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Sm-Co magnet was attracted attention due to its high Curie temperature and superior comprehensive magnetic properties [1-5]. Different with powder metallurgy method, melt spinning is another efficient way to prepare Sm-Co magnet. The quenching speed in melt spinning is a critical factor to obtain ribbons with high magnetic properties. Recently, D.Y. Feng [6] et al. reported that intrinsic coercivity...
General Motors Corporation which is the first companyused the rapid quenching technique to prepare the NdFeB powder whit the nanocrystalline structure. Now, the single roller melt-spinning methodwhich is widely used to prepare the NdFeB powderhas become one of the research hot spots of magnetic materials today.
In this study, we propose a methodology to estimate 3D+time maps of left ventricular fibre strain from human structural and dynamic MRI data. A finite element model integrates fibre principal direction throughout the left ventricle from an ex vivo human diffusion tensor MRI acquisition and motion from tagged MRI. This combination enables the estimation of fibre strain and its variation throughout...
Corrosion-related defects of pure iron, and AISI 304 and 316 stainless steels were investigated by measuring Doppler broadening energy spectra (DBES) of positron annihilation. Defect profiles of the S parameter from DBES as a function of positron incident energy up to 30keV (i.e. ~1μm depth) were analyzed. When the sample is treated with various anodic potentials (0-4V), a significant increase in...
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