Effects of process on microstructure and properties of translucent Dy-α-SiAlON sintered at lower temperatures
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概要
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Hot pressing (HP) at higher sintering temperature has been a traditional and prevalent technique for the fabrication of α-SiAlON. In order to prepare translucent SiAlON more easily, LiF was used as a non-oxide sintering additive to lower the sintering temperature to ≤ 1650℃. As a result, all of the samples possessed a good hardness and fracture toughness. At the same time, the lower temperature sintered samples showed a higher optical transmittance in the range of 2.5-5.5 μm wavelength (0.5 mm in thickness). The maximum infrared transmission reached 68% at a wavelength of 3.3 μm. The present work shows that the sintering process has a strong effect on microstructure and property of α-SiAlON. To be exact, a lower sintering temperature and longer holding time can produce some fully-developed microstrcture, which is beneficial for the optical transmittance.
- 2008-07-01
著者
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Liu Qian
State Key Laboratory Of High Performance Ceramics And Superfine Microstructure Shanghai Institute Of
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Liu Qian
State Key Laboratory Of Clean Energy Utilization Zhejiang University
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Liu Qian
State Key Laboratory Of High Performance Ceramics And Superfine Microstructures Shanghai Institute O
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XUE Junming
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute
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FANG Ming
R&D Center for Optical Thin Film Coatings, Shanghai Institute of Optics and Fine Mechanics
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MA Lili
National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese academy o
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XIU Tongping
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute
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GUI Linhua
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute
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Fang Ming
R&d Center For Optical Thin Film Coatings Shanghai Institute Of Optics And Fine Mechanics
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Ma Lili
National Laboratory For Infrared Physics Shanghai Institute Of Technical Physics Chinese Academy Of
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Gui Linhua
State Key Laboratory Of High Performance Ceramics And Superfine Microstructures Shanghai Institute O
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Xue Junming
State Key Laboratory Of High Performance Ceramics And Superfine Microstructures Shanghai Institute O
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Xiu Tongping
State Key Laboratory Of High Performance Ceramics And Superfine Microstructures Shanghai Institute O
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