Using Cold Curcible Induction Melting for Functional Materials and Metal Single Crystal

Cold Crucible Induction Melting technology has significant importance to the development of Function materials and Metal single crystal. Below reviews the main developments in China.

  Since 1988,Bei Li started to produce the rare earth giant magnetostrictive alloy TbDyFe2 by cold crucible induction melting technology on the production scale, gained 2 authorized patents respectively in 2002 and 2005 [1,2]. In 2007, Zeng-Lin Zhou, et al [3] reported that they melted the A2B7 model La - Mg - Ni base hydrogen storage alloy by using the cold crucible induction melting technology. 

  Domestic development of Czochralski metal single crystal growth by using cold crucible induction Melting equipment includes: 
  In 1987,Da-Liang Sun,et al [4] for the first time in the world grew the large size Nd2Fe14B single crystal. 
  In 2000, Qiang Li,et al[5],grew the < 112 > oriented Φ 15 x 200 mm Tb0.27 Dy0.73 Fe2 single crystal. Guang-Heng Wu,et al[6] grew the < 111 > oriented Tb0.27 Dy0.73 Fe2 single crystal.
  About NiMnGa series Heusler alloy, Jing-Lan Chen,et al[7] grew the Ni52Mn24Ga24 single crystal in 2000. Liang Wu,et al[8] grew the [001] oriented Ni46Mn35Ga19 single crystal in 2009, and the increase rate of transformation strain for the magnetic enhancement reached 1.90%. 
  Regarding the β phrase Ni - Al high temperature shape memory alloy, Feng-Bing Song, et al[9] have done lots of researches on single crystal growth and composition control of Ni - Al alloy in 2001,etc.

 Shenzhen Summit Levitation Metallurgical S&T Co.,Ltd is a sole Chinese hi-tech enterprise specializing in researching and developing levitation metallurgical technology with emphasis on cold crucible induction melting technology,it have developed two series of cold crucible induction melting equipment which including Standard type and Special type to meet different users' requirement. 

Reference:

[1] Bei Li, ZL01274217.1, Cold crucible vacuum melting equipment with multifunctional operating system, 2002

[2] Bei Li, ZL02110945.1, Directional solidification method of producing the TbDyFe base alloy, 2005

[3] Zeng-Lin Zhou, Yue-Qing Song, Shun Cui, et al, Effect of replacing the Nb by La on La - Mg - Ni A2B7 type hydrogen storage electrode property [J], Journal of Nonferrous Metals, 2007, 17 (1) : 45-52.

[4] Da-Liang Sun, Min-Hua Jiang, Huan-Chu Chen,et al, New magnetic Nd2Fe14B single crystal Production by utilizing cold crucible technology [J]. Journal of Science, 1987, 14:1071-1073

[5] Yi-Ling Zhang, Qiang Li,et al, Research of crystal growth by utilizing cold crucible, Journal of Material Science and Engineering 2000( z1)

[6] Guang-Heng Wu,et al <111> Oriented and twin-free single crystals of Terfenol-D grown by Czochralski 

method with cold crucible. Progress in Natural Science, 1995, 5(6): 115-119. 

[7] Jing-Lan Chen, et al, Institute of physics, Chinese academy of sciences, Single crystal growth and phase transition properties of Heusler alloy Ni52Mn24Ga24 single [J]. Journal of Artificial Crystal, 2000, S1:25.

[8] Liang Wu,et al, Physical characterization and Shape memory effect of the Martensitic transformation and metamagnetic transition in the single crystal Ni46Mn35Ga19 [J]. Journal of Chongqing Normal University, 2009, 26 (4) : 94-97

[9] Feng-Bing Song, Qiang Li, Yi-Ling Zhang, et al, Research of the production of Martensite NiAl alloy by Czochralski method [J]. Journal of Wuhan University, 2001, 23 (6) : 14-17.

Hannah Zhang(Ms.)

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