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DEPENDENCE OF MAGNETISM OF Nd-Fe-B SINTERMAGNETS ON ORIENTATION MAGNETIC FIELD

GAO Ruwei , XIAO MingshanShandong University , Jinan , ChinaZHOU Shouzeng , LIFubiao , ZHANG LidongNational Laboratory , University of Science and Technology Beijing , China Manuscript received 11 April , 1994

金属学报(英文版)

The effect of the orientation magnetic field on the permanent magnetism of Nd-Fe-B sintermagnets is investigated. The results show that the variation law of magnetism with orientation field obviously changes at the critical orientation field and the intensity of the orientation field should he determined by the dimension ratio of the magnet for effectively utilizing its magnetic energy product.

关键词: orientation magnetic field , null , null , null

STUDY OF MICROSTRUCTURE IN AN Au-Ni-Fe-Cr-In-Zr ALLOY

GAO Wen and LI ChunzhiInstitute of Aeronautical Materials , Beijing , Beijing Laboratory of Electron Microscopy , Chinese Academy of Sciences , Beijing , China Manuscript received 11 April , 1994

金属学报(英文版)

The mierostructure of an AuNiFeCrlnZr alloy has been studied by means of TEM,CBED. SEM and EDS. The results show that the alloy contains Au-rich solid solution, Ni-rich solid solution, and η- and -ωphases. The η-phase containing 90at%Cr possesses an orlhorhombic .structure with a = 0.448nm. b = 1.40nm and c = 1.21nm, and space group of Pmm2 or Pmmm. The ω-phase is an fee structure with a = 0.682nin and space group of Fm3m. The ω-phase dispersed in the alloy matrix plays an important role in increasing strength and wear resistance of the alloy.

关键词: Au-base alloy , null , null , null

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