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Volume 10 Issue 1
Nov.  2021
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Article Contents
Zhang Lidong, Hu Qin, Zhou Shouzeng. The Study of Cheap R-Fe-B Syetem Sintered Permanent Magnetic Materials[J]. Chinese Journal of Engineering, 1988, 10(1): 23-29. doi: 10.13374/j.issn1001-053x.1988.01.005
Citation: Zhang Lidong, Hu Qin, Zhou Shouzeng. The Study of Cheap R-Fe-B Syetem Sintered Permanent Magnetic Materials[J]. Chinese Journal of Engineering, 1988, 10(1): 23-29. doi: 10.13374/j.issn1001-053x.1988.01.005

The Study of Cheap R-Fe-B Syetem Sintered Permanent Magnetic Materials

doi: 10.13374/j.issn1001-053x.1988.01.005
  • Received Date: 1987-01-23
    Available Online: 2021-11-15
  • For comprehensive utilization of the rare earth resources in our puntry and to decrease the cost of Nd FeB magnets, the relationshi s between the magnetic properties and composition, processing of the cheap R-Fe-B system permanent magnets have been studied in this paper (R=Pr + Nd, or R=Ce + Pr + Nd). By addition of Al, the coercivity of alloy increases.The optimum magnetic properties of (NdPr)-Fe-B alloy are. Br=1.25T.MHc=714.3kA/m,(BH)m=297.2kJ/m3.The magnetic properties of (PrNd)1-y Cey-Fe-B alloy(y=0~0,5)decrease with increasing Ce content. The magnetic properties are as follows:Br=1.25T, MHc=825.4 kA/m, (BH)m=297.5kJ/m3 for the alloy of y=0.03; Br=1.20T, MHc=563.6kA/m, (BH)m=246kJ/m3 for the alloy of y=0.3, Br=1.13T, MHc=492kA/m, (BH)=222.2kJ/m3 for the alloy of y=0.4; (BH)=174.6kJ/m3 for the alloy of y=0.5. The curie temperature of the alloys is about 609~590K. The reversible temperature coefficient of residual induction is about-0.094~-0.119%/K, The microstructure, density, hardness, specific resistivity of the alloys have been observed and measured respectively.

     

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      沈陽化工大學材料科學與工程學院 沈陽 110142

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