Crystalline Microstructure of Corundum Fillers Determined from Powder X-Ray Diffraction Patterns

• Authors: M. Kojdecki , J. Bastida , F. De la Torre , P. Pardo , R. Ibáńez , M. Urquiola
• Languages of publication: EN

Abstracts

EN

X-ray-diffraction microstructural analysis was performed for corundum powders produced from Bayer aluminium hydroxides in different ways and for high purity corundum powders produced from other raw materials. Crystalline microstructure characterised by prevalent crystallite shape, volume-weighted crystallite size distribution and second-order crystalline lattice strain distribution was determined through modelling crystallite shapes as hexagonal prisms, with the resulting mean volume-weighted standardised crystallite size in the range 406-1941 Å, height-to-base-diagonal ratio in the range 0.68-0.94 and the mean-absolute second-order strain in the range 0.028-0.087%. Crystallite size distributions were found to be well approximated as bimodal logarithmic-normal ones and consequently four types of microstructure were recognized as depending on precursors and methods of production.

Keywords

EN

81.05.Je; 61.72.Dd

Discipline

• 81.05.Je: Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)(for ceramics in electrochemistry, see 82.45.Yz)
• 61.72.Dd: Experimental determination of defects by diffraction and scattering

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 4
• Pages: 1000-1003

Dates

published

2016-10

Contributors

author

M. Kojdecki

• Institute of Mathematics and Cryptology, Military University of Technology, 00-908 Warsaw, Poland

author

J. Bastida

• Department of Geology, University of Valencia, 46100 Burjasot, Valencia, Spain

author

F. De la Torre

• Department of Chemical Engineering, University of Valencia, 46100 Burjasot, Spain

author

P. Pardo

• Department of Inorganic Chemistry, University of Valencia, 46100 Burjasot, Spain

author

R. Ibáńez

• Institute of Materials Science, University of Valencia, 46980 Paterna, Valencia, Spain

author

M. Urquiola

• Ceinmat S.L, Scientific Park of the University of Valencia, 46980 Paterna, Spain

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Identifiers

DOI

10.12693/APhysPolA.130.1000