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Preparation of Freestanding Zn Nanocrystallites by Combined Milling at Cryogenic and Room Temperatures

Tiwary, Chandra Sekhar and Verma, Akash and Kashyp, Sanjay and Biswas, Krishanu and Chattopadhyay, Kamanio (2013) Preparation of Freestanding Zn Nanocrystallites by Combined Milling at Cryogenic and Room Temperatures. In: METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 44A (4). pp. 1917-1924.

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Official URL: http://dx.doi.org/10.1007/s11661-012-1508-7

Abstract

The present investigation reports the preparation of freestanding nanocrystalline Zn by combined mechanical milling at cryogenic and room temperatures. The cryomilling is used as an effective means of rapid fracturing. The detailed scanning electron microscopy and transmission electron microscopy observations indicate that the minimum crystallite size is 6 +/- A 2 nm after 3 hours of cryomilling. The crystallite size increases to 30 +/- A 2 nm after 3 hours of room temperature milling of the cryomilled powder due to deformation-induced sintering. Detailed theoretical analysis allows us to obtain a diagram of size of the nanoparticles formed vs temperature to explain the experimental findings.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to SPRINGER, NEW YORK.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Francis Jayakanth
Date Deposited: 28 Mar 2013 09:31
Last Modified: 28 Mar 2013 09:31
URI: http://eprints.iisc.ac.in/id/eprint/46238

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