Nanometer-sized powder production by means of target evaporation using a high-efficiency pulsed-repetitive CO2 laser

Vladimir V. Osipov; Yu. A. Kotov; M. G. Ivanov; O. M. Samatov; P. B. Smirnov

doi:10.1117/12.337515

20 January 1999 Nanometer-sized powder production by means of target evaporation using a high-efficiency pulsed-repetitive CO₂ laser

Vladimir V. Osipov, Yu. A. Kotov, M. G. Ivanov, O. M. Samatov, P. B. Smirnov

Author Affiliations +

Proceedings Volume 3688, 6th International Conference on Industrial Lasers and Laser Applications '98; (1999) https://doi.org/10.1117/12.337515
Event: 6th International Conference on Industrial Lasers and Laser Applications '98, 1998, Shatura, Moscow Region, Russian Federation

Abstract

Our paper reports about YSZ powders 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 percent and specific power output at approximately 1 W/cm³. Pulsed regime is proved to be more efficient for active medium excitation and target evaporation than continuous one. Targets made from coarse YSZ powder with Y₂O₃ content of 10.15 mol. percent 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 equals 10 nm and (sigma) equals 1.75. Specific surface of the powder was up to 70 m²/g, while the Y₂O₃ content reduced to 9.8 mol. percent.

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Vladimir V. Osipov, Yu. A. Kotov, M. G. Ivanov, O. M. Samatov, and P. B. Smirnov "Nanometer-sized powder production by means of target evaporation using a high-efficiency pulsed-repetitive CO₂ laser", Proc. SPIE 3688, 6th International Conference on Industrial Lasers and Laser Applications '98, (20 January 1999); https://doi.org/10.1117/12.337515

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