Laser synthesis of nanopowders

V. V. Osipov; M. G. Ivanov; Yu. A. Kotov; V. V. Platonov; O. M. Samatov

doi:10.1117/12.633667

7 June 2005 Laser synthesis of nanopowders

V. V. Osipov, M. G. Ivanov, Yu. A. Kotov, V. V. Platonov, O. M. Samatov

Proceedings Volume 5850, Advanced Laser Technologies 2004; (2005) https://doi.org/10.1117/12.633667
Event: Advanced Laser Technologies 2004, 2004, Rome and Frascati, Italy

Abstract

The design and characteristics of a setup for producing oxide nanopowders are reported. Y₂O₃-stabilized Zr0₂ (YSZ), Al₂O₃+YSZ and CeGdO nanopowders are prepared by target evaporation with a pulse-periodic C0₂-laser. Average laser radiation power is 600 W, pulse power ~10 kW. The output rates of YSZ and Al₂O₃+YSZ nanopowders are 15-20g/h, and CeGdO nanopowder-55-6Og/h. The grain mean size in the powders is l5nm. Data for the powder characteristics, as well as results of X-ray phase and structure analysis, are reported. The results of investigation of unstable behavior of plasma plume produced by the long-pulse laser irradiation of the targets are reported as well. The mushroom-like shape of the glowing area is believed to be determined by the Richtmyer-Meshkov instability of the plasma-air interface and formation of nanoparticles in the plasma expanding into the buffer gas.

Citation Download Citation

V. V. Osipov, M. G. Ivanov, Yu. A. Kotov, V. V. Platonov, and O. M. Samatov "Laser synthesis of nanopowders", Proc. SPIE 5850, Advanced Laser Technologies 2004, (7 June 2005); https://doi.org/10.1117/12.633667

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