Results 31 to 40 of about 52,226 (161)

Sintering Kinetics of Plasma-Sprayed Zirconia TBCs

, 2007
A model of the sintering exhibited by EB-PVD TBCs, based on principles of free energy minimization, was recently published by Hutchinson et al. In the current paper, this approach is applied to sintering of plasma-sprayed TBCs and comparisons are made ...
Cipitria, A., Clyne, T., Clyne, T.W., Golosnoy, I.O., Golosnoy, I.   +4 more
core   +1 more source

Sol–gel processing and characterization of (RE-Y)-zirconia powders for thermal barrier coatings [PDF]

, 2011
The effect of doping on the structural, morphological and thermal properties of ZrO2–XO1.5 (X=Y, La, Sm, Er) solid solutions for thermal barrier (TBC) applications was investigated. Oxide powders of various compositions from 9.7 to 40 mol% XO1.5 (X=Y, La,
Ansart, Florence, Bonino, Jean-Pierre, M. Dalbin, Fenech, Justine, A. Barnabe, F. Ansart, J.P. Bonino, Barnabé, Antoine, J. Fenech, Dalbin, Michel   +9 more
core   +1 more source

Emerging Materials and Future Strategies for Solid Oxide Electrochemical Cells

Advanced Energy Materials, EarlyView.
Solid oxide electrochemical cells operate under strongly coupled electrochemical and thermodynamic conditions, where performance is constrained by interactions among crystal structure, defect chemistry, and interfacial evolution. This review, based on a structure‐defect‐property‐durability framework, reveals the roles of lattice symmetry and defect ...
Qiuchun Lu, Yufei Zhang, Han Zhao, Pooi See Lee, Daniel H.C. Chua   +4 more
wiley   +1 more source

Novel Ni/Ce(Ti)ZrO₂ Catalysts for Methane Dry Reforming Prepared in Supercritical Alcohol Media

Energies, 2020
To achieve a high activity and coking stability of nickel catalysts in dry reforming of methane, materials comprised of ceria–zirconia doped by Ti were investigated as supports.
Yuliya Bespalko, Ekaterina Smal, Mikhail Simonov, Konstantin Valeev, Valeria Fedorova, Tamara Krieger, Svetlana Cherepanova, Arcady Ishchenko, Vladimir Rogov, Vladislav Sadykov   +9 more
doaj   +1 more source

Alloying Cu, Fe, and Co in Ni/YSZ Electrodes for High‐Temperature CO2 Electrolysis: Impact on TPB Density, Activity, and Carbon Deposition Resistance

Carbon Energy, EarlyView.
Systematic alloying of Ni with Cu, Fe, and Co in Ni/YSZ electrodes modifies active site density up to 43%, decreases activation energies by up to 44%, and reduces carbon deposition fourfold. Cu–Ni alloy is among the most promising alloy catalysts for electrochemical CO2 reduction in SOECs.
Min Jun Oh, Sooin Lee, Jeeho Hong, Kyung Joong Yoon, Ho‐Il Ji, Ji‐Won Son, Jong‐Ho Lee, Kyeounghak Kim, Jongsup Hong, Sungeun Yang   +9 more
wiley   +1 more source

Osseointegration of zirconia implants compared with titanium : an in vivo study

, 2008
Background Titanium and titanium alloys are widely used for fabrication of dental implants. Since the material composition and the surface topography of a biomaterial play a fundamental role in osseointegration, various chemical and physical surface ...
Ulrich Meyer, Rita Depprich, Sirichai Kiattavorncharoen, Michelle Ommerborn, Jörg Handschel, Kübler, Norbert, Zipprich, Holger, Meyer, Ulrich, Hans-Christoph Lauer, Hans-Peter Wiesmann, Holger Zipprich, Handschel, Jörg, Christian Naujoks, Norbert R Kübler, Depprich, Rita, Ommerborn, Michelle, Naujoks, Christian, Kiattavorncharoen, Sirichai, Lauer, Hans-Christoph (Prof. Dr.), Wiesmann, Hans-Peter   +19 more
core   +1 more source

Osseointegration of zirconia implants : an SEM observation of the bone-implant interface [PDF]

, 2008
Background The successful use of zirconia ceramics in orthopedic surgery led to a demand for dental zirconium-based implant systems. Because of its excellent biomechanical characteristics, biocompatibility, and bright tooth-like color, zirconia ...
Lammers, Lydia, Zipprich Holger, Meyer Ulrich, Mahn Eduardo, Kübler, Norbert, Zipprich, Holger, Meyer, Ulrich, Mahn, Eduardo, Lammers Lydia, Handschel, Jörg, Ommerborn Michelle, Wiesmann Hans-Peter, Depprich Rita, Kübler Norbert R, Depprich, Rita, Ommerborn, Michelle, Naujoks Christian, Naujoks, Christian, Handschel Jörg, Wiesmann, Hans-Peter   +19 more
core   +1 more source

Supported nano gold as a recyclable catalyst for green, selective and efficient oxidation of alcohol using molecular oxygen

Orbital: The Electronic Journal of Chemistry, 2011
The myth that gold cannot act as a catalyst has been discarded in view of recent studies, which have demonstrated the high catalytic efficiency of pure nano-gold and supported nano-gold catalysts.
Bashir Dar, Mazahar Farooqui
doaj   +1 more source

Design of High‐Performance MnCo1.5Cu0.5O4 Spinel Contact Material with Optimized Electrical Conductivity and Thermal Stability for Solid Oxide Electrolysis Cells by Cu Doping

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Cu‐doped spinel MnCo1.5Cu0.5O4 exhibits excellent conductivity and stability as SOC contact material. After 1000‐h aging at 850 °C, the contact layer maintains a 10 mΩ cm2 ASR value, and a single‐cell stack achieves a H2O/CO2 co‐electrolysis power density of 0.52 W cm−2.
Haozhen Li, Shuai Yuan, Xingtong Mao, Hao Shi, Hengyong Tu, Chao Ma, Lei Zhu, Zhen Huang   +7 more
wiley   +1 more source

Design and Evaluation of Zirconia Based Thermal Barrier Powders for Advanced Engines [PDF]

Engineering and Technology Journal, 2017
Advanced utility, diesel and turbines engines used widely in aerospace, chemical and oil industries are based on plasma sprayed thermal barrier coatings.
M. Kadhim, M. Hafiz, M. Ali Bash
doaj   +1 more source