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Combined pyrolysis-ammonolysis treatment to retain C during nitridation of SiBOCN ceramics

AuthorsTamayo Hernando, Aitana ; Peña-Alonso, R.; Mazo Fernández, María Alejandra ; RUBIO ALONSO, FAUSTO ; Rubio Alonso, Juan
Issue Date2016
CitationJournal of the Ceramic Society of Japan 124: 996- 1002 (2016)
AbstractTwo sets of solgel derived glass materials have been prepared and subjected to different thermal treatments. Pyrolysis in inert atmosphere lead to the formation of amorphous Si(B)CO ceramics whereas if the inert atmosphere is changed to NH once the carbon substituents of the preceramic hybrid material transform to a glassy network, the nitrogen is incorporated efficiently while the carbon is retained into the structure, as revealed by Si NMR analysis. Raman spectra show a less graphitized structure in the case of B-rich materials because of the reduced mobility of the C atoms due to the formation of mixed (B)CN bonds.
Publisher version (URL)http://dx.doi.org/10.2109/jcersj2.16071
Identifiersdoi: 10.2109/jcersj2.16071
issn: 1348-6535
Appears in Collections:(ICV) Artículos
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