Abstract
Polymer-derived ceramic nanocomposites (PDC-NCs) can be synthesized via thermal conversion of suitable single-source precursors, leading in a first step to amorphous single-phase ceramics, which subsequently undergo phase separation pro- cesses to furnish bi- or multiphase ceramic nanocomposites. PDC-NCs have been shown to be excellent candidate materials suitable for applications at ultrahigh-temperatures and under harsh environments. [1,2] In the present work, amorphous SiHf(B)CN-based PDC-NCs were synthesized via cross-link- ing and ceramization of a polysilazane which was chemically modified by Hf(NEt2)4 and borane dimethylsulfide complex (BH3.SMe2). High-temperature annealing of the obtained amorphous SiHf(B)CN ceramics in nitrogen atmosphere led to HfN/Si(B)CN nanocom-posites; whereas HfB2/Si(B)CN was obtained upon annealing in argon atmosphere. The presented results emphasize a convenient preparative approach to nanos- tructured ultrahigh-temperature stable materials starting from a greatly flexible/compliant single-source precursor.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Zeitschrift für anorganische und allgemeine Chemie
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
