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Physical Properties of Bonded Nanocomposite Type Hard-Soft Magnets

机译：粘结纳米复合型软磁磁体的物理性质

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The exchange spring magnetic powders of SmCo_5/α-Fe were obtained by mechanical milling and annealing. SmCo5+20 wt% α-Fe powder milled for 8 h and annealed at about 550 ℃ was considered to be more appropriate for our purpose. The isotropic nanocomposite permanent magnets were obtained by bonding the magnet powder in a binder matrix. Several ratios from 0.5 to 1.5 wt % between binder and magnetic powder were used. The composite material was compacted in dies at pressure from 600 to 800 MPa. The heat treatments for polymerisation were performed at 180 ℃ for 1h. The density and the microstructure of the magnets are discussed in connection with the properties of the starting powder and processing conditions. Magnetic characteristics of Br,Hc and (BH)_(max) were obtained from hysteresis curves in magnetic fields up to 10 T.
机译：通过机械研磨和退火获得SmCo_5 /α-Fe的交换弹簧磁性粉末。我们认为，将SmCo5 + 20 wt％α-Fe粉末研磨8 h并在约550℃退火的温度比较合适。各向同性的纳米复合永磁体是通过将磁体粉末粘结在粘合剂基质中而获得的。粘合剂和磁性粉末之间使用0.5至1.5重量％的几种比例。将该复合材料在600至800MPa的压力下在模具中压实。聚合热处理在180℃下进行1h。结合初始粉末的性质和加工条件讨论了磁体的密度和微观结构。 Br，Hc和（BH）_（max）的磁特性是从高达10 T的磁场中的磁滞曲线获得的。

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