利用高效脉冲重复CO/sub - 2激光靶蒸发法制备纳米YSZ粉末

12th International Conference on High-Power Particle Beams. BEAMS'98. Proceedings (Cat. No.98EX103) Pub Date : 1998-06-07 DOI:10.1109/BEAMS.1998.817028

V. Osipov, Y. Kotov, M. Ivanov, O. Samatov, S. Sokovnin, P. B. Smirnov

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引用次数: 0

摘要

本文报道了在气流中逐次蒸发结晶法制备YSZ粉末。在激光应用中，采用了原始的主动介质激发方法。基于该方法构建的激光器效率达到22%，比功率输出为/spl sim/1 W/cm/sup / 3/。实验证明，脉冲模式比连续模式更有效地实现了介质的主动激励和目标蒸发。由Y/sub 2/O/sub 3/含量为10.15 mol.%的YSZ粗粉制成靶材，在净化空气流中蒸发结晶。得到了形状接近球形的立方结构YSZ粒子。粒径分布接近对数正态分布，dg=10 nm， /spl sigma/=1.75。粉末比表面积可达70 m/sup 2//g, Y/ sup 2/O/ sup 3/含量降至9.8 mol.%。

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Nanometer-sized YSZ powders production by means of target evaporation using high-efficient pulsed-repetitive CO/sub 2/-laser

Our paper reports about YSZ powders production by successive evaporation and crystallization in the gas stream. In the laser applied the original method of active medium excitation was used. Efficiency of the laser constructed on the basis of this method reached 22% and specific power output /spl sim/1 W/cm/sup 3/. Pulsed regime is proved to be more efficient for active medium excitation and target evaporation then continuous one. Targets made from coarse YSZ powder with a Y/sub 2/O/sub 3/ content of 10.15 mol.% were evaporated and crystallized in a stream of cleaned air. Cubic-structure YSZ particles were obtained which had a shape close to spherical. Particle size distribution was close to a lognormal distribution with dg=10 nm and /spl sigma/=1.75. Specific surface of the powder was up to 70 m/sup 2//g, while the Y/sub 2/O/sub 3/ content reduced to 9.8 mol.%.

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12th International Conference on High-Power Particle Beams. BEAMS'98. Proceedings (Cat. No.98EX103)

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