Synthesis and thermal behavior of polymeric precursors for Si[BOND]B[BOND]C[BOND]N ceramic

Authors

  • Shaohua Dong,

    1. Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Science, Beijing 100190, China
    2. Graduate School of the Chinese Academy of Science, Beijing 100039, China
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  • Tong Zhao,

    1. Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Science, Beijing 100190, China
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  • Caihong Xu

    Corresponding author
    1. Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Science, Beijing 100190, China
    • Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Science, Beijing 100190, China
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Abstract

Polyborosilazanes (PBSZs) were synthesized by co-ammonolysis of 2,4,6-trichloroborazine and dichloromethylsilane and used as precursors for Si[BOND]B[BOND]C[BOND]N ceramics. The pyrolyzed products were characterized with Fourier transform infrared, X-ray photoeletron spectroscopy, thermogravimetric analysis (TGA), X-ray diffraction, and scanning electron microscopy (SEM). The results indicated the content of B or Si plays an important role in controlling the high temperature behavior of the precursors. The resistance of the ceramics, which were obtained from pyrolysis of PBSZs at 1500°C, toward oxidative attack up to 1000°C was also investigated by TGA and SEM/EDX. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

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