Nanocomposite Si/C/N Powder Production by Laser-Aerosol Interaction
Autor: | N. Herlin, Michel Luce, O. Croix, M. Cauchetier |
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Rok vydání: | 1994 |
Předmět: |
Nanocomposite
Argon Materials science Inorganic chemistry Analytical chemistry chemistry.chemical_element Laser law.invention Aerosol Amorphous solid chemistry.chemical_compound Silicon nitride chemistry law visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Crystallization |
Zdroj: | Journal of the American Ceramic Society. 77:993-998 |
ISSN: | 1551-2916 0002-7820 |
Popis: | Ultrafine preceramic Si/C/N powders were obtained via ultrasonic injection of aerosol particles into a high power CO[sub 2] laser beam, using hexamethyldisilazane, which strongly absorbs the CO[sub 2] laser radiation at 10.6 [mu]m, as the precursor. Introduction of aerosol droplets via a flowing argon or argon-NH[sub 3] mixture into the laser beam yielded nanosized (30 to 60 nm), amorphous powders. Yield and particle composition were controlled by varying the synthesis conditions. Powder changes, such as crystallization during heat treatment under nitrogen or argon, were studied. |
Databáze: | OpenAIRE |
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