Design and application of differential thermal analysis apparatus in high magnetic fields

Li, Chuanjun; Ren, Zhongming; Ren, Weili; Deng, Kang; Cao, Guanghui; Zhong, Yunbo; Wu, Yuqin
July 2009
Review of Scientific Instruments;Jul2009, Vol. 80 Issue 7, p073907
Academic Journal
The differential thermal analysis (DTA) apparatus has been developed for a commercial superconducting magnet. The DTA apparatus could detect the kinetics and thermodynamics of phase transformation with and without a magnetic field. Preliminary results for Al–Al2Cu eutectics are presented. The DTA curves indicate the similarity at several rates regardless of a magnetic field; however, at the same rate, melting transformation seems not to be influenced by a magnetic field, while solidification could be delayed via suppressing nucleation and crystal growth in a magnetic field. It will be believed that the DTA apparatus can be used to investigate the phase transformation of substances of interest in a magnetic field.


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