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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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
Publication:	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
Publisher:	SPRINGER
Additional Information:	Copy right for this article belongs to the SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	08 Jul 2016 05:40
Last Modified:	08 Jul 2016 05:40
URI:	http://eprints.iisc.ac.in/id/eprint/54171

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