Sintering Behaviour of Waste Olivine and Olivine/Alumina Blends

Materials

Erika Furlani¹  Eleonora Aneggi² 

[1] Department of Chemistry, Physics and Environment, University of Udine (UNIUD), Via del Cotonificio 108, I-33100 Udine, Italy;

关键词: olivine;    alumina;    sintering;    crystal phases;    microstructure;   

DOI  :  10.3390/ma7064773

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.