Development of Avrami's kinetics to describe growth of Bi-2223 crystals

Wu Ming Chen, Xu Chuan Jiang, Mustafa Yavuz, Shiro Kambe

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

The Avrami's kinetics was known to be the best theory to describe Bi-2223 crystals growth. Whereas, it cannot explain the fact that maximum product volume appearing at optimum sintering time during synthesis Bi-2223 crystal. Meanwhile, the Avrami's equation can also be used to determine the activation energy of Bi-2223 crystal growth; unfortunately, the determined activation energy, E, had dispersion as much as hard to be accepted by researchers themselves. To solve those problems, we studied and developed Avrami's kinetics and obtained a developed Avrami's kinetics equation in this research. With the developed Avrami equation, the index of growth, n, and E of Bi-2223 crystals were determined, including the periods of Bi-2223 crystals growing and decomposing. The n and E for Bi-2223 crystals were changing during synthesis period, values of which can be positive, zero or negative for different reaction periods. And the negative E and n were no reports to be found before, which caused by the decomposition of the product. The developed kinetics can describe a phase transformation system that with metastable or stable product. The developed kinetics theory, as a universal theoretical tool, is expected to be widely applied in the science and engineering multidisciplines and their related interdisciplines.

Original languageEnglish
Title of host publication2011 International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2011
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages138-140
Number of pages3
ISBN (Print)9781424478521
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventIEEE International Conference on Applied Superconductivity and Electromagnetic Devices 2011 - Sydney Center, Sydney, Australia
Duration: 14 Dec 201116 Dec 2011
https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=17490

Conference

ConferenceIEEE International Conference on Applied Superconductivity and Electromagnetic Devices 2011
Abbreviated titleASEMD 2011
CountryAustralia
CitySydney
Period14/12/1116/12/11
Internet address

Keywords

  • activation energy
  • avrami kinetics
  • Bi-2223 crystal
  • metastable state
  • phase transformation

Cite this

Chen, W. M., Jiang, X. C., Yavuz, M., & Kambe, S. (2011). Development of Avrami's kinetics to describe growth of Bi-2223 crystals. In 2011 International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2011 (pp. 138-140). [6145087] IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ASEMD.2011.6145087