Kirkendall Effect and Mechanism of Self-Diffusion in B2 Intermetallic Compounds

Autor:	G. P. Tiwari, R. S. Mehrotra
Rok vydání:	2012
Předmět:	Self-diffusion Nial Materials science Kirkendall effect Metallurgy Metals and Alloys Intermetallic FEAL Condensed Matter Physics Mechanics of Materials Vacancy defect Diffusion (business) computer Mechanism (sociology) computer.programming_language
Zdroj:	Metallurgical and Materials Transactions A. 43:3654-3662
ISSN:	1543-1940 1073-5623
Popis:	Single-phase interdiffusion studies in the B2 intermetallic compounds NiAl and FeAl have demonstrated the incidence of Kirkendall effect in these systems. The implication of this observation on the operating mode of self-diffusion in these systems is discussed. The direct exchange and ring diffusion mechanisms were excluded as the possible mode of substitutional diffusion in metals and alloys on account of the incidence of Kirkendall effect during single-phase interdiffusion studies. It is suggested that on similar phenomenological considerations, the six-jump vacancy cycle mechanism, triple-defect mechanism, and antistructure bridge mechanism are precluded as possible mode of diffusion in B2 intermetallic compounds.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1ad700895dba3ce65f27ad36a6fa2137 https://doi.org/10.1007/s11661-012-1199-0 Zobrazit plný text záznamu Full text from SpringerLink