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℃ of the composites increases and ranges from 7.23×10-6 to 10.4×10-6 K-1, but thermal conductivity declines gradually at the same time. With the increase of Si content in the Al matrix, CTE of the composites declines and thermal conductivity also declines but not linearly, when Si content is up to 7%, the average thermal conductivity is 140.4 W/(m?K), which is close to that of the SiCp/1060Al composite (144.6......
Effect of carbide formers on microstructure and thermal conductivity of diamond-Cu composites for heat sink materials XIA Yang(夏 扬), SONG Yue-qing(宋月清), LIN Chen-guang(林晨光), CUI Shun(崔... of the carbide forming element additives on the microstructure and thermal conductivity of diamond composites was investigated. It is found that the composites fabricated with Cu-0.5B coated diamond......
of the Y2SiO5 ceramic increased linearly from 45% to 72%, while the compressive strength declined from 23.2 to 3.1MPa. The thermal conductivity of Y2SiO5 decreased from 1.34W/mK for the dense bulk...Porous Y2SiO5 Ceramic with Low Thermal ConductivityDuanyang Li 1,2) and Meishuan Li 1) 1) High Performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute of Metal......
Numerical analysis for peristaltic transport of Carreau-Yasuda fluid with variable thermal conductivity and convective conditionsF. M. Abbasi1, T. Hayat2, 3, B. Ahmad3(1. Department of Mathematics... in the presence of velocity slip and convective boundary conditions. Thermal conductivity of the fluid is taken to be temperature dependent. Lubrication analysis is used in the formulation of the problem......
Effects of deposition parameters on microstructure and thermal conductivity of diamond films deposited by DC arc plasma jet chemical vapor deposition QU Quan-yan(瞿全炎)1, 2, QIU Wan-qi(邱万奇)1, ZENG... deposition technique. The structure of the film was characterized by scanning electronic microcopy(SEM) and laser Raman spectrometry. The thermal conductivity was measured by a photo thermal deflection......
of thermal expansion (7.5×10-6 ℃-1) and high thermal conductivity ranging from 126 to 157.9 W/(m·℃). With increasing temperature, the specific capacity and the average coefficient of thermal expansion increases monotonically, the thermal diffusivity and the thermal conductivity decrease gradually. The specific capacity, average coefficient of thermal expansion, thermal diffusivity and the thermal......
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Thermal Conductivity and Heat Transfer Coefficient of Concrete郭利霞North China University of Water Resources and Electric Power摘 要:A very simple model for predicting thermal conductivity based on its definiensis was presented. The thermal conductivity obtained using the model provided a good coincidence to the investigations performed by other authors......
High porosity and low thermal conductivity high entropy(Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2CHeng Chen1,2,Huimin Xiang1,Fu-Zhi Dai1,Jiachen Liu2,Yiming Lei3,Jie Zhang3,Yanchun Zhou1,21. Science and Technology... thermal conductivity and densification of porous structure at high temperatures.In order to overcome these obstacles,herein,porous high entropy(Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C was prepared by a simple......
infiltration casting system and the traditional process respectively. The experimental results show that the thermal conductivity coefficients of aluminum foams prepared by two different infiltration methods have similar increasing trend with the increase of particle size; along with the reducing porosity, the thermal conductivity coefficients will be enhanced oppositely. However, with the same particle......
