Combustion synthesis of rod-like AlN nanoparticles
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概要
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Rod-like aluminum nitride (AlN) nanoparticles were prepared by the nitriding combustion synthesis method. A charge composed of Al and AlN diluent powders (40/60mol%) with 5mass% MgO as additive was combusted under 1MPa nitrogen atmosphere. The combustion temperature of the reaction was 2030℃ and the speed was 1.58mm/s. The FE-SEM observation showed that the rod-like AlN nanoparticles have diameters in the range of 90-300 nm and maximum length about 2μm. It also showed evidences of the core-shell model of nitridation where the nanorods grew near the flow-out of eggshell-type AlN hollows. The EDX analyses showed the formation of Mg-Al-O-N droplets on the tips of AlN nanorods which strongly suggested that the vapor-liquid-solid (VLS) mechanism was the predominant growth mode. However, when the liquid droplets necessary for VLS were exhausted with continuous covering on the surface of the growing nanorods, the growth mode changed probably to vapor-solid (VS) mechanism. Furthermore, a growth model of the formation of rod-like AlN nanoparticles was proposed and discussed in accordance with experimental results.
- 社団法人日本セラミックス協会の論文
- 2008-09-01
著者
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Miyamoto Yoshinari
Department Of Nano Micro Structure Control Smart Processing Research Center Joining And Welding Rese
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Miyamoto Yoshinari
Department Of Adaptive Machine Systems Graduate School Of Engineering Osaka University
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SHI Zhongqi
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University
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RADWAN Mohamed
Department of Nano Micro Structure Control, Smart Processing Research Center, Joining and Welding Re
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KIRIHARA Soshu
Department of Nano Micro Structure Control, Smart Processing Research Center, Joining and Welding Re
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JIN Zhihao
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University
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Jin Z
State Key Laboratory For Mechanical Behavior Of Materials Xi'an Jiaotong University
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Jin Zhihao
State Key Laboratory For Mechanical Behaviro Of Materials Xi'an Jiaotong University
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Shi Zhongqi
State Key Laboratory For Mechanical Behavior Of Materials Xi'an Jiaotong University:department
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Radwan Mohamed
Department Of Nano Micro Structure Control Smart Processing Research Center Joining And Welding Rese
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Kirihara Soshu
Department Of Nano Micro Structure Control Smart Processing Research Center Joining And Welding Rese
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Kirihara Soshu
Smart Processing Research Center Joining And Welding Research Institute Osaka University
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Kirihara Soshu
Department Of Materials Science Faculty Of Engineering Ibaraki University
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Jin Zhihao
State Key Laboratory For Mechanical Behavior Of Materials Xi'an Jiaotong University
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Miyamoto Y
Department Of Nano Micro Structure Control Smart Processing Research Center Joining And Welding Rese
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