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Synthesis and characterization of a new liquid polymer precursor for Si-B-C-N ceramics.
- Source :
-
Journal of Materials Science . Sep2011, Vol. 46 Issue 18, p5940-5947. 8p. 2 Diagrams, 1 Chart, 12 Graphs. - Publication Year :
- 2011
-
Abstract
- new liquid polyborosilazane precursor for Si-B-C-N ceramic was synthesized by co-condensation reaction of boron trichloride, organodichlorosilanes, and hexamethyldisilazane. The structure and properties of polyborosilazane were studied by means of Fourier transform-infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR), rheology, and thermogravimetric analysis (TGA). The conversion of polymer to ceramic and the high-temperature behavior of the new polymer-derived ceramic were investigated by TG-MS, FT-IR, X-ray diffraction (XRD) and high-temperature TGA (HTGA). The ceramics showed good oxidative resistance and thermal stability with weight gain of 1.8 wt% at 1350 °C under air atmosphere and weight loss of 2.6% at 1900 °C under Ar atmosphere. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 46
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 61463837
- Full Text :
- https://doi.org/10.1007/s10853-011-5549-x