The chemical kinetics of mechanical alloying

Forrester J.S. and Schaffer G.B. (1995) The chemical kinetics of mechanical alloying. Metallurgical and Materials Transactions A, 26 3: 725-730. doi:10.1007/BF02663921

Author Forrester J.S.
Schaffer G.B.
Title The chemical kinetics of mechanical alloying
Journal name Metallurgical and Materials Transactions A   Check publisher's open access policy
ISSN 1073-5623
Publication date 1995
Sub-type Article (original research)
DOI 10.1007/BF02663921
Volume 26
Issue 3
Start page 725
End page 730
Total pages 6
Publisher Springer-Verlag
Subject 2506 Metals and Alloys
2500 Materials Science
Abstract The chemical kinetics of a mechanically induced double displacement reaction exhibiting a self-sustaining combustion event have been investigated using differential thermal analysis. In particular, the effect of milling time on the activation energy for the reduction of cupric oxide by iron has been evaluated. It has been shown that the activation energy decreases from 575 kJ/mol at the start of milling to 199 kJ/mol at combustion. This is an indication that the rate-controlling step changes during milling from intrinsic ionic diffusion initially to diffusion down short-circuit pathways prior to combustion. It is suggested that this is dependent on the rate at which strain accumulates in milled powders and is hence a consequence of the mechanical alloying action.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
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Citation counts: Scopus Citation Count Cited 38 times in Scopus Article | Citations
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