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X-ray computed micro tomography as complementary method for the characterization of activated porous ceramic preforms

Vasić, S. ; Grobéty, B. ; Kuebler, J. ; Graule, T. ; Baumgartner, L.

In: Journal of Materials Research, 2007, vol. 22, no. 5, p. 1414-1424

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    Title
    • X-ray computed micro tomography as complementary method for the characterization of activated porous ceramic preforms
    Author
    • Vasić, S.. Technical Mineralogy Group, Institute of Mineralogy and Petrography, University of Fribourg, CH-1700 Fribourg, Switzerland; and EMPA, Swiss Federal Laboratories for Materials Testing and Research, Laboratory for High Performance Ceramics, CH-8600 Duebendorf, Switzerland
    • Grobéty, B.. Technical Mineralogy Group, Institute of Mineralogy and Petrography, University of Fribourg, CH-1700 Fribourg, Switzerland
    • Kuebler, J.. EMPA, Swiss Federal Laboratories for Materials Testing and Research, Laboratory for High Performance Ceramics, CH-8600 Duebendorf, Switzerland
    • Graule, T.. EMPA, Swiss Federal Laboratories for Materials Testing and Research, Laboratory for High Performance Ceramics, CH-8600 Duebendorf, Switzerland
    • Baumgartner, L.. Institute of Mineralogy and Petrography, Earth Science, University of Lausanne, CH-1100 Lausanne, Switzerland
    Document Type
    • Postprint
    Language
    • English
    Published in
    • Journal of Materials Research, 2007, vol. 22, no. 5, p. 1414-1424. Cambridge University Press
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:295871
    Summary
    X-ray computed micro tomography (CT) is an alternative technique to the classical methods such as mercury intrusion (MIP) and gas pycnometry (HP) to obtain the porosity, pore-size distribution, and density of porous materials. Besides the advantage of being a nondestructive method, it gives not only bulk properties, but also spatially resolved information. In the present work, uniaxially pressed porous alumina performs activated by titanium were analyzed with both the classical techniques and CT. The benefits and disadvantages of the applied measurement techniques were pointed out and discussed. With the generated data, development was proposed for an infiltration model under ideal conditions for the production of metal matrix composites (MMC) by pressureless melt infiltration of porous ceramic preforms. Therefore, the reliability of the results, received from different investigation techniques, was proved statistically and stereologically