Title of article :
High energy ball milling of titania and titania–ceria powder mixtures
Author/Authors :
Furlani، نويسنده , , Erika and Aneggi، نويسنده , , Eleonora and de Leitenburg، نويسنده , , Carla and Maschio، نويسنده , , Stefano، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
6
From page :
591
To page :
596
Abstract :
Titania alone and several titania–ceria blends of powders were milled by high energy ball milling for different periods of time. Phases, crystal size, particle size and morphology were evaluated. The research has demonstrated that milling reduces the mean crystallite size to less than 30 nm for any time whereas powder particles coalesce into coarse agglomerates. At the same time anatase titania transforms to rutile after 3 hour milling, but a thermal treatment at 700 °C for 1 h partially recovers the original crystal structure. The behaviour of ceria–titania blends is similar to that of titania alone, but the reversibility of the anatase–rutile transformation does not occur when the quantity of ceria is greater than a critical level which we have set between the composition with Ce/Ce + Ti ratios of 5 and 10 wt.%.
Keywords :
Particle size , Nanocrystalline powders , High Energy Ball Milling , Titania–ceria powders
Journal title :
Powder Technology
Serial Year :
2014
Journal title :
Powder Technology
Record number :
1705224
Link To Document :
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