Papers by Author: Xue Feng Zhang

Abstract: In this work we have studied the effects of Zn and ZnO addition on grain boundaries in the magnetic properties of NdFeB magnets. Zn and ZnO were added at the grain boundaries by double alloy process. Study on Zn and ZnO were effected of sintered NdFeB permanent magnetic materials .Results show that Zn and ZnO powder were added to grain boundary of improves magnets, coercivityHcj, remanenceBr, maxi-mum magnetic energy (BH)max, Zn was added1.2wt%,ZnO was added 1wt% to the maximum value, continue to add drop。Zn powders were added to the intergranular regions of NdFeB magnets, and their effects on the magnetic properties and corrosion resistance were investigated. In the scanning electron microscope, energy spectrum analysis showed that Zn and ZnO did not appear after entering the new metallographicals, Zn or ZnO distributed in where the main enrich at the Nd-rich phase[1]

Abstract: This paper introduces an online thickness monitoring technology of blast furnace stack. It describes the composition of monitoring technology, the basic principles and requirements of thickness measurement, and the features and functions of monitoring technology. Finally, the application of this monitoring technology in blast furnace stack thickness is analyzed and summed up.

Abstract: The uniform of the heat treatment process and NdFeB alloy powder metallurgy technology on the α-Fe soft phase effects. Experimental results show that the uniform of the heat treatment process can significantly reduce the α-Fe soft phase of the content, and the thinning, also found that the remaining α-Fe soft phase sintering and after annealing and hard to deal with after the occurrence of magnetic exchange coupling And its magnetic properties can have a greater impact, so this experiment for the Development of the fourth generation of rare earth permanent magnets laid the foundation.