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Abstract In sintered NdFeB magnets, additive elements for increasing coercivity decrease residual magnetization. Also, fine magnetic powder oxidization prevents identification of the stoichiometry composition (Nd 2Fei14B).To improve the magnetic properties of a sintered NdFeB magnet, the authors...
Abstract The composition and structure of glass (silicate) film formed during secondary recrystallization annealing of grain- oriented 3% Si steel using aluminum nitride as an inhibitor was investigated. The glass film consisted of spinel (MgO AI2O3) and forsterite [2(MgO) SiO2], and the AI2O3...
Abstract The use of an atomizer for accelerated cooling is discussed. An atomizer is an effective tool for controlling the microstructure and properties of a microalloyed steel because of its flexibility of operation and control of cooling rate over a broad range of temperatures. Some basic...
Abstract For further improvement in achieving extremely high magnetic properties of Nd- Fe- B sintered magnets, extensive investigation has been done to densify the magnet up to the theoretical value, to increase the volume fraction of the Nd 2Fe14B matrix phase, and to achieve a high degree of...
Abstract As- received 2090 Al- Li hot- rolled plate was homogenized at 482 °C for 10 h and cold worked to 95% reduction in thickness. The rolling modes were varied. One group of samples was rolled longitudinally parallel to the hot- rolling direction, the second transversely to the rolling...
Abstract The effect of initial texture before cold rolling on secondary recrystallization of grain-oriented electrical steel was investigated using thin cast sheets and conventional hot-rolled sheets as initial materials. The main texture component of the surface layer of thin cast sheets is...
Abstract Rolling large- diameter hardened steel balls over the surface of high- permeability grain- oriented electri-cal steel allows lines of plastic deformation to be laid down. Choice of proper Young’s modulus and ball diameter enables artificial grain boundaries to be created, producing...
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