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Materials 2014, 7(6), 4773-4788; doi:10.3390/ma7064773

Sintering Behaviour of Waste Olivine and Olivine/Alumina Blends

* ,
Department of Chemistry, Physics and Environment, University of Udine (UNIUD), Via del Cotonificio 108, I-33100 Udine, Italy
* Author to whom correspondence should be addressed.
Received: 23 April 2014 / Revised: 9 June 2014 / Accepted: 10 June 2014 / Published: 20 June 2014
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The sintering behaviour of several green compacts made with olivine or olivine/alumina powder blends has been examined. To this goal, powders were attrition milled, uniaxially pressed into specimens and air sintered at temperatures ranging from 1100 to 1300 °C. The resulting samples were characterized by water absorption, shrinkage, phase composition and density. Compositions containing 5%, 10% and 20% Al2O3 have a sintering behaviour similar to that of olivine alone, reaching low residual porosity when fired at 1300 °C. Conversely, the composition containing 40% Al2O3 displays an almost flat shrinkage profile and maintains high residual porosity in the examined temperature range.
Keywords: olivine; alumina; sintering; crystal phases; microstructure olivine; alumina; sintering; crystal phases; microstructure
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Furlani, E.; Aneggi, E.; Maschio, S. Sintering Behaviour of Waste Olivine and Olivine/Alumina Blends. Materials 2014, 7, 4773-4788.

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