Effect of a carbon additive on the TbCu7-type melt-spun Sm(Co, M)7 (M=Ti, Zr, Hf, V and Ge) ribbons

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• 作者：Chih-Chieh Hsieh (1)
  Shih-Teng Huang (1)
  Jin-Sheng Guo (1)
  Chih-Wei Shih (1)
  Wen-Cheng Chang (1)
  Huang-Wei Chang (2)
  Chun-Chung Shaw (3)
  
• 关键词：Cystal structure ; Melt spinning ; Permanent magnet ; TbCu7
• 刊名：Journal of the Korean Physical Society
• 出版年：2013
• 出版时间：August 2013
• 年：2013
• 卷：63
• 期：3
• 页码：401-404
• 全文大小：214KB
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• 作者单位：Chih-Chieh Hsieh (1)
  Shih-Teng Huang (1)
  Jin-Sheng Guo (1)
  Chih-Wei Shih (1)
  Wen-Cheng Chang (1)
  Huang-Wei Chang (2)
  Chun-Chung Shaw (3)
  
  1. Department of Physics, National Chung Cheng University, Chia-yi, 62102, Taiwan, R.O.C.
  2. Department of Chemistry, Tunghai University, Taichung, 40704, Taiwan, R.O.C.
  3. Super Electronics Co. Ltd, Taipei, 11141, Taiwan, R.O.C.
  
• ISSN：1976-8524

文摘

The effect of a carbon additive on the microstructure and the magnetic properties of melt-spun SmCo7?em class="a-plus-plus">x M x C y (M=Ti, Zr, Hf, V and Ge; x = 0-.3 and y = 0-.1) ribbons was studied. Based on the XRD and the TEM analyses, a pure 1:7 phase could be formed for the C-containing ribbons with M= Ti and Ge. However, carbide phases, i.e., Sm2C3 for M=Zr and Hf, and SmCoC2 for M=V, respectively, were found. Nevertheless, a slight C addition may effectively refine the microstructure and improve both the intrinsic coercvity and the magnetic energy product in all the studied ribbons. Among them, the SmCo6.9V0.1C0.1 ribbons with σ r = 58.7 emu/g, i H c = 13.5 kOe and (BH) max = 9.3 MGOe, and the SmCo6.9Hf0.1C0.1 ribbons with σ r = 61.6 emu/g, i H c = 11.8 kOe and (BH) max = 10.3 MGOe are most suitable for the bonded magnet applications.