Fabrication of Transparent Polycrystalline Yttria Ceramics by Combination of SPS and HIP
来源期刊：Journal of Rare Earths2006年第S1期
论文作者：何明生 李建保 林红 郭钢锋 梁龙
文章页码：222 - 224
摘 要：<正>Transparent polyerystalline yttria is a promising optical ceramics with excellent physical and chemical properties. A commercial yttria powder with a mean particle size of 1.0μm and narrow size distribution was selected as the starting material. Transparent polyerystalline yttria ceramics without any additives were successfully prepared by hot isostatic pressing （HIP） at 1700℃for 2 h under the pressure of 200 MPa in Ar following spark plasma sintering （SPS）. The as-prepared specimens consist of uniform grains of 40μm. Scanning electron microscopy （SEM） images show their pore-free structure. The influences of the yttria powder and sintering process on the properties of the yttria ceramics, including the microstructure and optical properties, were further investigated in our study.
何明生，李建保，林红，郭钢锋，梁龙
摘 要：<正>Transparent polyerystalline yttria is a promising optical ceramics with excellent physical and chemical properties. A commercial yttria powder with a mean particle size of 1.0μm and narrow size distribution was selected as the starting material. Transparent polyerystalline yttria ceramics without any additives were successfully prepared by hot isostatic pressing （HIP） at 1700℃for 2 h under the pressure of 200 MPa in Ar following spark plasma sintering （SPS）. The as-prepared specimens consist of uniform grains of 40μm. Scanning electron microscopy （SEM） images show their pore-free structure. The influences of the yttria powder and sintering process on the properties of the yttria ceramics, including the microstructure and optical properties, were further investigated in our study.
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