Si3N4/SiC nanocomposite powder from a preceramic polymeric network based on poly(methylsilane) as the SiC precursor



Document title: Si3N4/SiC nanocomposite powder from a preceramic polymeric network based on poly(methylsilane) as the SiC precursor
Journal: Materials research
Database: PERIÓDICA
System number: 000312485
ISSN: 1516-1439
Authors: 1

Institutions: 1Universidade Estadual de Campinas, Instituto de Quimica, Campinas, Sao Paulo. Brasil
Year:
Season: Ene
Volumen: 4
Number: 1
Pages: 13-17
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English 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. b-SiC whiskers were grown at 1400 °C in the pores of the matrix. At 1600 °C, the a ® b Si3N4 phase transition took place, but no elemental silicon from Si3N4 decomposition was detected, evidencing the protective effect of the SiC phase
Disciplines: Ingeniería,
Química
Keyword: Ingeniería de materiales,
Química de polímeros,
Materiales cerámicos,
Polvos cerámicos,
Materiales compuestos,
Nitruro de silicio,
Carburo de silicio
Keyword: Engineering,
Chemistry,
Materials engineering,
Polymer chemistry,
Ceramic materials,
Ceramic powders,
Composite materials,
Silicon nitride,
Silicon carbide
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