The influence of adding Si3N4 on the microstructure and oxidation properties of ZrB2–SiC nanocomposite produced by pressureless sintering

IF 2.7 4区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2025-08-30 DOI:10.1016/j.bsecv.2025.100467

Mohammad Sarhangian, Mehri Mashhadi

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Abstract

One of the composites with exceptional mechanical, thermal, and oxidation resistance properties is ZrB₂–SiC. In this research, we produced the ZrB₂–SiC composite with Si₃N₄ 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 C₂H₄ gas exposure. The results demonstrated that as Si₃N₄ 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 Si₃N₄ amounts, particularly in the 67 vol% ZrB₂–10%ZrC–20%SiC–3%Si₃N₄ sample, which had the lowest mass erosion rate.

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添加Si3N4对无压烧结ZrB2-SiC纳米复合材料微观结构和氧化性能的影响

ZrB2-SiC是一种具有优异机械、热和抗氧化性能的复合材料。在本研究中，我们在基体成分中加入Si3N4添加剂（1-2-3和体积比4%），通过不加压烧结制备了ZrB2-SiC复合材料。评估包括使用FE-SEM进行微观结构分析，以及在氧气和C2H4气体暴露下在氧乙炔测试室中的氧化性能。结果表明：随着Si3N4含量的增加，制粒时结构更加均匀，颗粒形成细小均匀，有利于复合压实；氧乙炔试验结果表明，Si3N4含量越高，样品的抗氧化能力越强，特别是67 vol% ZrB2-10%ZrC-20%SiC-3%Si3N4样品的质量侵蚀率越低。

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来源期刊

Boletin de la Sociedad Espanola de Ceramica y Vidrio 工程技术-材料科学：硅酸盐

CiteScore

5.50

自引率

2.90%

发文量

审稿时长

103 days

期刊介绍： The Journal of the Spanish Ceramic and Glass Society publishes scientific articles and communications describing original research and reviews relating to ceramic materials and glasses. The main interests are on novel generic science and technology establishing the relationships between synthesis, processing microstructure and properties of materials. Papers may deal with ceramics and glasses included in any of the conventional categories: structural, functional, traditional, composites and cultural heritage. The main objective of the Journal of the Spanish Ceramic and Glass Society is to sustain a high standard research quality by means of appropriate reviewing procedures.