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Pr0.3TbxDy0.7-xFe1.9Ti0.1合金結構和磁致伸縮
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河北省自然科學基金(E2006000063)


Study on Structure and Magnetostriction of Pr0.3TbxDy0.7-xFe1.9Ti0.1 Alloy
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    摘要:

    采用電弧熔煉方法制備了Pr0.3TbxDy0.7-xFe1.9Ti0.1(x=0.18~0.21)合金，對樣品進行不同條件退火處理，并測量了其磁性能。結果表明：退火前樣品都有雜相，并且第二相很大程度上影響樣品磁致伸縮；700 ℃，6 d退火處理沒有有效消除雜相，樣品磁致伸縮沒有明顯得到改善；而900 ℃，3 d退火處理有效地消除了樣品的雜相，尤其是x=0.21的樣品，幾乎呈現(xiàn)完美的單一的MgCu2型Laves相，磁化強度和磁致伸縮系數(shù)均有所增加，當磁場為900 kA/m時該樣品磁致伸縮系數(shù)達到了1.12×10-3

    Abstract:

    Pr0.3TbxDy0.7-xFe1.9Ti0.1(x=0.18-0.21) alloys were prepared by arc melting and then the samples were annealed under different conditions. Their magnetostriction was studied. The results indicate that the second phase exists in all samples before annealing and greatly influences the magnetostriction of samples. The second phase cannot be eliminated and the magnetostriction can not be improved by 700 oC, 6 d annealing. However, the second phase can be efficiently eliminated by 900 oC, 3 d annealing. In particular, for the sample of Pr0.3Tb0.21Dy0.49Fe1.9Ti0.1, the pure cubic Laves phase with MgCu2-type structure was obtained and its magnetization and magnetostriction coefficient increased. It has a high magnetostriction coefficient of about 1.12×10-3 at 900 kA/m

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劉曉兵,劉何燕,孟凡斌,盧遵銘,徐學文,李養(yǎng)賢. Pr0.3TbxDy0.7-xFe1.9Ti0.1合金結構和磁致伸縮[J].稀有金屬材料與工程,2010,39(4):735~738.[Liu Xiaobing, Liu Heyan, Meng Fanbin, Lu Zunming, Xu Xuewen, Li Yangxian. Study on Structure and Magnetostriction of Pr0.3TbxDy0.7-xFe1.9Ti0.1 Alloy[J]. Rare Metal Materials and Engineering,2010,39(4):735~738.]
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  • 收稿日期:2009-04-24
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