Phase transformations in highly disperse powders during their rapid heating and cooling |
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| Authors: | DV Fedoseev IG Varshavskaya AV Lavrent&#x;ev BV Deryaguin |
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| Affiliation: | Institute for Physical Chemistry of the U.S.S.R., Academy of Sciences, Moscow, U.S.S.R. |
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| Abstract: | Phase transformations in particles of ultrafine powders of graphite, hexagonal boron nitride, and quartz during rapid heating and cooling by passage through a laser beam were investigated. A continuous infrared laser with a wavelength of 10.6 μm was used as a heat source through which the powders were recycled several times. Methods of concentrating the product phases are described. Particles of diamond, carbides, cubic boron nitride, koesite and stishovite were obtained in the mixed products. |
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