Synthesis and characterization of novel SiBOC ceramics: comparison of microwave and ultrasonic application on gelation time

详细信息    查看全文

• 作者：Aysegul Gencer ; Birsen S. Oksal
• 关键词：Silicon boron oxycarbide (SiBOC) ; Ceramic ; Sol–gel ; Gelation time ; Borosiloxane bond ; Microwave
• 刊名：Journal of Sol-Gel Science and Technology
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：73
• 期：1
• 页码：171-180
• 全文大小：1,431 KB
• 参考文献：1. Colombo P, Mera G, Riedel R, Soraru GD (2010) Polymer-derived ceramics: 40?years of research and innovation in advanced ceramics. J Am Ceram Soc 93:1805-837
  2. Pe?a-alonso R, Mariotto G, Gervais C, Babonneau F, Sorarù GD (2007) New insights on the high-temperature nanostructure evolution of SiOC and B-doped SiBOC polymer-derived glasses. Chem Mater 19:5694-702 CrossRef
  3. Nagaiah NR, Kapat JS, An L, Chow L (2006) Novel polymer derived ceramic-high temperature heat flux sensor for gas turbine environment. J Phys 34:458-63 (International MEMS Conference)
  4. Bharadwaj L, Dhamne A, An L, Kapat JS, Chow L (2003) Polymer-derived Si–Al–C–N–O ceramics for high temperature applications. Int Jt Power Gener Conf 5:607-11
  5. Nagaiah NR, Krishnan V, Kapat JS, An L (2005) A conceptual design of a polymer-derived ceramic hot-wire anemometer for gas turbine environment. Power Land Sea Air 7:639-45
  6. Mera G, Riedel R (2009) Organosilicon-based polymers as precursors for ceramics. In: Colombo P, Riedel R, Soraru GD, Kleebe H-J (eds) Polymer derived ceramics: from nanostructure to applications. DEStech Publications Inc, Lancaster, pp 51-9
  7. Riedel R, Mera G, Hauser R, Klonczynski A (2006) Silicon-based polymer-derived ceramics: synthesis properties and applications—a review. J Ceram Soc Jpn 114:425-44 CrossRef
  8. Sorarù GD, Babonneau F, Gervais C, Dallabona N (2000) Hybrid RSiO 1:5/B₂O₃ gels from modified silicon alkoxides and boric acid. J Sol–Gel Sci Technol 18:11-9 CrossRef
  9. Gao Y, Mera G, Nguyen H, Morita K, Kleebe H, Riedel R (2012) Processing route dramatically influencing the nanostructure of carbon-rich SiCN and SiCBN polymer-derived ceramics. Part I: low temperature thermal transformation. J Eur Ceram Soc 32:1857-866 CrossRef
  10. Kleebe H, Blum YD (2008) SiOC ceramic with high excess free carbon. J Eur Ceram Soc 28:1037-042 CrossRef
  11. Liebau V, Hauser R, Riedel R (2004) Amorphous SiBCO ceramics derived from novel polymeric precursors. Comp Rend Chim 7:463-69 CrossRef
  12. Schubert U, Hüsing N (2005) Synthesis of inorganic material. Wiley-VCH Verlag GmbH and Co. KGaA, Weinheim
  13. Riedel R, Mera G, Hauser R, Klonczynski A (2006) Silicon-based polymer-derived ceramics: synthesis properties and applications—a review. J Ceram Soc Jpn 114:425-44 CrossRef
  14. Zhang H, Pantano CG (1990) Synthesis and characterization of silicon oxycarbide glasses. J Am Ceram Soc 73:958-63 CrossRef
  15. Gervais C, Babonneau F, Dallabona N, Soraru GD (2001) Sol–gel-derived silicon-boron oxycarbide glasses containing mixed silicon oxycarbid (SiCxO4-x) and boron oxycarbide (BC yO3-y) units. J Am Ceram Soc 84:2160-164 CrossRef
  16. Wang Q, Fu L, Hu X, Zhang Z, Xie Z (2005) Preparation and properties of borosiloxane gels. J. Appl. Poly. Sci. 99:719-24 CrossRef
  17. Sorarù GD, Dallabona N, Gervais C, Babonneau F (1999) Organically modified SiO₂–B₂O₃ gels displaying a high content of borosiloxane (B–O–Si) bonds. Chem Mater 11:910-19 CrossRef
  18. Schiavon MA, Armelin NA, Yoshida IVP (2008) Novel poly(borosiloxane) precursors to amorphous SiBCO ceramics. Mater Chem Phys 112:1047-054 CrossRef
  19. Tsvetkova IN, Shilova OA, Shilov VV, Shaulov AYu, Gomza YuP, Khashkovskii SV (2006) Sol–gel synthesis and investigation of hybrid organic–inorganic
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Ceramics,Glass,Composites,Natural Materials
  Inorganic Chemistry
  Optical and Electronic Materials
  Nanotechnology
  
• 出版者：Springer Netherlands
• ISSN：1573-4846

文摘

New silicon boron oxycarbide (SiBOC) preceramic polymers were synthesized via sol–gel method by using n-butyltrimethoxysilane and iso-butyltrimethoxysilane as silicon sources, triethylborate and boric acid as boron sources to obtain SiBOC ceramics. The effect of different molar ratios of Boron/Silica (B/Si) and ultrasonic application were investigated on gelation time. Influence of the microwave application on gelation time was performed for the first time, and compared with ultrasonic application. The changes in the structure of SiBOC preceramic with amount of boron, addition of glycerol, ultrasonic and microwave applications were also investigated by Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction technique and 29Si MAS NMR spectroscopy. It was observed that the gelation time (tgel) is reduced with higher amount of boron in the structure as well as ultrasonic and microwave application. Reduction of gelation time with increasing boron amount was related to formation of more Si–O–B (borosiloxane) bonds in the structure. Furthermore, decreases of gelation time with ultrasonic or microwave application may be owing to the acceleration of the hydrolysis and condensation reactions. Pyrolysis of obtained gels under nitrogen atmosphere up to 1,400?°C by 10?K/min heating rate produced solid homogeneous ceramic powders.