Results 91 to 100 of about 15,000,705 (247)

In-situ formation mechanism of a superlattice (Ti,Zr,Hf,Nb,Ta)C high-entropy carbide via reactive melt infiltration

Materials & Design
High-entropy carbide ceramics are promising ultrahigh-temperature materials due to their excellent thermal stability and mechanical properties. However, their synthesis typically relies on energy-intensive techniques such as high temperatures and ...
Yuyu Song, Yejie Cao, Yuran Xia, Yansong Liu, Yongsheng Liu   +4 more
doaj   +1 more source

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
Yang Q, Li C, Ouyang H, Gao R, Shen T, Huang J.   +5 more
europepmc   +1 more source

Discrepancies Between Micro Versus Macroscale Viscoelastic Properties in a Microplastic‐Tissue Composite Model

Advanced Engineering Materials, EarlyView.
This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser, Baptiste Le Roi, Omri Leshem, Joshua M. Grolman   +3 more
wiley   +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  

Hierarchical porous (Ta0.2Nb0.2Ti0.2Zr0.2Hf0.2)C high-entropy ceramics prepared by a self-foaming method for thermal insulation

Journal of Advanced Ceramics
To meet the emerging demands for thermal protection materials for hypersonic aircraft, developing porous ultrahigh-temperature ceramics with both robust mechanical properties and superior thermal insulation performance is a critical challenge. Herein, we
Cuiyan Li, Ruinan Gao, Haibo Ouyang, Tianzhan Shen, Zihao Chen, Yanlei Li   +5 more
doaj   +1 more source

Non‐Additive Criteria Assessment in Sustainability Evaluation of High Entropy Alloys: A Toxicity‐Weighted Framework

Advanced Engineering Materials, EarlyView.
Sustainability assessment requires methodologies that appropriately distinguish between additive and non‐additive material properties. A toxicity‐weighted scoring system is developed and applied that accounts for the disproportionate influence of highly toxic constituents through nonlinear weighting functions, providing more realistic estimates than ...
Seth Mehalic, Oladele A. Ogunseitan, Julie M. Schoenung   +2 more
wiley   +1 more source

Is There a Unique Physical Entropy? Micro versus Macro [PDF]

, 2012
Entropy in thermodynamics is an extensive quantity, whereas standard methods in statistical mechanics give rise to a non-extensive expression for the entropy. This discrepancy is often seen as a sign that basic formulas of statistical mechanics should be
Dieks, D.G.B.J., History and Foundations of Science, Dieks, Dennis, Sub Foundations&PhilosophyofNaturSc begr, Andersen, Hanne   +4 more
core   +1 more source

Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy

Journal of Advanced Ceramics
Zircon ceramics have potential applications in next-generation wireless communication because of their low permittivity and adjustable temperature coefficient at microwave frequencies.
Yuheng Zhang, Huaicheng Xiang, Xiaoyu Wu, Yang Zhou, Ying Tang, Liang Fang   +5 more
doaj   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

Advanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang, Jianxiang Zhao, Zhaoqi Chen, Hao Gong, Yinsen Yan, Junlei Tao, Yong Yang   +6 more
wiley   +1 more source

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

Advanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz, Jonas Fell, Hendrik Jost, Stefan Diebels, Hans‐Georg Herrmann   +4 more
wiley   +1 more source