@article{Sciti2025, 
author = {D. Sciti and A. Vinci and L. Zoli and P. Galizia and M. Mor and W. Fahrenholtz and S. Mungiguerra and R. Savino and A. M. Caporale and A. Airoldi},
title = {Elevated temperature performance: Arc-jet testing of carbon fiber reinforced ZrB2 bars up to 2200 °C for strength retention assessment},
year = {2025},
journal = {Journal of Advanced Ceramics},
volume = {14},
number = {2},
pages = {9221022},
keywords = {arc-jet testing, oxidation resistance, ultra-high temperature ceramic matrix composites, mechanical characterization, ZrB2, carbon fibers},
url = {https://www.sciopen.com/article/10.26599/JAC.2024.9221022},
doi = {10.26599/JAC.2024.9221022},
abstract = {For the first time, ultra-high temperature ceramic matrix composite bars were tested inside an arc-jet facility to investigate the impact of oxidation damage on strength retention. The composite bars, which were based on a ZrB2/SiC matrix reinforced with 45 vol% carbon fibers, were produced by slurry impregnation and sintering. The first batch was tested under 3-point (pt) bending, and two additional batches were exposed to plasma of dissociated air up to a temperature of 2200 °C for 2 min or 2.2 min and then subjected to 3-pt bending. More than 75% of the initial strength was retained even after repeated testing, demonstrating the durability and reusability of the material. Volatility diagrams were calculated to explain the oxide layering observed, while a numerical model was developed to correlate the experimental mechanical data with the elastic properties. The decrease of strength was attributed to a reduction of the cross section due to oxidation.}
}