Letter | Published:

Pyrolysis of a polyborodiphenylsiloxane

Naturevolume 266pages521522 (1977) | Download Citation



WE have previously reported successful production of a high-strength continuous SiC fibre1–3, a high flexural strength SiC sintered body4 and a heat-resistant Fe–Cr alloy5 by converting organometallic polymer polycarbosilane (PC) as the binder to an inorganic in thermal decomposition. We then found that in the thermal decomposition of organometallic polymers such as PC, an amorphous state exists before formation of the (SiC) fine particles; this SiC amorphous state is hardly possible in inorganic reactions. The process of thermal decomposition of organometallic polymers is little known. To obtain general information on the phenomenon, we have newly synthesised multi-element polyborodiphenylsiloxane containing oxygen (B, C, Si, O, H) compared with PC composed of Si, C and H, and observed the process of its thermal decomposition.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Yajima, S., Hayashi, J. & Omori, M. Chem. Lett. 931 (1975).

  2. 2

    Yajima, S., Okamura, K., Hayashi, J. & Omori, M. J. Am. ceram. Soc. 59, 324 (1976).

  3. 3

    Yajima, S., Hayashi, J., Omori, M. & Okamura, K. Nature 261, 683 (1976).

  4. 4

    Yajima, S. et al. Nature 264, 238 (1976).

  5. 5

    Yajima, S., Shishido, T. & Kayano, H. Nature 264, 237 (1976).

  6. 6

    Stone, F. G. A. & Graham, W. A. G. Inorganic Polymers, 185 (Academic, New York, 1962).

  7. 7

    Vale, R. L. J. chem. Soc. 2252 (1960).

Download references

Author information


  1. The Oarai Branch, The Research Institute for Iron, Steel and Other Metals, Tohoku University, Oarai, Ibaraki-ken, 311-13, Japan



  1. Search for SEISHI YAJIMA in:

  2. Search for JOSABURO HAYASHI in:

  3. Search for KIYOHITO OKAMURA in:

About this article

Publication history



Issue Date



Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.