The production of β-SiAlON ceramics with low amounts of additive,at low sintering temperature |
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| Authors: | Onur Eser Semra Kurama Goktug Gunkaya |
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| Affiliation: | 1. Graduate Department of Advanced Technologies, Anadolu University, Eskisehir 26450, Turkey;2. Anadolu University, Department of Materials Science and Engineering, Eskisehir 26555, Turkey;1. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China;2. State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;3. Tianjin Key Laboratory of Thin Film and Opitcs, Tianjin Jinhang Institute of Technical Physics, Tianjin 300192, China;1. Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia;2. Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia;3. College of Aeronautical Engineering, National University of Science & Technology (NUST), Pakistan;4. Centre for Engineering Research, King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia;5. Department of Metallurgical and Materials Engineering University of Engineering and Technology, Lahore, Pakistan;6. Faculty of Materials Science and Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Swabi, KPK, Pakistan;1. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China;2. Tianjin Key Laboratory of Thin Film and Opitcs, Tianjin Jinhang Institute of Technical Physics, Tianjin 300192, China;3. State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;1. Department of Mechanical Engineering, College of Electrical and Mechanical Engineering (CE&ME), National University of Sciences and Technology (NUST), Pakistan;2. Department of Mechanical and Nuclear Engineering, University of Sharjah, Sharjah, United Arab Emirates;3. Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia;4. Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia |
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| Abstract: | In the present work nano-sized powder of β-SiAlON was produced using a wet milling process. Different milling times and mediums (methyl ethyl keton, ethanol and toluene as solvents, polyethyleneglicol, oleic acid, sodium tripolyphosphate and polyvinylpyrrolidon as dispersants) were performed for the determination of the most efficient milling system. The powders were produced using a conventional process (the ball to powder ratio was 1:1.5, at 300 rpm, for 1.5 h) having a few hundred nanometer particle size, and these were used as standard powders in this study. The nano-sized β-SiAlON starting powders (<100 nm) were sintered at lower temperatures than that of the conventional powders. The amount of Y2O3 in powders (～130 nm), produced by high energy milling process, was fewer than conventional powders (5 wt.%). The results of the powder size, sintering behavior and mechanical properties of this sample were compared to those of the standard powder and its sintered sample. This sample, produced using the nano-powder, was investigated, and densified at 150 °C lower than that of the standard sample. Even though the amount of Y2O3 was decreased, the hardness of the samples was better than that of the standard sample. |
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