共搜索到45374条信息，每页显示10条信息，共4538页。用时：0小时0分0秒625毫秒
J. Cent. South Univ. Technol. (2010) 17: 857-862 DOI: 10.1007/s11771-010-0567-4 Finite element model updating for large span spatial steel structure considering uncertainties TENG Jun(滕军)1, ZHU... are in good agreement with the measured data. Key words: model updating; uncertainty; interval analysis; multi-output support vector regression; large span spatial steel structure ......
......
Introduction The ideal thermoelectric(TE) materials should have large Seebeck coefficient(s), and high electrical conductivity?(σ) as well as low thermal conductivity(κ) [1-3]. The TE materials... temperature region. The highest ZT value is 0.034 at 800 K for the AgMo6Te8 sample. Key words: thermoelectric property; Chevrel phase; chalcogenide ......
in the traditional methods for synthesizing Mg2Sil-xSnx (x=0.2, 0.4, 0.6, 0.8) solid solutions, microwave irradiation techniques were used in preparing them as thermoelectric materials. Structure and phase composition of the obtained materials were investigated by X-ray diffraction (XRD). The electrical conductivity, Seebeck coefficient and thermal conductivity were measured as a function of temperature......
refers to α2/ρ, which is a very important representation parameter for the thermoelectric properties of the materials. Fig.4 shows the temperature dependence of power factor of FeSi2 and Fe0.92Mn0.08Si2....: β-FeSi2; mechanical alloying; thermoelectric properties 1 Introduction Nowadays, thermoelectric materials are receiving extensive attention for various practical applications in power generators......
of preparation methods on thermoelectric properties of N-type Bi2Te2.4Se0.6 bulk alloys YIN Zhen-zhong, ZHU Tie-jun, SHEN Jun-jie, YANG Sheng-hui, ZHAO Xin-bing (State Key Laboratory of Silicon Materials... quenching; thermoelectric properties; thermoelectric materials 当今世界能源日益短缺,人类的生产与生活中产生的废热如果能利用热电发电装置转换为电能,将大大提高能源利用效率[1].热电器件由于质量轻,尺寸小,无噪声,无污染而受到越来越多的关注[2].表征热电材料的性能指数为无量纲优值,其中,,,T分别为Seebeck系数,电导率,热导率和绝对温......
Application of phase diagram calculations to development of new ultra-high temperature structural materials YANG Ying(杨 莹)1, B.P. Bewlay2, CHEN Shuang-lin(陈双林)1, Y.A. Chang3 1. CompuTherm LLC... with a balance of properties for high-temperature applications. Key words: intermetallics, phase diagram calculation; Mo-Si-B-Ti; Nb-Cr-Si-Ti; high temperature structural materials ......
Thermoelectric Properties of CexCo4Sb12 Prepared by MA-SPS 周美玲1,张久兴1,刘科高1,张隆1,路清梅1,刘丹敏1 (1.The Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100022, China) Abstract:Starting with elementary powders, thermoelectric materials CexCo4Sb12 were prepared by mechanical alloying and spark plasma sintering (MA-SPS). XRD analyses reveal......
Preparation of large particle rare earth oxides by precipitation with oxalic acid WANG Mitang1,LI Mei1,SHI Zhenxue1,LIU Zhaogang1,HU Yanhong1 (1.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China) Abstract:The large particle CeO2 and Y2O3 were prepared using oxalic acid as precipitator. The effects of operational parameters......
Cerium dioxide with large particle size prepared by continuous precipitation WANG Mitang1,LI Mei1,WU Jinxiu1,LIU Zhaogang1,HU Yanhong1 (1.School of Material and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,China) Abstract:Cerium dioxide (CeO_2) has attracted much attention and has wide applications such as automotive exhaust catalysts, polishing materials......
