Effects of Precipitants on the Properties of Nd3+∶Lu2O3 Nano-powders

doi:10.3724/SP.J.1077.2009.00764

Abstract

Abstract: Neodymium doped lutetia nanocrystalline powders were synthesized by a wet chemical processing using three different precipitants, i.e. ammonium hydroxide (NH₄OH), ammonium hydrogen carbonate (NH₄HCO₃) and the mixed solution of NH₄OH+NH₄HCO₃, respectively. Compared with the other two precipitants, the Nd-doped Lu₂O₃ powder synthesized by mixed solution of NH₄OH+NH₄HCO₃ had the advantages of higher specific surface area, smaller particle size (30nm) and narrower particle size distribution (from 60nm to 160nm). Green compacts were formed from as-synthesized Nd³⁺∶Lu₂O₃ powders by dry-pressing followed by a cold isostatic pressing. The green compact made from powders synthesized by mixed precipitants acheived the highest linear thermal shrinkage of about 17% at 1400℃, demonstrating more superior sinterbility than the other two powders. Highly transparent samples were obtained after being sintered in flowing H₂ atmosphere at 1880℃ for 8h. The linear optical transmittance of the polished transparent samples reached 75.5% at the wavelength of 1080nm.

Key words: Nd³⁺∶Lu₂O₃, co-precipitation processing, powder characteristics, transparent ceramic

CLC Number:

TB383

ZHOU Ding,SHI Ying,YUN Ping,XIE Jian-Jun. Effects of Precipitants on the Properties of Nd³⁺∶Lu₂O₃ Nano-powders[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.00764.

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Effects of Precipitants on the Properties of Nd³⁺∶Lu₂O₃ Nano-powders

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