Bhaskar, Srilakshmi P and Jagirdar, Balaji R (2017) A journey from bulk brass to nanobrass: A comprehensive study showing structural evolution of various Cu/Zn bimetallic nanophases from the vaporization of brass. In: JOURNAL OF ALLOYS AND COMPOUNDS, 694 . pp. 581-595.
![]() |
PDF
Jou_All_Com_694_581_2017.pdf - Published Version Restricted to Registered users only Download (5MB) | Request a copy |
Abstract
This paper presents the structural and morphological analysis of various Cu/Zn based nanoparticles evolved from bulk brass under different experimental conditions. Vaporization of bulk brass in a solvated metal atom dispersion (SMAD) method results in dealloying of brass into Zn and Cu atoms. Subsequent in situ nucleation and growth of dealloyed components yields Cu/Zn@Cu core-shell nanocomposites. The behavior of these nanocomposites under different heating conditions is studied in detail. Solid state annealing generates brass nanoparticles going through several phases of Cu-Zn phase diagram such as eta-CuZn5, gamma-Cu5Zn8, beta-CuZn (observed as martensite) and alpha-CuZn in sequence. Whereas, a digestive ripening process which involves refluxing of nanocomposites prepared with capping agents imparts spherical morphology and significantly brings down the size and size distribution of the particles. A detailed characterization of refluxed nanocomposites demonstrates certain processes such as diffusion of Zn atoms and segregation of Cu and Zn phases. (C) 2016 Elsevier B.V. All rights reserved.
Item Type: | Journal Article |
---|---|
Publication: | JOURNAL OF ALLOYS AND COMPOUNDS |
Additional Information: | Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND |
Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
Date Deposited: | 31 Jan 2017 05:26 |
Last Modified: | 31 Jan 2017 05:26 |
URI: | http://eprints.iisc.ac.in/id/eprint/56028 |
Actions (login required)
![]() |
View Item |