Results 21 to 30 of about 14,999,085 (143)

Dual-Porosity (Ta_0.2Nb_0.2Ti_0.2Zr_0.2Hf_0.2)C High-Entropy Ceramics with High Compressive Strength and Low Thermal Conductivity Prepared by Pressureless Sintering. [PDF]

Materials (Basel), 2023
Porous (Ta0.2Nb0.2Ti0.2Zr0.2Hf0.2)C high-entropy ceramics (HEC) with a dual-porosity structure were fabricated by pressureless sintering using a mixture powder of ceramic precursor and SiO2 microspheres.
Yang Q, Li C, Ouyang H, Gao R, Shen T, Huang J.   +5 more
europepmc   +2 more sources

Valence electron concentration as key parameter to control the fracture resistance of refractory high-entropy carbides. [PDF]

Sci Adv, 2023
Although high-entropy carbides (HECs) have hardness often superior to that of parent compounds, their brittleness-a problem shared with most ceramics-has severely limited their reliability.
Sangiovanni DG, Kaufmann K, Vecchio K.
europepmc   +2 more sources

Preparation and Mechanical Properties of (TiCrZrNb)C₄-SiC Multiphase High-Entropy Ceramics. [PDF]

Materials (Basel)
Five carbide powders, TiC, Cr3C2, ZrC, NbC and SiC, were selected as raw materials and mixed by dry or wet milling. Then (TiCrZrNb)C4-SiC multiphase ceramics were successfully prepared by spark plasma sintering (SPS) at 1900 °C, using D-HECs-1900 ...
Wen C, Xu S, Li B, Gan S, Wang L, Chen K, Xue Y, Fang Z, Zhao F.   +8 more
europepmc   +2 more sources

Design high-entropy carbide ceramics from machine learning

npj Computational Materials, 2022
High-entropy ceramics (HECs) have shown great application potential under demanding conditions, such as high stresses and temperatures. However, the immense phase space poses great challenges for the rational design of new high-performance HECs.
Jun Zhang, Biao Xu, Yaoxu Xiong, Shihua Ma, Zhe Wang, Zhenggang Wu, Shijun Zhao   +6 more
doaj   +1 more source

From High-Entropy Ceramics (HECs) to Compositionally Complex Ceramics (CCCs) [PDF]

, 2022
This invited talk will review a series of our recent studies on high-entropy ceramics (HECs) and compositionally complex ceramics (CCCs) and discuss the future perspective. Various single-phase equimolar quinary (five-component) HECs, e.g., MB2, MB, M3B4,
Luo, Jian
core  

Synthesis of spray deposited transition metals doped (Cr, Mn, Fe, Ni, and Cu) compositionally complex ZnO thin films with enhanced band gap and magnetism

Results in Materials, 2022
Compositionally complex ceramics (CCCs) is now considered as a subgroup of high entropy ceramics (HECs); which focuses on the further opportunities of exploring wide compositional spaces and low entropy options of HECs.
Md Rahat Al Hassan, Asrafuzzaman, Md Aminul Islam, Kamruzzaman Salam, Kazi Faiza Amin, Md Khalid Hasan   +5 more
doaj   +1 more source

Mechanism and kinetics of high-temperature oxidation of medium- and high-entropy carbides in air

Materials & Design, 2023
Medium- and high-entropy carbides (MECs and HECs) have a wide range of advanced applications and, in many cases, outperform monocarbides. However, the behavior, oxidation mechanisms, and factors defining oxidation resistance of some popular HECs at high ...
Sergey Yudin, Alexey Sedegov, Dmitry Moskovskikh, Sergey Volodko, Kirill Kuskov, Veronika Suvorova, Svetlana Danilova-Tretiak, Stepan Vorotilo, Andrey Nepapushev, Alexander Khort   +9 more
doaj   +1 more source

High-Entropy Ceramics

, 2020
High-entropy ceramics is an emerging class of high-entropy materials with properties superior to conventional ceramics. Recent research has been focused on the development of new high-entropy ceramic compositions.
Zhang, Hanzhu,, Akhtar, Farid,, Alvi, Sajid,   +2 more
core   +1 more source

A novel high entropy CoFeCrNiCu alloy filler to braze SiC ceramics [PDF]

, 2022
In order to reduce intermetallic compound formations in brazed joints, a CoFeCrNiCu high entropy alloy was invented and employed to braze SiC ceramics.
Yang, Yunlong, Cao, Wei, Tan, Caiwang, Wang, Gang, Huttula, Marko, He, Rujie   +5 more
core   +1 more source

Synthesis and mechanical and elevated temperature tribological properties of a novel high-entropy (TiVNbMoW)C4.375 with carbon stoichiometry deviation

Journal of Advanced Ceramics, 2023
High-entropy carbides are a nascent group of ceramics that are promising for high-temperature applications due to the combination of good stability, high hardness (H), high strength, and superior creep resistance that they display.
Jicheng Li, Yanchun Zhou, Yunfeng Su, Shuna Chen, Qiuan Sun, Hengzhong Fan, Junjie Song, Litian Hu, Yongsheng Zhang   +8 more
doaj   +1 more source