Determination of Silicon Content in SiC Ceramics Precursor by Modified Titration

Abstract:

Polycarbosilane (PCS), an important precursor for manufacture of silicon carbide (SiC) ceramics, was prepared and analyzed to determine its chemical composition. The major elements of silicon (Si) and carbon (C) in Si-C backbones and side chains in PCS represent more than 80% with minor elements of oxygen and hydrogen being less than 20%. In this work, a conventional potassium silicofluoride volumetric method was explored and modified for establishing a standard routine procedure to evaluate Si content in PCS. The optimal conditions were investigated using an orthogonal designed four-factor-three-level normal experimental scheme. The suitable parameters and standard procedure to analyze Si in PCS were obtained.

• Periodical: Key Engineering Materials (Volume 492)
• Pages: 441-445
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.492.441
• Online since: September 2011
• Authors: Lu Jiao Yang, Xuan Cheng, Ying Zhang, Jia Liu
• Keywords: Orthogonal Design, Polycarbosilane, SiC Ceramics Precursor, Silicon Content

References

[1] S. Yajima, J. Hayashi, M. Omori , et al.: Nature Vol. 261 ( 1976), p.683.

[2] Y. Hasegawa, M. Iimura and S. Yajima: J. Mater. Sci. Vol. 15 (1980), p.720.

[3] H. Q. Ly, R. Taylor, R. J. Day, et al.: J. Mater. Sci. Vol. 36 (2001), p.4045.

[4] S. Yajima, T. Iwai, T. Yamamura, et al.: J. Mater. Sci. Vol. 16 (1981), p.1349.

[5] H. Ichikawa, F. Machino, H. Teranishi, et al.: J. Am. Chem. Soc. Vol. 224 (1989), p.619.

[6] T. Ishikawa, T. Yamamura and K. Okamura: J. Mater. Sci. Vol. 27 (1992), p.6627.

[7] T. Shimoo, K. Okamura, I. Tsukada, et al.: J. Mater. Sci. Vol. 34 (1999), p.5623.

[8] X. Z. Cheng, Z. F. Xie, Y. C. Song, et al.: J. Appl. Polym. Sci. Vol. 99 (2006), p.1188.

[9] D. X. Yang, Y. C. Song and Z. Y. Li: Sci. China Ser. E Vol. 51 (2008), p.1445.

[10] T. Ishikawa, Y. Kohtoku and K. Kumagawa: J. Mater. Sci. Vol. 33 (1998), p.161.

[11] K. Qin: Foshan Ceram. Vol. 11 ( 2001), p.20.

[12] C. M. Zheng, Liu S. L., Li X. D., et al.: Acta Phys-Chim. Sin. Vol. 24 (2008), p.971.

[13] M. Yan, W. Song and C. Zhao-hui: Ceram. Int. Vol. 36 (2010), p.2455.

[14] X. H. Mao, Y. C. Song, W. Li, et al.: J. Appl. Polym. Sci. Vol. 105 (2007), p.1651.

[15] W. Li, Y. Song and X. Mao: J. Mater. Sci. Vol. 41 (2006), p.7011.

[16] H. Q. Ly, R. Taylor, R. J. Day, et al.: J. Mater. Sci. Vol. 36 (2001), p.4037.

[17] Y. F. Wang: Doctor Degree Thesis (National University of Defense Technology, Changsha, China, 2004).

[18] S. Tang: Special Steel Tech.

[2] (2003), p.32.