High-temperature phase and microstructure evolution of polymer-derived SiZrCN and SiZrBCN ceramic nanocomposites
Abstract
A zirconium and a zirconium/boron containing single‐source precursor were synthesized via chemical modification of a commercially available polysilazane (Durazane 1800) with tetrakis (dimethylamido) zirconium (IV) (TDMAZ) as well as with both TDMAZ and borane dimethyl sulfide complex, respectively. The polymer‐to‐ceramic transformation of the precursors into SiZrCN and SiZrBCN ceramics as well as the thermal evolution of their phase composition and microstructure was studied. The pyrolysis of the precursors led to the formation of amorphous SiZrCN and SiZrBCN ceramics. Interestingly, the as prepared SiZrBCN ceramic was single‐phasic and fully featureless; whereas SiZrCN exhibited the presence of nano‐sized ZrO 2 particles; however, only very localized in close proximity to internal surfaces. Heat treatment at higher temperatures induced crystallization processes in both prepared ceramics. Thus, at temperatures beyond 1500°C, cubic ZrC x N y , β‐Si 3 N 4 as well as β‐SiC were generated. It was shown that the incorporation of B into SiZrCN suppressed the crystallization of ZrC x N y and, in addition, impeded the reaction of SiN x with C, resulting in an improved thermal stability of SiZrBCN compared to SiZrCN ceramic. Moreover boron was shown to be mainly located in the sp 2 ‐hybridized “free” carbon present in SiZrBCN, forming a turbostratic BCN phase which has been unequivocally detected by means of high‐resolution transmission electron microscopy (HRTEM) and energy‐dispersive X‐ray spectroscopy (EDS).
Related
- Effect of pyrolysis temperature on the microstructure and thermal conductivity of polymer-derived monolithic and porous SiC ceramics
- In-situ polymer-derived SiC/Si(B)OC ceramic nanocomposites: A sustainable potential candidate for high-temperature thermoelectric applications
- Synthesis of polymer-derived graphene/silicon nitride-based nanocomposites with tunable dielectric properties
- Oxidation Resistance and Microstructural Analysis of Polymer-Derived (HfxTa1−x)C/SiC Ceramic Nanocomposites
- Microstructural evolution, phase transformations and magnetic characteristics of Fe@Fe3O4@NaCl core-shell nanocomposites when varying the EB PVD synthesis temperature
BibTeX
@article{feng2026hightemperature,
title = {{High-temperature phase and microstructure evolution of polymer-derived SiZrCN and SiZrBCN ceramic nanocomposites}},
author = {Bo Feng and Johannes Peter and Claudia Fasel and Qingbo Wen and Yue Zhang and Hans-Joachim Kleebe and Emanuel Ionescu},
journal = {Journal of the American Ceramic Society},
year = {2026},
month = oct,
doi = {10.1111/jace.17149},
url = {https://hal.science/hal-05789871v1},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - High-temperature phase and microstructure evolution of polymer-derived SiZrCN and SiZrBCN ceramic nanocomposites
AU - Bo Feng
AU - Johannes Peter
AU - Claudia Fasel
AU - Qingbo Wen
AU - Yue Zhang
AU - Hans-Joachim Kleebe
AU - Emanuel Ionescu
PY - 2026
DA - 2026/10/09
JO - Journal of the American Ceramic Society
DO - 10.1111/jace.17149
UR - https://hal.science/hal-05789871v1
AB - A zirconium and a zirconium/boron containing single‐source precursor were synthesized via chemical modification of a commercially available polysilazane (Durazane 1800) with tetrakis (dimethylamido) zirconium (IV) (TDMAZ) as well as with both TDMAZ and borane dimethyl sulfide complex, respectively. The polymer‐to‐ceramic transformation of the precursors into SiZrCN and SiZrBCN ceramics as well as the thermal evolution of their phase composition and microstructure was studied. The pyrolysis of the precursors led to the formation of amorphous SiZrCN and SiZrBCN ceramics. Interestingly, the as prepared SiZrBCN ceramic was single‐phasic and fully featureless; whereas SiZrCN exhibited the presence of nano‐sized ZrO 2 particles; however, only very localized in close proximity to internal surfaces. Heat treatment at higher temperatures induced crystallization processes in both prepared ceramics. Thus, at temperatures beyond 1500°C, cubic ZrC x N y , β‐Si 3 N 4 as well as β‐SiC were generated. It was shown that the incorporation of B into SiZrCN suppressed the crystallization of ZrC x N y and, in addition, impeded the reaction of SiN x with C, resulting in an improved thermal stability of SiZrBCN compared to SiZrCN ceramic. Moreover boron was shown to be mainly located in the sp 2 ‐hybridized “free” carbon present in SiZrBCN, forming a turbostratic BCN phase which has been unequivocally detected by means of high‐resolution transmission electron microscopy (HRTEM) and energy‐dispersive X‐ray spectroscopy (EDS).
SN - 0002-7820
SN - 1551-2916
ER -