Results 31 to 40 of about 6,176 (257)

Broad-high operating temperature range and enhanced energy storage performances in lead-free ferroelectrics

Nature Communications, 2023
The immense potential of lead-free dielectric capacitors in advanced electronic components and cutting-edge pulsed power systems has driven enormous investigations and evolutions heretofore.
Weichen Zhao, Diming Xu, Da Li, Max Avdeev, Hongmei Jing, Mengkang Xu, Yan Guo, Dier Shi, Tao Zhou, Wenfeng Liu, Dong Wang, Di Zhou   +11 more
doaj   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

ULTRA HIGH TEMPERATURE CERAMICS: TANTALUM CARBIDE (TaC)

Havacılık ve Uzay Teknolojileri Dergisi, 2015
Ultra high temperature ceramics (UHTC) are advanced technologic materials class which are used in many application branches especially space and aviation due their specific characteristics such as high hardness, high thermal resistance and corrosion ...
Ekrem Altuncu, Sevim Gökçe Esen
doaj  

Thermodynamic modeling of the Hf-Ta-O system for the design of oxidation resistant HfC-TaC ceramics

Open Ceramics
An improved understanding of the oxidation resistance of HfC-TaC ultra-high temperature ceramics (UHTCs) is developed through modeling of the phase equilibria in the Hf-Ta-O system and HfO2-Ta2O5 isoplethal section. CALculation of PHAse Diagrams (CALPHAD)
Rahim Zaman, Elizabeth J. Opila, Bi-Cheng Zhou   +2 more
doaj   +1 more source

Ultra-dense (Bi, V, B)-oxide-added zircon ceramics fabricated by liquid-phase assisted spark plasma sintering (SPS)

Materials Research Express, 2023
Ultra-high-density zircon (ZrSiO _4 ) ceramics were prepared using the spark plasma sintering (SPS) technique of zircon nanopowder with the addition of three different sintering agents, i.e., Bi _2 O _3 , V _2 O _5 and B _2 O _3 .
Musyarofah Musyarofah, Yuliani P Sari, Allif R Hilmi, Muhammad Z Asrori, Triwikantoro, Mochamad Zainuri, Byung-Nam Kim, Suminar Pratapa   +7 more
doaj   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

Effects of the Concentration of Inorganic Binders and Optical Absorbers on the Phase Formation and Microstructure of Flash‐Lamp‐Annealed Chemically Bonded Phosphate Ceramic Composites

International Journal of Ceramic Engineering & Science
A chemically bonded ceramic composite is synthesized using nanosized alumina powder and aluminum dihydrogen phosphate (Al(H2PO4)3, ADP) as a binder with varying solid volumetric ratios from 50% to 75%.
Eren Ozmen, Mark D. Losego
doaj   +1 more source

Design of smart transforming metal ceramic multilayers

Open Ceramics, 2023
Novel metal ceramic multilayer composites with the ability to phase transform into a single phase ultra-high temperature ceramic are described. These materials offer enhanced low-temperature fracture toughness and reliability without sacrificing high ...
J. Carter Stotts, Gregory B. Thompson, Christopher R. Weinberger   +2 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Dual-phase high-entropy ultra-high temperature ceramics

Journal of the European Ceramic Society, 2020
A series of dual-phase high-entropy ultrahigh temperature ceramics (DPHE-UHTCs) are fabricated starting from N binary borides and (5-N) binary carbides powders. >~99% relative densities have been achieved with virtually no native oxides. These DPHE-UHTCs consist of a hexagonal high-entropy boride (HEB) phase and a cubic high-entropy carbide (HEC ...
Mingde Qin, Joshua Gild, Chongze Hu, Haoren Wang, Md Shafkat Bin Hoque, Jeffrey L. Braun, Tyler J. Harrington, Patrick E. Hopkins, Kenneth S. Vecchio, Jian Luo   +9 more
openaire   +3 more sources