The influence of adding Si3N4 on the microstructure and oxidation properties of ZrB2–SiC nanocomposite produced by pressureless sintering
Year: 2025
Type: article
Abstract: One of the composites with exceptional mechanical, thermal, and oxidation resistance properties is ZrB 2 –SiC. In this research, we produced the ZrB 2 –SiC composite with Si 3 N 4 additive (1–2–3 and 4% by volume) in the base composition through sintering without applying pressure. The evaluations included microstructure analysis using a FE-SEM and oxidation properties in an oxyacetylene test chamber under oxygen and C 2 H 4 gas exposure. The results demonstrated that as Si 3 N 4 content increased, the structure became more homogeneous in granulation, with fine and uniform grain formation promoting composite compaction. The oxyacetylene test results showed enhanced oxidation resistance in samples with higher Si 3 N 4 amounts, particularly in the 67 vol% ZrB 2 –10%ZrC–20%SiC–3%Si 3 N 4 sample, which had the lowest mass erosion rate.
Authors: Mohammad Sarhangian, Mehri Mashhadi
Institution: Malek Ashtar University of Technology
Language: English
Subfield: Ceramics and Composites
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,100
OpenAlex ID: W4413848872