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Electron microscopy of microstructural transformation in electrodeposited Ni-rich, Ag-Ni film

Srivastava, Chandan and Mundotiya, Brij Mohan (2013) Electron microscopy of microstructural transformation in electrodeposited Ni-rich, Ag-Ni film. In: THIN SOLID FILMS, 539 . pp. 102-107.

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Official URL: http://dx.doi.org/ 10.1016/j.tsf.2013.05.080

Abstract

Ag-Ni films were electrodeposited over a Cu substrate. Structural characterization revealed a fibrous microstructure with an amorphous structure for the as-deposited film. Isothermal annealing at 400 degrees C of the film inside transmission electron microscope led to amorphous-to-crystalline transition along with the evolution of nano-sized particles in the microstructure. The crystalline phase was Ni-Ag solid solution. The relative volume fraction of the nano-sized particles increased gradually with time. There was however no detectable decomposition of solid solution phase till about 4 h of annealing. Beyond 4 h phase separation initiated and pure Ag and Ni phases formed in the film. This study provides a methodology by which microstructural engineering of as-electrodeposited amorphous Ag-Ni films can be conducted to isolate a particular microstructure in order to tap specific potentially usable functionalities. (C) 2013 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ELSEVIER
Keywords: Phase stability; Miscibility gap; Nanoparticle; Thin film; Electrodeposition; Transmission electron microscopy
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 03 Sep 2013 11:39
Last Modified: 03 Sep 2013 11:39
URI: http://eprints.iisc.ac.in/id/eprint/47036

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