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Title of Journal: Bull Mater Sci

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Abbravation: Bulletin of Materials Science

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Springer India

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DOI

10.1007/bf00265173

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0973-7669

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Study of effect of chromium on titanium dioxide ph

Authors: A Bellifa L PiraultRoy C Kappenstein A ChoukchouBraham
Publish Date: 2014/06/12
Volume: 37, Issue: 3, Pages: 669-677
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Abstract

MTiX samples with different atomic chromium percentages were synthesized by sol–gel method and calcined at 400 °C under air The effects of Cr and temperature on titanium dioxide phase transition were studied In situ measurement showed the presence of anatase phase for all samples at temperature 500 °C Without Cr content the anatase–rutile transition takes place at 600 °C and the rutile fraction increases with increase of temperature In the presence of Cr content rutile phase appeared at 700 °C Cr2O3 phase was shown only in the case of CrTi20 content at 800 °C which indicates that the segregation remains modest We have also studied the anatase–rutile transition kinetics by using in situ Xray measurements It was found that the anatase phase stability increases as the chromium content increases Results confirm that the transformation of anatase–rutile is of first order

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