Peer-reviewedCC BY-NCAdvanced Engineering Materials
Oxidation Resistance and Microstructural Analysis of Polymer-Derived (HfxTa1−x)C/SiC Ceramic Nanocomposites
Abstract
The oxidation behavior of polymer‐derived (Hf x Ta 1− x )C/SiC nanocomposites at 1200 °C and 1400 °C for up to 100 h is investigated in this work. Overall, the chemical modification of the polycarbosilane‐based precursor with Hf and Ta leads to an improved oxidation behavior due to an increased densification. Shifting the Hf/Ta ratio from (Hf 0.2 Ta 0.8 )C/SiC to (Hf 0.7 Ta 0.3 )C/SiC results in an improved oxidation behavior due to Hf 6 Ta 2 O 17 formation and the reduction of Ta 2 O 5 formation, which reduces cracking of the samples. The formation and microstructure of SiO 2 as well as the internal oxidation of (Hf x Ta 1− x )C precipitates is explained by thermodynamic and kinetic considerations.
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BibTeX
@article{petry2026oxidation,
title = {{Oxidation Resistance and Microstructural Analysis of Polymer-Derived (HfxTa1−x)C/SiC Ceramic Nanocomposites}},
author = {Nils-Christian Petry and Nathalie Thor and Jan Bernauer and Anke Silvia Ulrich and Emanuel Ionescu and Ralf Riedel and Astrid Pundt and Mathias Christian Galetz and Maren Lepple},
journal = {Advanced Engineering Materials},
year = {2026},
month = oct,
doi = {10.1002/adem.202302023},
url = {https://hal.science/hal-05789811v1},
note = {CC BY-NC},
}
RIS
TY - JOUR
TI - Oxidation Resistance and Microstructural Analysis of Polymer-Derived (HfxTa1−x)C/SiC Ceramic Nanocomposites
AU - Nils-Christian Petry
AU - Nathalie Thor
AU - Jan Bernauer
AU - Anke Silvia Ulrich
AU - Emanuel Ionescu
AU - Ralf Riedel
AU - Astrid Pundt
AU - Mathias Christian Galetz
AU - Maren Lepple
PY - 2026
DA - 2026/10/09
JO - Advanced Engineering Materials
DO - 10.1002/adem.202302023
UR - https://hal.science/hal-05789811v1
AB - The oxidation behavior of polymer‐derived (Hf x Ta 1− x )C/SiC nanocomposites at 1200 °C and 1400 °C for up to 100 h is investigated in this work. Overall, the chemical modification of the polycarbosilane‐based precursor with Hf and Ta leads to an improved oxidation behavior due to an increased densification. Shifting the Hf/Ta ratio from (Hf 0.2 Ta 0.8 )C/SiC to (Hf 0.7 Ta 0.3 )C/SiC results in an improved oxidation behavior due to Hf 6 Ta 2 O 17 formation and the reduction of Ta 2 O 5 formation, which reduces cracking of the samples. The formation and microstructure of SiO 2 as well as the internal oxidation of (Hf x Ta 1− x )C precipitates is explained by thermodynamic and kinetic considerations.
SN - 1438-1656
SN - 1527-2648
ER -