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Ti-Si-C三元系金属间化合物Gibbs生成自由能估算甘国友,陈敬超,孙加林,杜焰,周晓龙,陈秀华摘 要:根据最小自由能原理和向下凸曲面性质,推导出估算三元系和二元系金属间化合物Ｇｉｂｂｓ生成自由能的判断式,并以Ｔｉ－Ｓｉ－Ｃ三元系为例,估算了二元相和三元相的Ｇｉｂｂｓ生成自由能．关键词:Ti-Si-C三元系;金属间化合物;Gibbs生成自由能;......
Analysis and direct calculation of the energy migration interaction parameter in high concentration Nd3+ doped YAG laser crystal GUO Yanyan1,WANG Dianyuan2 (1.College of Mechanical Engineering Jiujiang University Jiujiang 332005 China;2.College of Science, Jiujiang University, Jiujiang 332005, China) Abstract:The energy migration interaction parameter CDD in high concentration Nd3+ doped YAG......
the strain in the film is relaxed entirely by the formation of the dislocations, the strain energy disappears, its interface free energy is the energy of misfit dislocations. When the energy of film reaches... our theory and other theoretical values for the interface energy. The free energy of the solid-solid interface depends on not only the melting enthalpy, but also the vibrational component......
that the leaching process can be described with a reaction model of shrinking core. The reaction can be divided into three stages. The first stage is the dissolution of free copper oxide and copper oxide... activation energy is 43.26 kJ/mol. During this process, the chemical reaction is the control step, and the reaction order of H2SO4 is 0.433 84. The third stage is the leaching of copper oxide wrapped......
conductivity of Na3AlF6-AlF3-Al2O3-CaF2-LiF(NaCl) system was studied by this method. Activation energy of conductance was obtained based on the experiment results. The experiments show that electrical... by the Choudhary Model. Key words: electrical conductivity; aluminium electrolyte; additive; superheat; activation energy of conductance ......
Characterization of Ti-50%Al composite powder synthesized by high energy ball millingFANG Wen-bin, LI Xue-wen, SUN Hong-fei, DING Yong-feng(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:The Ti-50%Al (molar fraction) composite powder was synthesized by high energy ball milling (HEBM). The characteristics of the composite particles......
J. Cent. South Univ. (2012) 19: 803-808 DOI: 10.1007/s11771-012-1075-5 Weighting indicators of building energy efficiency assessment taking account of experts’ priority YANG Yu-lan(杨玉兰), TAI... 2012 Abstract: Analytic hierarchy process (Group AHP) is combined with two different methods of assigning experts’ priority to weight indicators in building energy efficiency assessment. One......
J. Cent. South Univ. Technol. (2009) 16: 0265-0268 DOI: 10.1007/s11771-009-0045-z A sink moving scheme based on local residual energy of nodes in wireless sensor networks TAN Chang-geng(谭长庚... in sensor networks, sensor nodes located near the sink have to forward the data received from all other nodes to the sink, which depletes their energy very quickly. A moving scheme for the sink based on local......
J. Cent. South Univ. Technol. (2009) 16: 0154-0159 DOI: 10.1007/s11771-009-0026-2 Application of empirical mode decomposition based energy ratio to vortex flowmeter state diagnosis SUN Zhi-qiang(孙志强)1, ZHANG Hong-jian(张宏建)2 (1. School of Energy Science and Engineering, Central South University, Changsha 410083, China; 2. Department of Control Science and Engineering, Zhejiang University......
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