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Dy0.5Fe60Pt39.5合金的相轉(zhuǎn)變和磁性能
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Phase Transformation and Magnetic Properties of Dy0.5Fe60Pt39.5 Alloy
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Supported by the National Natural Science Foundation of China (50261002&50661002)

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    摘要:

    研究了退火時(shí)間對(duì)Dy0.5Fe60Pt39.5合金結(jié)構(gòu)和磁性能的影響。通過熱磁曲線的測(cè)量獲得了軟磁相和硬磁相的居里溫度。實(shí)驗(yàn)表明：由于退火時(shí)間的增長，合金中的短程有序度增加，使無序的面心立方相并不是真正的無序相。合金的矯頑力和剩磁比都是退火時(shí)間的函數(shù)，最佳的熱處理?xiàng)l件是在600 °C退火5 h。根據(jù)合金相轉(zhuǎn)變和微結(jié)構(gòu)的變化對(duì)磁性能的結(jié)果進(jìn)行了解釋。

    Abstract:

    The effects of the annealing time on the microstructure and magnetic properties of Dy0.5Fe60Pt39. 5 were investigated. X-ray diffraction and M-T data indicated that the disordered face-centered-cubic phase (soft phase) is not truly disordered phase due to an increase in the degree of short-range order with increasing of annealing time. Both the coercivity and remanence ratio of the FePt based alloy are as a function of the annealing time. The optimum heat treatment condition for the alloy is at annealing temperature of 600 °C for 5 h. These results of magnetic properties can be explained on the basis of phase transformation and microstructure of the alloy.

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成 鋼,顧正飛,周懷營. Dy0.5Fe60Pt39.5合金的相轉(zhuǎn)變和磁性能[J].稀有金屬材料與工程,2009,38(8):1325~1327.[Cheng Gang, Gu Zhengfei, Zhou Huaiying. Phase Transformation and Magnetic Properties of Dy0.5Fe60Pt39.5 Alloy[J]. Rare Metal Materials and Engineering,2009,38(8):1325~1327.]
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  • 收稿日期:2008-07-27
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