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The structural transformation of anatase TiO2 by high-energy vibrational ball milling

Published online by Cambridge University Press:  31 January 2011

Suchitra Sen ,
M. L. Ram ,
S. Roy  and
B. K. Sarkar
Suchitra Sen*
Affiliation:
Central Glass & Ceramic Research Institute, Calcutta 700032, India
M. L. Ram
Affiliation:
Central Glass & Ceramic Research Institute, Calcutta 700032, India
S. Roy
Affiliation:
Central Glass & Ceramic Research Institute, Calcutta 700032, India
B. K. Sarkar
Affiliation:
Central Glass & Ceramic Research Institute, Calcutta 700032, India
*
a)Address all correspondence to this author.
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Abstract

The structural transformation of anatase TiO2 by high-energy vibrational ball milling was studied in detail by different analytical methods of x-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). This structural transformation involves both phase transition and nanoparticle formation, and no amorphization was observed. The crystallite size was found to decrease with milling time down to nanometer size ∼13 nm and approaching saturation, accompanied by phase transformation to metastable phases, i.e., TiO2(II), which is a high-pressure phase and TiO2(B), which was identified in ball-milled powder reported for the first time in this paper. These phases eventually started transforming to rutile by further milling.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 3 , March 1999 , pp. 841 - 848
Copyright
Copyright © Materials Research Society 1999

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