si3n4/sic nanocomposite powder from a preceramic polymeric network based on poly(methylsilane) as the sic precursor

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ID: 133921
2001
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Abstract
Si3N4/SiC nanocomposite powders were obtained from a preceramic polymeric network based on poly(methylsilane) as the in situ quasi-stoichiometric SiC source. These powders were constituted of nanosized SiC particles homogeneously distributed in the Si3N4 particulate matrix. beta-SiC whiskers were grown at 1400 °C in the pores of the matrix. At 1600 °C, the alpha -> beta Si3N4 phase transition took place, but no elemental silicon from Si3N4 decomposition was detected, evidencing the protective effect of the SiC phase.
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Authors ;Maurício F. Gozzi;Eduardo Radovanovic;I. Valéria P. Yoshida
Journal Majalah Ilmiah Teknologi Elektro
Year 2001
DOI
10.1590/S1516-14392001000100004
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392001000100004
Keywords
silicon nitride mechanics of materials silicon carbidematerials of engineering and construction

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