Results 31 to 40 of about 4,365 (205)

Crack Growth Tests in Air Plasma-Sprayed Yttria Coatings for Alumina Ceramic Matrix Composites

open access: yesCeramics, 2019
Yttria coatings for all-oxide combustor walls were tested for their crack-growth behavior. These environmental and thermal barrier Y2O3-coatings were processed by atmospheric plasma spraying (APS). The stiffness and strength were measured for as-received
Stefan Hackemann, Marion Bartsch
doaj   +1 more source

Yttria stabilized zirconia membrane stability in molten fluoride fluxes for low-carbon magnesium production by the SOM process [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2013
The Solid Oxide Membrane (SOM) process for magnesium production involves the direct electrolysis of magnesium oxide for energy efficient and low-carbon magnesium production.
Milshtein J.   +4 more
doaj   +1 more source

Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions

open access: yesScientific Reports, 2023
This in vitro study evaluated comprehensively the performances of zirconia brackets with varying yttria proportions in manufacturing advanced orthodontic brackets.
Changbum Park   +6 more
doaj   +1 more source

On Oxidation Resistance Mechanisms at 1273 K of Tungsten-Based Alloys Containing Chromium and Yttria

open access: yesMetals, 2018
Tungsten (W) is currently deemed the main candidate for the plasma-facing armor material of the first wall of future fusion reactors, such as DEMO. Advantages of W include a high melting point, high thermal conductivity, low tritium retention, and low ...
Felix Klein   +10 more
doaj   +1 more source

Effect of Y2O3 Nanoparticles on Corrosion Study of Spark Plasma Sintered Duplex and Ferritic Stainless Steel Samples by Linear Sweep Voltammetric Method [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
The microstructure and corrosion properties of spark plasma sintered yttria dispersed and yttria free duplex and ferritic stainless samples were studied. Spark plasma sintering (SPS) was carried out at 1000°C by applying 50 MPa pressure with holding time
R. Shashanka   +2 more
doaj   +1 more source

Cavitation-assisted decontamination of yttria from graphite of different densities

open access: yesUltrasonics Sonochemistry, 2021
Yttria coated graphite crucibles are widely used to handle molten refractory and radioactive metals like uranium and plutonium. However, the coated layer suffers damages like cracking and peeling off owing to thermal cycles.
S. Lahiri   +4 more
doaj   +1 more source

Microstructure and Wear Rate of Yttria Reinforced Aluminum – Silicon Matrix Composites [PDF]

open access: yesEngineering and Technology Journal, 2010
In this research, composite materials of hypereutectic aluminum – silicon as a matrix reinforced with different volume fractions (2%, 4%, 6%, 8%) of Yttria particles with grain size between (50 - 75 μm) are prepared. The composites are prepared by vortex
doaj   +1 more source

Thickness and yttria percentage influences the fracture resistance of laminate veneer zirconia restorations

open access: yesClinical and Experimental Dental Research, 2022
Objectives Mechanical properties are cardinal for the long‐term clinical success of laminate veneer restorations but the selection of new restorative materials should ideally be based on clinical evidence, therefore, in vitro testing of dental materials ...
Ali Dhahee Malallah, Nadia H. Hasan
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Damage and microstructure evolution of yttria particle reinforced tungsten plates under laser thermal shock

open access: yesFenmo yejin jishu
Yttria particle reinforced tungsten plates with different thickness reduction were prepared by powder metallurgy technology combined with rolling process.
REN Daya, ZAN Xiang
doaj   +1 more source

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