Results 91 to 100 of about 3,767 (242)

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

Synthetic Access to Alkali Metal Selenides via Ball Milling

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
We report the synthesis of alkali metal selenides through reactive ball milling under an argon atmosphere. This mechanochemical pathway is solvent‐free and can be performed at room temperature within minutes to hours. The synthesis of several sodium polyselenides (Na2Sen) and alkali metal selenides (A2Se, A = K, Rb, Cs) is investigated and the received
Anahita I. A. Emminghaus, Josina Papenfuß, Alisha Mertens, Bertold Rasche   +3 more
wiley   +1 more source

Translucency of recent zirconia materials and material-related variables affecting their translucency: a systematic review and meta-analysis

BMC Oral Health
Background Recent forms of translucent zirconia material have been developed, offering a wide range of options and varieties for enhancing aesthetics, making it a preferred choice in the field of prosthetic dentistry.
Mahinour Yousry, Ihab Hammad, Mohamed El Halawani, Moustafa Aboushelib   +3 more
doaj   +1 more source

Factors Affecting the Color Change of Monolithic Zirconia Ceramics: A Narrative Review

Journal of Functional Biomaterials
Zirconia restorations are widely used in dentistry due to their high esthetic expectations and physical durability. However, zirconia’s opaque white color can compromise esthetics.
Ebru Binici Aygün, Esra Kaynak Öztürk, Ayşe Bilge Tülü, Bilge Turhan Bal, Seçil Karakoca Nemli, Merve Bankoğlu Güngör   +5 more
doaj   +1 more source

Fatigue Performance and Failure Loads of Composition‐Gradient Multilayer Zirconia: Partial‐Coverage Restorations Versus Single Crowns at Different Thicknesses

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This study investigated the influence of restoration type (partial‐coverage versus crown) and ceramic‐layer thickness on the fatigue behavior and failure load of monolithic composition‐gradient multilayer zirconia (4Y‐PSZ/5Y‐PSZ) molar restorations. Material and Methods Seventy‐two CAD/CAM‐fabricated monolithic zirconia restorations (
F. A. Spitznagel, A. Marksteiner, L. S. Prott, Y. Zhang, M. B. Blatz, L. M. M. Alves, T. M. B. Campos, P. C. Gierthmuehlen   +7 more
wiley   +1 more source

Evaluation of Extra-High Translucent Dental Zirconia: Translucency, Crystalline Phase, Mechanical Properties, and Microstructures

Journal of Functional Biomaterials
Highly translucent zirconia (TZ) is frequently used in dentistry. The properties of several highly translucent zirconia materials available in the market require an in-depth understanding.
Hiroto Nakai, Masanao Inokoshi, Hengyi Liu, Motohiro Uo, Manabu Kanazawa   +4 more
doaj   +1 more source

Free energy and molecular dynamics calculations for the cubic-tetragonal phase transition in zirconia [PDF]

, 2001
Stefano Fabris, A. T. Paxton, Michael W. Finnis   +2 more
openalex   +1 more source

Translucency of 3D‐Printed 3Y‐ and 5Y‐Doped Zirconia

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To evaluate and compare the translucency of 3D‐printed zirconia materials: 3Y tetragonal zirconia polycrystal (3Y‐TZP) and 5Y partially stabilized zirconia (5Y‐PSZ). Material and Methods 3D‐printed 5Y‐PSZ and 3Y‐TZP materials fabricated using digital light processing (DLP) were investigated.
Sebastian Hetzler, Clemens Schmitt, Peter Rammelsberg, Stefan Rues, Andreas Zenthöfer   +4 more
wiley   +1 more source

Effect of Occlusal Adjustment and Subsequent Repolishing on the Translucency Parameter, Contact Angle, and Flexural Strength of Different Types of Glazed Monolithic Zirconia

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives This study evaluated the effects of material and surface condition (glazed vs. polished after simulated occlusal adjustment) on translucency parameter, contact angle, and flexural strength of four monolithic zirconia. Materials and Methods Disk‐shaped specimens (n = 80, Ø12 × 1 mm) were fabricated from four monolithic zirconia ...
Kelli Nunes Monteiro, Rafaela Paschoalin Nigro, Stéphanie Soares Favero, Ranulfo Benedito de Paula Miranda, Estevam Augusto Bonfante, Paulo Francisco Cesar   +5 more
wiley   +1 more source

Dental zirconia generations: a comparative study of translucency parameters and light transmittance across varying thicknesses

Brazilian Dental Science
Objective: This in vitro study evaluated the translucency and polymerization light transmission of zirconia discs, produced from different generations of dental zirconia materials and with a consideration of varying thicknesses.
Ra'fat Farah
doaj   +1 more source