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.
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机译：已经研究了几种由橄榄石或橄榄石/氧化铝粉末共混物制成的生坯的烧结行为。为了达到这个目的，将粉末磨碎，单轴压制成试样，并在1100至1300°C的温度下进行空气烧结。所得样品的特征在于吸水率，收缩率，相组成和密度。包含5％，10％和20％Al 2 O 3 的组合物的烧结行为类似于单独的橄榄石，在1300°C烧结时达到较低的残余孔隙率。相反，含有40％Al 2 O 3 的组合物显示出几乎平坦的收缩曲线，并在所检查的温度范围内保持高残留孔隙率。
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