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Citation: XU Ming-Xia, CHEN Chun-Lin, LIANG Hui, XU Ting-Xian, ZHENG Fu-Qian, LIU Jian-Liang. Microstructure and Infrared Emissivity of Al₂O₃-SiO₂ Nano-particles[J]. Chinese Journal of Applied Chemistry, ;2000, 17(2): 159-162. shu

Microstructure and Infrared Emissivity of Al₂O₃-SiO₂ Nano-particles

1.
a School of Materials and Engineering, Tianjin University, Tianjin 300072;
2.
b Institute of Precious Metals, Kunming

Received Date: 23 September 1999
Available Online: 21 February 2000

Nano-powders with different mole ratio of Al₂O₃ to SiO₂ have been prepared by hydrolysis-precipitation and coating-precipitation methods. The chemical composition, crystalline state, morphology and infrared emmision property of the powders have been investigated by ICP, XRD and TEM. The results show that V-Al₂O₃ or Al-Si spinel with antispinel structure and vacancy have higher infrared emmisivity in wavelength range of 8~15 μm at room temperatrue. The thin piece particles with low symmetry structure show higher infrared property than the spherical particles and decease of particle size is in favor of improving the infrared property.
- alumina-silica,
- nano particle,
- infrared emmission
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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

Microstructure and Infrared Emissivity of Al₂O₃-SiO₂ Nano-particles