Iranian Journal of Ceramic Science & Engineering
Volume 12, Issue 4 (winter 2024)
2024, 12(4): 37-49 |
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adeli ghale R, balak Z. Fabrication of Medium Entropy (Zr1-2xHfxTix)B2 composite and charectrization of its properties. Iranian Journal of Ceramic Science & Engineering 2024; 12 (4) :37-49
URL: http://ijcse.ir/article-1-957-en.html
URL: http://ijcse.ir/article-1-957-en.html
1- Department of Materials Science and Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2- Department of Materials Science and Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran ,zbalak1983@gmail.com
2- Department of Materials Science and Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran ,
Abstract: (416 Views)
In the present study, the ceramic composite (Zr1-2xHfxTix)B2 was synthesized using the reactive spark plasma sintering (RSPS) method for two different amounts of B4C: one stoichiometric and the other with a 1.1-fold increase, at a temperature of 2000 degrees Celsius for 10 minutes. The microstructure, density, and hardness were evaluated. The results showed that the presence of additional B4C (1.1-fold increase) facilitated further reactions of the oxide powders with reducing agents and the synthesis of (Zr1-2xHfxTix)B2. The strain measured in the stoichiometric sample was 0.24, while in the sample with the 1.1-fold increase of B4C, it was 0.44. The higher strain in the sample with increased B4C indicates the formation of a greater amount of solid solution of (Zr1-2xHfxTix)B2 compared to the stoichiometric sample. It was found that in the sample with additional B4C, the relative density was 87.1% and the hardness (10.6 GPa) was higher than that of the stoichiometric sample, which had a relative density of 82.3% and a hardness of 9.4 GPa.
Keywords: Fracture toughness – Ultra High Temperature Ceramics – spark plasma sinterig - (Zr1-2xHfxTix)B2, Sinterability
Type of Study: Research |
Subject:
New Methods of Processing and Fabrication of Ceramics
Received: 2024/05/9 | Accepted: 2024/10/8
Received: 2024/05/9 | Accepted: 2024/10/8
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