Preparation of High-Strength and Translucent Alumina by Hot Isostatic Pressing |
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| Authors: | Hiroyuki Mizuta Kiichi Oda Yasuo Shibasaki Masaki Maeda Michihide Machida Kazuyuki Ohshima |
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| Affiliation: | Government Industrial Research Institute-Nagoya, Nagoya 462, Japan |
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| Abstract: | A vacuum-pressure slip-casting technique and hot isostatic pressing (HIPing) were used to prepare high-strength and translucent alumina ceramics. A low-viscosity and high-solids-content slurry (46 vol% solids) was prepared, and a dense green compact was formed. The samples were sintered and subjected to capsule-free HIPing. Extremely high-density (99.9%) and fine-grained (0.7 to 15 μm in diameter) alumina ceramics were obtained. The HIPed samples showed high bend strength and translucency with in-line transmittance of 30% to 46% (1 mm thick). |
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| Keywords: | alumina strength transparency density hot isostatic pressing |
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