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Cryogenics v.89, 2018년, pp.119 - 124   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

High-Temperature (940 °C) furnace in 18/20 T cold bore magnet

Wang, Ze (High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China ) ; Hou, Yubin (High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China ) ; Feng, Qiyuan (High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China ) ; Dong, Hongliang (Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China ) ; Lu, Qingyou (High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China ) ;
  • 초록  

    Abstract We present a high-temperature furnace that can work continuously in an 18/20 T cold bore magnet. A specially designed liquid nitrogen (LN 2 ) jacket is between the high-temperature parts of the furnace and the liquid helium in the magnet Dewar. With LN 2 serving as the cooling medium, the calculated value of radiation received by the liquid helium (LHe) is as low as 0.004 W. The furnace can be put into LHe Dewar directly. Together with the magnet, the furnace can provide experimental conditions of a strong static magnetic field and temperatures up to 940 °C. A cobalt oxide synthesis in solution was carried out at 200 °C with and without a 15 T magnetic field for 8 h. Differences in material structure with the applied field were observed in transmission electron micrographs of the products. A Co film sample was treated at 900 °C with and without a 6.8 T magnetic field for 30 min. The scanning electron micrographs of the treated samples show that magnetic field had a clear effect on the heat treatment process. These two applications confirmed the performance of the furnace both in high magnetic field and at high temperature. Highlights A 940°C furnace which can works in 52 mm cold bore magnet is manufactured. With a LN 2 jacket absorbing the radiation, long-time running is achieved. A compact heating structure permits 30 samples to be treated at the same time. Theoretically, the furnace structure improves space utilization rate.


  • 주제어

    Furnace .   LN2 jacket .   Cold bore magnet .   Cobalt oxide nanoparticle.  

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