The role of processing environment is also discussed. The diffusion coefficient of Al in FeAl is about 10−11 m2/s at 1150 °C for the material studied, with grain sizes between 0.5 and 5 μm. Grain boundaries are concluded to have a large effect on the global diffusion of Al in ...
The infinite dilution diffusion coefficient for Al(OH)4− necessary to calculate fluxes of dissolved Al between sediments and overlying waters, was determined at 25°C. Measurements were made using the diaphragm-cell method by diffusing Al(OH)4− spiked KBr solutions against KCL over a range ...
The diffusion coefficient of Sc in dilute Al-Sc alloys has been determined at 748 K, 823 K, and 898 K (475 A degrees C, 550 A degrees C, and 625 A degrees C, respectively) using semi-infinite diffusion couples. Good agreement was found between the results of the present study and bo...
DIFFUSION COEFFICIENT 来自 掌桥科研 喜欢 0 阅读量: 16 作者: IL Mostinsky 摘要: It is commonly accepted that difficul-ties exist in the measuring of coeffi-cient of diffusion of active componentsin liquid alloy.Mr.Su Mingzong et al ofChang Chun Applied Chemistry Institute,Academia Sinica,...
The nonmonotonic concentration dependence of the mean activity coefficient of electrolytes is a result of a balance between solvation and ion-ion correlations J. Chem. Phys. 133, 154507 (2010); 10.1063/1.3489418 Cross stream chain migration in nanofluidic channels: Effects of chain length, channel...
机械弥散系数=平均流速v（average linear velocity）*弥散长度aL(longitudinal dispersivity)Dz=aL*v 图1...
The drift in the potential-pH response is believed to be due to the surface layer, which affects proton diffusion onto the oxide film of the Al 2O 3-gate ion selective field effect transistor. The diffusion coefficient of proton in aluminum oxide thin film using the potential-pH response ...
The diffusion coefficient of iron at 850-degrees-C was about 2 x 10(-14) cm2/s and was independent of nitrogen content, whereas the values for sodium at 690-degrees-C decreased from 5.89 x 10(-13) to 1.74 x 10(-13) cm2/s with increase in nitrogen content from 4.12 to 8.09 at%...
Encyclopedia of Separation Science Reference work1993,Encyclopedia of Separation Science L.S.Ettre Explore book 3.4Diffusion 3.4.01 Thediffusion coefficient(D) is the amount of a particular substance that diffuses across a unit area in 1 s under the influence of a gradient of one unit. ...
Measurement of the diffusion coefficient of sulfur hexafluoride in water(六氟化硫在水中扩散系数的测定) 热度: Diffusion Coefficient and Equilibrium Solubility of Water 热度: 二氧化碳在水中扩散系数的实验测定和计算 热度: JOURNALOFGEOPHYSICAL RESEARCH, ...