Kinetics of the β → α transformation of tin: role of α-tin nucleation

Zeng, Guang, McDonald, Stuart D., Gu, Qinfen, Matsumura, Syo and Nogita, Kazuhiro (2015) Kinetics of the β → α transformation of tin: role of α-tin nucleation. Crystal Growth and Design, 15 12: 5767-5773. doi:10.1021/acs.cgd.5b01069


Author Zeng, Guang
McDonald, Stuart D.
Gu, Qinfen
Matsumura, Syo
Nogita, Kazuhiro
Title Kinetics of the β → α transformation of tin: role of α-tin nucleation
Journal name Crystal Growth and Design   Check publisher's open access policy
ISSN 1528-7505
1528-7483
Publication date 2015-10-22
Sub-type Article (original research)
DOI 10.1021/acs.cgd.5b01069
Open Access Status Not Open Access
Volume 15
Issue 12
Start page 5767
End page 5773
Total pages 7
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
The influence of α-Sn nucleation on the kinetics of the β → α phase transformation are investigated, using in situ synchrotron powder X-ray diffraction (PXRD) with variable temperature control. In the entire thermal history of the α → β → α transformations, the population of α-Sn at the onset of the β → α transformation was varied by controlling the α → β transformation under isothermal conditions. The degree of α-Sn nucleation is found to have a correlation with the transformation kinetics of β → α. The growth component n is determined by both temperature and transformation time (fraction). By introducing an impingement factor, the transformation curves yielded a good fit to the modified Johnson–Mehl–Avrami–Kolmogorov (JMAK) model. At the commencement of the reaction, insufficient nucleation was found in samples subject to long anneals, and additional nucleation was required, at the kinetically optimal temperature of −45 °C.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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