Synthesis and thermal behavior of polymeric precursors for SiBCN ceramic

✍ Scribed by Shaohua Dong; Tong Zhao; Caihong Xu

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 463 KB
• Volume: 118
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.32411

✦ Synopsis

Abstract

Polyborosilazanes (PBSZs) were synthesized by co‐ammonolysis of 2,4,6‐trichloroborazine and dichloromethylsilane and used as precursors for SiBC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