Furlani Erika, Aneggi Eleonora, Maschio Stefano
Department of Chemistry, Physics and Environment, University of Udine (UNIUD), Via del Cotonificio 108, I-33100 Udine, Italy.
Materials (Basel). 2014 Jun 20;7(6):4773-4788. doi: 10.3390/ma7064773.
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.
研究了用橄榄石或橄榄石/氧化铝粉末混合物制成的几种生坏的烧结行为。为此，将粉末进行研磨，单轴压制为试样，并在1100至1300°C的温度下进行空气烧结。通过吸水率、收缩率、相组成和密度对所得样品进行表征。含有5%、10%和20% Al₂O₃的组合物具有与单独橄榄石相似的烧结行为，在1300°C下烧制时残留孔隙率较低。相反，含有40% Al₂O₃的组合物显示出几乎平坦的收缩曲线，并且在研究的温度范围内保持较高的残留孔隙率。
