Results 51 to 60 of about 78,079 (295)

Comparative study of physical properties of zirconia based dental ceramics [PDF]

open access: yes, 2009
The aim of this project was to evaluate and compare the mechanical properties of commercial yttria partially stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics, which have generated interest in restorative dentistry because of their high ...
Pittayachawan, P, Pittayachawan, P.
core  

Study and development of thin films of shape memory ceramics and superelastic zirconia

open access: yes, 2023
reservedShape memory ceramic materials, including zirconia, are a unique class of materials that possess the ability to "remember" their original shape and return to it after being deformed by an external force.
CANTON, LORENZO
core  

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

open access: yesAdvanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn   +5 more
wiley   +1 more source

Wear of enamel antagonist to gradient zirconia vs full strength monolithic zirconia: a randomized clinical trial

open access: yesBMC Oral Health
Background Monolithic zirconia restorations have emerged as a viable alternative to veneered zirconia restorations, eliminating the risk of veneer chipping due to their superior strength, fracture resistance, and aesthetics.
Sara Ismail Mohamed Hussein   +2 more
doaj   +1 more source

Preparation of inverse opal zirconia [PDF]

open access: yesScience of Sintering, 2018
Inverse opal zirconia is useful in many ways because of their ability to combine several chemical and physical properties. In this research, polystyrene template was fabricated by self-assembly method and inverse opal zirconia was prepared by ...
Li Xiao-Peng   +4 more
doaj   +1 more source

Feasibility and Limitations of the Advanced Replica Process for Bioactive Glasses

open access: yesAdvanced Engineering Materials, EarlyView.
Periodic 3D‐printed Kelvin‐cell templates enable a controlled advanced replica process for fabricating highly porous glass lattices. Across P45K9, 45S5, and 13–93, material‐dependent differences in coating, burnout, and shrinkage lead to distinct strut morphologies, while comparable final porosities of 83%–88% are retained.
Swantje Funk   +4 more
wiley   +1 more source

Comparison of the effect of monolithic and layered zirconia on natural teeth wear: An in vitro study

open access: yesThe Journal of Indian Prosthodontic Society, 2018
Aim: The aim of this study is to compare wear of the natural teeth against monolithic zirconia and layered zirconia with different surface finishing procedures such as unpolished unglazed, polished unglazed, and polished glazed.
Yamini Gundugollu   +5 more
doaj   +1 more source

Effect of Cu and CuP Additions on the Microstructure and Nanoindentation‐Based Fracture Behavior of CoNiAlSi Ferromagnetic Shape Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Cu and combined Cu–P microalloying refine the microstructure and enhance the nanoindentation‐derived fracture resistance of CoNiAlSi ferromagnetic shape memory alloys without suppressing the martensitic transformation. Comparative SEM, DSC, and nanoindentation results reveal that the CuP‐containing alloy provides the most balanced response, achieving ...
Mehmet Demir
wiley   +1 more source

Evaluating dental zirconia [PDF]

open access: yesDental Materials, 2019
To survey simple contact testing protocols for evaluating the mechanical integrity of zirconia dental ceramics. Specifically, to map vital material property variations and to quantify competing damage modes.Exploratory contact tests are conducted on layer structures representative of zirconia crowns on dentin.Sharp-tip micro- and nano-indentations were
Yu, Zhang, Brian R, Lawn
openaire   +2 more sources

Light‐Induced Field‐Tunneling Synapses in Solution‐Processed Van Der Waals Heterostructures for Scalable, Retina‐Inspired Optical Sensing

open access: yesAdvanced Functional Materials, EarlyView.
A scalable, solution‐processed WSe2/ZrO2‐x van der Waals heterostructure realizes a light‐induced field‐tunneling synapse (LIFTS) that activates exclusively under bright illumination, emulating the photopic adaptation of the human retina at the device level.
Kijeong Nam   +10 more
wiley   +1 more source

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