of these studies prove that the preparation of HfC starting from
organometallic polymers at relatively low temperatures is possible,
giving partial crystalline hafnium carbide/carbon mixed phase
systems as final products. Thus, the preceramic polymers described
within this article are interesting candidates for processing of
HfC based coatings or as matrix materials in ceramic matrix
composites.
Acknowledgements
We thank Prof. Ju¨rgen Senker and his group in the Department
of Inorganic Chemistry I, University of Bayreuth for solid state
NMR measurements and related discussions.
Fig. 3 Raman spectrum of pyrolyzed polymer II (1800 ◦C, Ar, 3 K min-1),
l = 623 nm.
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4744 | Dalton Trans., 2011, 40, 4741–4745
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