Multifunctional tantalum disilicide ceramics sintered at high temperature and high pressure

Yu, Yajie1; He, Shi2; Zhang, Zhengang1,3; Chen, Haihua1; Jin, Peipeng1; Zhong, Binnian1; Zhang, Linhui1; Wang, Liping4; Lu, Cheng1,2

2023-09-01

10.1111/jace.19460

JOURNAL OF THE AMERICAN CERAMIC SOCIETY   Impact Factor & Quartile

0002-7820

1551-2916

["Silicide ceramics are attracted significant attention due to their exceptional physical properties. However, their inherent brittleness at room temperature limits their practical applications. Here, we aim to improve the mechanical properties of tantalum disilicide (TaSi2) ceramics by modifying the preparation methods and sintering conditions. We fabricate the dense TaSi2 ceramics using high-pressure and high-temperature (HPHT) sintering technology at 5.5 GPa and 800-1300 & DEG;C. We characterize the microstructures, mechanical, and electronic properties of bulk TaSi2 ceramics at HPHT conditions. Our results indicate an enhancement in the fracture toughness of 11.97 MPa m1/2 for TaSi2 ceramics. More importantly, the electrical conductivity (47.13 x 105 S/m) of TaSi2 ceramic is increased and verified by theoretical calculations. These findings provide crucial insights for future applications of TaSi2 and offer valuable avenues for the design and synthesis of advanced ceramic materials.","Graphical Abstract: Multifunctional tantalum disilicide ceramics are sintered at 5.5 GPa and 1000 & DEG;C. image"]

electrical conductivity fracture toughness microstructures Vickers hardness

SCI

English

Others

National Natural Science Foundation of China["12364005","12174352"]

Materials Science

Materials Science, Ceramics

WOS:001066882500001

WILEY

MATERIALS SCIENCE

Web of Science

1.Qinghai Univ, Dept Mech Engn, Xining 810016, Peoples R China
2.China Univ Geosci Wuhan, Sch Math & Phys, Wuhan 430074, Peoples R China
3.Sichuan Univ, Inst Atom & Mol Phys, Chengdu, Peoples R China
4.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen, Peoples R China

Yu, Yajie,He, Shi,Zhang, Zhengang,et al. Multifunctional tantalum disilicide ceramics sintered at high temperature and high pressure[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2023.

Yu, Yajie.,He, Shi.,Zhang, Zhengang.,Chen, Haihua.,Jin, Peipeng.,...&Lu, Cheng.(2023).Multifunctional tantalum disilicide ceramics sintered at high temperature and high pressure.JOURNAL OF THE AMERICAN CERAMIC SOCIETY.

Yu, Yajie,et al."Multifunctional tantalum disilicide ceramics sintered at high temperature and high pressure".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2023).