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"Transparent MgAl2O4 ceramic produced by spark plasma sintering"
Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
2009 (English)In: SCRIPTA MATERIALIA, Vol. 61, no 2, 193-196 p.Article in journal (Refereed) Published
Abstract [en]

A two-step pressure profile was used to prepare transparent MgAl2O4 ceramic without sintering aids by spark plasma sintering (SPS) at 1300 degrees C for 3 min. The influence of the pressure profile was investigated systematically and the discoloration in the present study was attributed to the dislocation formed during he fast densification in SPS. At low pre-load pressure, 5 MPa, with the normal characteristic fast heating rate (100 degrees C min(-1)), high inline transmittance of 51% at 550 nm and 85% at 2000 nm can be achieved. Keywords: Sintering; Oxide; Optical transmission; Dislocation; Ultrafine-grained microstructure

Place, publisher, year, edition, pages
2009. Vol. 61, no 2, 193-196 p.
Keyword [en]
Oxide, Optical transmission, Dislocation, Ultrafine-grained microstructure
National Category
Inorganic Chemistry
Research subject
Materials Chemistry
Identifiers
URN: urn:nbn:se:su:diva-36725DOI: 10.1016/j.scriptamat.2009.03.039OAI: oai:DiVA.org:su-36725DiVA: diva2:290014
Available from: 2010-01-25 Created: 2010-01-25 Last updated: 2011-05-03Bibliographically approved

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