最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級(jí)檢索
Y1.7Er0.3Fe17快淬帶的結(jié)構(gòu)和磁熵變
DOI:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

上海市納米中心“納米稀土磁制冷工質(zhì)材料的研究”資助(0352nm030)


Structure and Magnetic Entropy Change of Melt-Spun Y1.7Er0.3Fe17 Ribbons
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    采用熔體快淬法(銅輥速度為20 m/s)制備Y1.7Er0.3Fe17快淬帶,通過X射線衍射儀、振動(dòng)樣品磁強(qiáng)計(jì)(VSM)和三維原子探針(3DAP)對(duì)樣品的晶體結(jié)構(gòu)、磁熵變和原子在三維空間中分布情況進(jìn)行研究。結(jié)果表明,Y1.7Er0.3Fe17快淬帶具有菱方Th2Zn17型結(jié)構(gòu),與標(biāo)準(zhǔn)PDF卡片(48-1454)相比較,Y2Fe17主相晶胞體積略減?。粯悠返木永餃囟仍?08 K附近,磁場(chǎng)變化為1.5 T,樣品的最大磁熵變值為2.10 J·kg-1·K-1;Fe在晶界處含量略有降低,其它區(qū)域內(nèi),Y、Er和Fe 3種原子均勻分布在三維空間中。

    Abstract:

    Melt-spun Y1.7Er0.3Fe17 ribbons were prepared at the wheel speed of 20 m/s. The crystal structure, the magnetic entropy change and three-dimensional atomic mapping of the ribbons were investigated. The results indicate that the melt-spun Y1.7Er0.3Fe17 ribbons crystallize in the hexagonal Th2Zn17 structure, and the lattice parameters of main phase Y2Fe17 in the melt-spun Y1.7Er0.3Fe17 ribbons decrease compared with the standard PDF card (48-1454). The Curie temperature of melt-spun Y1.7Er0.3Fe17 ribbons is about 308 K, which is close to room temperature, and the maximum magnetic entropy change for a field change of 0-1.5 T is 2.10 J·kg-1·K-1. Three elements (Y, Er and Fe) uniformly distributed in the three-dimensional space except in the grain boundary with lower Fe content.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

胡星浩,侯雪玲,張 鵬,汪學(xué)真. Y1.7Er0.3Fe17快淬帶的結(jié)構(gòu)和磁熵變[J].稀有金屬材料與工程,2011,40(2):275~278.[Hu Xinghao, Hou Xueling, Zhang Peng, Wang Xuezhen. Structure and Magnetic Entropy Change of Melt-Spun Y1.7Er0.3Fe17 Ribbons[J]. Rare Metal Materials and Engineering,2011,40(2):275~278.]
DOI:[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2010-03-05
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: