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Effect of Rare Earths on Diffusion Coefficient and Transfer Coefficient of Carbon during Carburizing 刘志儒1,阎牧夫1 (1.School of Materials Science and Engineering, Harbin Institute of Technology,) Abstract:The diffusion coefficient of carbon in surface layer of steel-20 rare earth carburized at 880 ℃ and 900 ℃ for 8 h was calculated by substituting the measured layer depths into the diffusion......
Diffusion Coefficient of Lanthanum in Al-Cu Alloy常开国,赵敏寿摘 要:<正> In molten salt media,the rate of mass transfer process is slower than... is the rate determining step in anelectrochemical reaction.The diffusion coefficient of lanthanum in Al-Cu alloy is determined byelectrochemical method,which will provide very important data for the study......
Time Dependent Chloride Diffusion Coefficient in Concrete宋鲁光1,2,孙伟1,2,GAO Jianming1,21. School of Materials Science and Engineering, Southeast University2. Jiangsu Key Laboratory of Construction... different meanings, they have different manners when handled in service life prediction models. Time dependency of chloride diffusion coefficients in concrete was obtained by fitting experimental data......
Diffusion coefficient of Ti4+ in calcium ferrite/calcium titanate diffusion coupleWang Wei,Hong-rui Yue,Xiang-xin XueSchool of Metallurgy,Northeastern University摘 要:diffusion. The diffusion coefficient and the Ti4+ concentration in the calcium ferrite/calcium......
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Modelling of Time Dependency of Chloride Diffusion Coefficient in Cement Paste张明中摘 要:A computer-based model and method was presented to predict the time... of chloride through the saturated cement paste. Based on the Fick’s first law, the chloride diffusion coefficient can be calculated. In this method, the influences of age and w/c ratio on the chloride......
Influence of Binder Composition and Concrete Pore Structure on Chloride Diffusion Coefficient in Concrete黎鹏平,苏达根Key Laboratory of Specially Functional Materials of the Ministry of Education, South China University of Technology摘 要:The influence of binder composition and pore structure of concrete on chloride diffusion coefficient in concrete were......
in Fe, decreasing the diffusion coefficient of hydrogen elements, Mn element did not produce deep trap in Fe, decreasing the diffusion coefficient slightly and TiN in Fe produced very deep "trap" decreasing the diffusion coefficient obviously. The calculation results were in agreement with experiment results. Key words:hydrogen diffusion; SCM-DV-Xα method; cluster; [全文内容正在添加中] ......
Investigations on structure and proton diffusion coefficient of rare earth ion (Y3+/Nd3+) and aluminum codoped α-Ni(OH)2 LIU Aifang1,LI Yanwei1,SONG Sha1,LIU Changjiu1 (1.Key Laboratory... and 2.8×10-10 cm2/s, respectively. Key words:α-nickel hydroxide; chemical coprecipitation; proton diffusion coefficient; rare earths; [全文内容正在添加中] ......
Multi-scale Modeling of the Effective Chloride Ion Diffusion Coefficient in Cement-based Composite Materials孙国文1,2,孙伟11. Jiangsu Key Laboratory of Construction Materials,Southeast University摘 要:N-layered spherical inclusions model was used to calculate the effective diffusion coefficient of chloride ion in cement-based materials by using multi-scale......