In situ synthesis, mechanical properties, and reaction mechanism of the WB2–SiC composites

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2024-10-22 DOI:10.1111/ijac.14965

Guihao Zhang, Ying Long, Shixuan Wang, Hua-Tay Lin, Hongfei Hu

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引用次数: 0

Abstract

In the present work, WB₂–SiC composite powders containing 20 vol.% of SiC were in situ synthesized by the boro/carbothermal reduction with WO₃, SiO₂, B₄C, and carbon black as raw materials at 1400°C, 1500°C, and 1600°C, respectively. The as-synthesized composite powders were then consolidated by spark plasma sintering (SPS) technique to obtain WB₂–SiC composite bulk samples. The experimental results showed that the relative density of the WB₂–SiC composite ceramic samples achieved in this study was higher than 97.5%. Also, electronic microscopy observations showed that SiO₂ had reacted completely during the preparation process, and the SiC grains were homogenously embedded among the WB₂ grains with the formation of a three-dimensional structure. The Vickers hardness and fracture toughness values of the composite ceramic fabricated by powder heat treated at 1400°C were 24.6 ± 0.7 GPa and 5.4 ± 0.7 MPa·m^1/2, respectively, which were the highest among three samples prepared in this study.

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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;