ZrB2‐based ultrahigh‐temperature ceramic with various SiC particle size: Microstructure, thermodynamical behavior, and mechanical properties

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS International Journal of Applied Ceramic Technology Pub Date : 2024-07-27 DOI:10.1111/ijac.14855

Elnaz Irom, Mohammad Zakeri, Mansour Razavi, Mohammad Farvizi

引用次数: 0

Abstract

This study investigated the influences of WC and HfB2 additives along with SiC reinforcement (with various particle sizes) on densification, microstructure, and mechanical properties of ZrB2–SiC composites. The results showed that WC and HfB2 addition formed a solid solution of (Zr,W,Hf)B2 with a core–shell structure, whereas the remaining WC transformed into WB. Moreover, nano‐sized SiC caused a much better impact on densification compared to micro‐sized SiC. A small fraction of localized phases like ZrC, HfB, and (Hf,Zr)C in the form of solid solution were also formed. The maximum room temperature flexural strength and the fracture toughness of the sample containing 150 nm SiC and 8.9 wt.% WB were measured to be 682 17 MPa and 6.5 .3 MPa m1/2, respectively.

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不同碳化硅粒度的 ZrB2 基超高温陶瓷：微观结构、热力学行为和力学性能

本研究探讨了 WC 和 HfB2 添加剂以及 SiC 增强材料（不同粒度）对 ZrB2-SiC 复合材料的致密化、微观结构和力学性能的影响。结果表明，添加的 WC 和 HfB2 形成了具有核壳结构的 (Zr,W,Hf)B2 固溶体，而剩余的 WC 则转化为 WB。此外，与微小尺寸的 SiC 相比，纳米尺寸的 SiC 对致密化的影响更大。此外，还形成了一小部分固溶体形式的局部相，如 ZrC、HfB 和 (Hf,Zr)C。经测量，含有 150 nm SiC 和 8.9 wt.% WB 的样品的最大室温抗折强度和断裂韧性分别为 682 17 MPa 和 6.5 .3 MPa m1/2。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;