Results 81 to 90 of about 26,876 (284)

Addressing Degradation of Ni/YSZ Cermet Fuel Electrode in Reversible Solid Oxide Cells

Advanced Energy Materials, EarlyView.
Infiltrating nanostructured ceria (CGO) into Ni/YSZ electrodes significantly enhances durability in reversible solid oxide cells. Performance remains stable over 650 h and 24 redox cycles at 750 °C, despite Ni agglomeration. This approach shifts electrochemical activity toward CGO surfaces and reduces reliance on microstructure optimization, offering a
Kamil Nowicki, Cristian Savaniu, Madhumita Mukhopadhyay, Anna Niemczyk, Ryszard Kluczowski, Jakub Kupecki, John Irvine   +6 more
wiley   +1 more source

Durability of zirconia thermal-barrier ceramic coatings on air-cooled turbine blades in cyclic jet engine operation [PDF]

Thermal barrier ceramic coatings of stabilized zirconia over a bond coat of Ni Cr Al Y were tested for durability on air cooled turbine rotor blades in a research turbojet engine.
Jacobs, R. E., Liebert, C. H., Morse, C. R., Stecura, S.   +3 more
core   +1 more source

Detection and Quantification of Over‐Humidification in Polymer Electrolyte Fuel Cells: Insights into Simulation, Imaging, and Sensors

Advanced Energy and Sustainability Research, EarlyView.
This review highlights advanced methods for detecting and managing over‐humidification in polymer electrolyte fuel cells (PEFCs), emphasizing innovative sensors, simulation techniques, and imaging methods. By addressing the impact of water management on fuel‐cell performance and durability, this study outlines practical and sustainable solutions for ...
Maximilian Käfer, Viktor Hacker, Merit Bodner   +2 more
wiley   +1 more source

Atomically ordered solute segregation behaviour in an oxide grain boundary

Nature Communications, 2016
Solute segregation is challenging to experimentally identify at the atomic scale. Here, the authors report the direct observation of atomic site-dependent solute segregation behaviour in an yttria-stabilized zirconia grain boundary by atomic-resolution ...
Bin Feng, Tatsuya Yokoi, Akihito Kumamoto, Masato Yoshiya, Yuichi Ikuhara, Naoya Shibata   +5 more
doaj   +1 more source

Extreme Thermal Cycling of Anode‐Supported Microtubular Solid Oxide Fuel Cells Using a Novel Test Setup

Advanced Energy and Sustainability Research, EarlyView.
A novel test setup is developed to perform extreme thermal cycling on microtubular solid oxide fuel cells (SOFCs). The tested microtubular SOFC shows excellent tolerance to over 100 extreme thermal cycles at heating/cooling rates of ≈175/100 °C min−1.
Dhruba Panthi, Yanhai Du, Hai Feng
wiley   +1 more source

The Effect of Glazing and Repeated Firing on Color, Translucency, and Flexural Strength of Different Types of Zirconia: An In Vitro Study

Ceramics
This study evaluated the impact of glazing and multiple firing on the flexural strength, translucency, and color stability of three types of zirconia: 3 mol% yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP), 4 mol% yttria partially stabilized ...
Ruwaida Z. Alshali, Mohamed Abdelmageed Awad, Amnah A. Assiri, Shahad A. Aljahdali, Walaa A. Babeer, Dalea M. Bukhary, Mosa M. Altassan, Lulwa E. Al-Turki   +7 more
doaj   +1 more source

Restoration of human tooth enamel

BMEMat, EarlyView.
Human tooth enamel has remarkable properties but lacks self‐repair ability. Existing restorative materials cannot fully replicate enamel's microstructure and function, resulting in low restorative efficiency. This review summarizes the formation process and characteristics of enamel, and current restorative materials and future research directions are ...
Hanlin Liu, Bo Li, Mingrui Gao, Yangbei Li, Xiuyi Yang, Fengshi Li, Zhi Cai, Yi Liu, Shaojia Liu, Hewei Zhao, Lin Guo   +10 more
wiley   +1 more source

Microscopic ion migration in solid electrolytes revealed by terahertz time-domain spectroscopy

Nature Communications, 2019
Here the authors expand the application scope of terahertz spectroscopy to the characterization of electrolyte materials. Based on the measurement of the conductivity of yttria-stabilized zirconia in the terahertz frequency range, unprecedented insight ...
Tomohide Morimoto, Masaya Nagai, Yosuke Minowa, Masaaki Ashida, Yoichiro Yokotani, Yuji Okuyama, Yukimune Kani   +6 more
doaj   +1 more source

Improving the mechanical properties of commercial feldspathic dental porcelain by addition of Alumina-Zirconia

Revista Facultad de Ingeniería Universidad de Antioquia, 2020
Dental ceramics made from Yttria stabilized tetragonal Zirconia polycrystalline (Y-TZP) with feldspathic porcelain veneers have similar mechanical and aesthetic response to natural tooth.
Juliana Gómez Tamayo, Astrid Oasis Rueda Arango, Edgar Alexader Ossa Henao   +2 more
doaj   +1 more source

A Novel Strategy for Preparing High‐Entropy Ceramics Through Full Glass Crystallization

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study focuses on an innovative strategy for preparing high‐entropy ceramics applicable in extreme environmental protection and related fields. The high‐entropy (Eu0.2Gd0.2Y0.2Yb0.2Lu0.2)3Al5O12 samples prepared by the low‐temperature glass crystallization method exhibit a low thermal conductivity (3.58 W m−1 K−1), high thermal expansion (10.85 ...
Zhibiao Ma, Yuxuan Gao, Chenglong Ma, Licheng Zhang, Yuan Zhang, Wenlong Xu, Guoguo Zhang, Jiang Li, Shaowei Feng, Jianqiang Li   +9 more
wiley   +1 more source