Results 31 to 40 of about 31,851 (184)

Oxidation resistance of ODS alloy PM2000 from 880°C to 1400°C [PDF]

, 1998
Oxidation resistance of ODS alloy PM2000 from 880°C to 1400°
Alexis, Joël, Bernhart, Gérard, Lours, Philippe   +2 more
core   +1 more source

Fabrication‐Driven Oxidation Pathways in Y/Hf‐Modified High‐Entropy Alloys: From Elemental Segregation to Oxide Homogeneity

Rare Metals, EarlyView.
ABSTRACT This study elucidates the oxidation mechanisms governing Y/Hf‐doped AlCoCrFeNiTi high‐entropy alloys (HEAs) and reveals the pivotal role of fabrication processes in dictating high‐temperature oxidation behavior. We demonstrate that casting and spark plasma sintering (SPS) promote Y/Hf segregation, resulting in heterogeneous oxide formation and
Huaqing Yi, Jiapeng Zheng, Jiawen Zhang, Yi Yang, Binbin He, Wenjun Lu   +5 more
wiley   +1 more source

Novel Non‐Equimolar High‐Entropy Zirconates With Superior Thermophysical Properties

Rare Metals, EarlyView.
ABSTRACT Rare‐earth zirconates (RE2Zr2O7) are promising candidates for topcoat materials in thermal barrier coatings (TBCs). However, their practical application in TBCs is limited by poor fracture toughness and low thermal expansion coefficient (TEC).
Taoyi Lu, Zhiqin Wen, Suzhen Kang, Li Tang, Jiyuan Huang, Gaoxiang Wei, Rui Zhang, Yuhong Zhao   +7 more
wiley   +1 more source

Enhanced Electrocatalytic and Cathode‐Electrolyte Interfacial Properties With a Pr‐Based Simple Perovskite/Ruddlesden‐Popper Nanocomposite Cathode in Protonic Ceramic Fuel Cells

Small, EarlyView.
A novel Pr‐based nanocomposite cathode consisting of PrNi0.7Co0.3O3‐δ (simple perovskite) and Pr4Ni3O10+δ (Ruddlesden‐Popper) demonstrates enhanced oxygen absorption/surface diffusion and oxygen reduction reaction activity than pure PrNi0.7Co0.3O3‐δ. Combined with the precursor‐based cathode layer deposition technique, the nanocomposite cathode also ...
Ryo Kitamura, Eric Yoshida, Talia Marie Sebastian, Yuchen Zhang, Minda Zou, Jiawei Zhang, Ted Burye, Zeyu Zhao, Dong Ding, Kai He, Jianhua Tong   +10 more
wiley   +1 more source

Electrical and Hydrogen Reduction Enhances Kinetics in Doped Zirconia and Ceria: II. Mapping Electrode Polarization and Vacancy Condensation in YSZ

, 2017
Knowing the correlation between grain boundary mobility and oxygen potential in yttria stabilized zirconia (YSZ), we have utilized the grain size as a microstructural marker to map local oxygen potential. Abrupt oxygen potential transition is established
Chen, I-Wei, Dong, Yanhao
core   +1 more source

Multifaceted Behavior and Functional Versatility of Ferritic Stainless Steels, Part I: Applications and Processing, a Review

steel research international, EarlyView.
This review investigates the processing‐microstructure‐property relationships in ferritic stainless steels (FSSs). It highlights advances in deformation behavior, heat treatments, surface modifications, and alloying effects. Theoretical models, including Johnson‐Mehl‐Avrami‐Kolmogorov, Arrhenius, nucleation theory, and diffusion theories, are discussed
Shahab Bazri, Carlo Mapelli, Silvia Barella, Andrea Gruttadauria, Davide Mombelli   +4 more
wiley   +1 more source

Effects of B‐Site Nb Substitution on ORR Activity in Perovskite Cathode Materials for Solid Oxide Fuel Cells

SusMat, EarlyView.
B‐site Nb substitution in PSCF perovskite cathodes modulates oxygen vacancy formation and electronic structure, thereby tailoring oxygen adsorption and ion transport properties. A moderate Nb level (5–10%) optimizes the balance between surface activity and conductivity, enhancing ORR kinetics and SOFC performance. ABSTRACT Solid oxide fuel cells (SOFCs)
Qiuchun Lu, Yufei Zhang, Yongkang Tan, Tianchuan Qian, Jiaxin Yan, Feng Jiang, Adit Gupta, Stefano Botticini, Federica Rigoni, Elisabetta Comini, Daniel H. C. Chua, Pooi See Lee   +11 more
wiley   +1 more source

Long‐Term Clinical, Radiographic and Esthetic Outcomes of Zirconia Dental Implants: A 10‐Year Prospective Multicenter Study

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objectives This study aimed to prospectively investigate the long‐term clinical performance of a commercially available one‐piece zirconia dental implant system over 10 years. Material and Methods A multicenter, open‐label study was conducted at three clinical centers in Germany.
S. Roehling, K. H. Bormann, M. M. Bornstein, S. Laval, F. Thieringer, M. Gahlert   +5 more
wiley   +1 more source

The luminescence of yitria stabilized zirconia doped with Bi2O3 [PDF]

, 1984
Yttria stabilized zirconia doped with Bi2O3 shows an efficient luminescence due to the Bi3+ ions.
Blasse, G., Burggraaf, A.J., Winnubst, A.J.A., Zhiran, Hao   +3 more
core   +2 more sources

Is Additive Manufacturing of Dental Zirconia Comparable to Subtractive Methods When Considering Printing Orientation and Layer Thickness? A Systematic Review and Meta‐Analysis

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective The aim of this systematic review and meta‐analysis was to determine whether the production of monolithic dental zirconia using additive manufacturing (AM), with consideration of different printing directions and layer thicknesses, enhances its mechanical and physical properties relative to subtractive manufacturing (SM ...
Mirelle M. Ruggiero, Letícia V. S. Souza, Marcela B. Magno, Xuan Song, Lucianne C. Maia, Altair A. D. B. Cury, Yu Zhang   +6 more
wiley   +1 more source