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J. Cent. South Univ. (2012) 19: 2411-2415 DOI: 10.1007/s11771-012-1289-6 Microstructure characterization of NiFe2O4-NiO solid-solid diffusion couple SHI Kai-hua(时凯华)1,2, ZHOU Ke-chao(周科朝)1,2, ZHANG... by means of diffusion couple technique. NiFe2O4/NiO diffusion couple with plane interfaces was made by clamping method and sintering at 1 300 ℃ for 10 h. Scanning electronic microscopy (SEM) and energy......
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Diffusion coefficient of Ti4+ in calcium ferrite/calcium titanate diffusion coupleWang Wei,Hong-rui Yue,Xiang-xin XueSchool of Metallurgy,Northeastern University摘 要:This study investigated the interdiffusion of calcium ferrite/calcium titanate system in the time range of 0–120 min by the diffusion couple method in a CO/N2 reducing atmosphere at 700......
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on the growth of the diffusion layer in Al-Zn diffusion couple was studied. The thickness of the diffusion layer was examined. The results show that the alternative magnetic field increases the thickness...Effect of alternative magnetic field on the diffusion layer growth in Al/Zn coupleLIU Xiaotao, CUI Jianzhong, WU Xiaoming, GUO Yanhui, and ZHANG Jun The Key Laboratory of Electromagnetic Processing......
solution formed from Fe2Ti and Fe2Y are detected, which is in good agreement with the literature information. Key words: Fe-Ti-Y; thermodynamic calculation; Fe11TiY; diffusion couple diffusion couple, which was wrapped in Mo foil. The Fe-Ti-Y diffusion couples as shown schematically in Fig.1 were annealed in a diffusion furnace at (1 273±1) K......
the interdiffusion activation energies. Key words: Ni-Cu system; high magnetic field; atomic interdiffusion; diffusion couple 1 Introduction Enormous amounts of magnetization energy can be transferred.... The couple was taken out and cooled down in the air. At last, the couple was cut into rectangular prisms with dimensions of 10 mm× 5 mm × 5 mm. They were then subjected to diffusion annealing according......
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decomposition, a phase field model combined with elastic strain field was employed. Microstructure evolutions of diffusion couple with spinodal decomposition in binary alloys were numerically simulated.... Key words: spinodal decomposition; concentration fluctuation; phase field method; layered structure; diffusion couple 1 Introduction The concentration gradient, mismatch degree and microstructure......
Al-Zn-Fe三元系相平衡优化及实验验证杨帆1,张捷宇2,李谦2,陈双林2,周国治2(1.上海市上海大学上海市现代冶金与材料制备重点实验室2.上海大学上海市现代冶金及材料制备重点实验室,上海 200072)摘 要:结合最新报道的Al-Zn-Fe三元系热力学数据,利用CALPHAD技术,对Al-Zn-Fe三元系的热力学模型参数进行优化;并制备Al96.75Zn3.25/Fe(at%)扩散偶,将其在300℃下退火52.5天后取出水淬,利用EPMA对扩散层中存在的相进行检测.研究结果表明,优化后的Al-Zn-Fe三......