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GRAIN-BOUNDARY STRUCTURE IN TITANIUM DIBORIDE

SHIM, KB; KWIENCINSKI, J; EDIRISINGHE, MJ; RALPH, B; (1995) GRAIN-BOUNDARY STRUCTURE IN TITANIUM DIBORIDE. In: Muddle, BC, (ed.) INTERFACES II. (pp. 129 - 134). TRANS TECH PUBLICATIONS LTD

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Abstract

Transmission electron microscopy has been used to characterize the microstructure of a titanium diboride sample. Specimen preparation involved conventional ion beam thinning which allowed the main features of the microstructure to be identified. Porosity was found to be largely, but not exclusively, associated with grain boundaries. Some microareas rich in tramp additions (of Fe and W) have been identified.The main substructural feature found was a regular array of low angle(polygon) boundaries with an average misorientation angle of 0.5 degrees. Many of the high angle boundaries studied exhibited periodic arrays of grain boundary dislocations.

Type:Proceedings paper
Title:GRAIN-BOUNDARY STRUCTURE IN TITANIUM DIBORIDE
Event:2nd International Conference on the Role of Interfaces in Advanced Materials Design, Processing and Performance
Location:BALLARAT, AUSTRALIA
Dates:1993-11-01 - 1993-11-05
ISBN:0-87849-693-9
Keywords:TIB2, CERAMIC, PROCESSING, SINTERING, GRAIN GROWTH, TEM, GRAIN BOUNDARY STRUCTURE, SUBSTRUCTURE
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Mechanical Engineering

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