(C_3S_5)_2","volume":"12","year":"1996"}],"totalpage":262,"totalrecord":2611}