Results 11 to 20 of about 39,958 (136)

Characterization of Grain Boundaries in Superplastically Deformed Y-TZP Ceramics [PDF]

open access: yes, 1994
The effects of compressive deformation on the grain boundary characteristics of fine-grained Y-TZP have been investigated using surface spectroscopy, impedance analysis, and transmission electron microscopy.
Boutz, M.M.R.   +6 more
core   +20 more sources

Surface oxide on thin films of yttrium hydride studied by neutron reflectometry [PDF]

open access: yes, 2012
The applicability of standard methods for compositional analysis is limited for H-containing films. Neutron reflectometry is a powerful, non-destructive method that is especially suitable for these systems due to the large negative scattering length of H.
Cousin, Fabrice   +5 more
core   +2 more sources

Evaluation of the Yttrium Oxide Effect on Some Mechanical Properties of (Type III) Dental Stone

open access: yesJournal of Techniques, 2023
For many years, gypsum compounds have been used in dentistry. They're used to make casts for various dental laboratory operations. Gypsum products have important characteristics such as "quality, abrasion resistance, compressive strength, hardness ...
Najwah Yousuf Hameed   +2 more
doaj   +1 more source

Reactions of alkaline earth zirconate refractories with titanium alloys [PDF]

open access: yesMATEC Web of Conferences, 2020
The severe reactivity of titanium alloys with ceramics is a major challenge for their processing. Up to now refractories to melt and cast titanium alloys are selected on the basis of a low Gibbs energy of formation. This kind of selection assumes that an
Schafföner Stefan
doaj   +1 more source

The effect of yttrium ion implantation on the sulphidation of incoloy 800H [PDF]

open access: yes, 1986
Previous work has shown the beneficial effect of yttrium implantation on the oxidation behaviour of chromium oxide forming alloys. Because of the limited applicability of Fe-Cr-Ni alloys in sulphur containing gases the effect of yttrium implantation on ...
Fransen, T., Gellings, P.J., Kort, J.H.
core   +3 more sources

Impact of magnesium oxide concentration and yttrium-aluminum garnet stoichiometry deviation on the microstructure and optical transmission of YAG-based ceramics [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2021
The paper investigates the effect of the magnesium oxide concentration on the ceramics’ microstructure and optical transmittance under conditions of excess Al3+ (4.8 mol.%) and Y3+ (2.9 mol.%) cations in the garnet structure, as well as the ...
Fedor F. Malyavin   +8 more
doaj   +1 more source

Transparent yttrium hydride thin films prepared by reactive sputtering [PDF]

open access: yes, 2011
Metal hydrides have earlier been suggested for utilization in solar cells. With this as a motivation we have prepared thin films of yttrium hydride by reactive magnetron sputter deposition.
Hauback, B. C.   +5 more
core   +2 more sources

Influence of the Ti-TiN-(Y,Ti,Al)N Nanolayer Coating Deposition Process Parameters on Cutting Tool Oxidative Wear during Steel Turning

open access: yesNanomaterials, 2023
Ti-TiN-(Y,Ti,Al)N coatings with a three-layer architecture (adhesive Ti layer, transition TiN layer, and wear-resistant (Y,Ti,Al)N layer) were studied. When depositing coatings, three arc current values of the yttrium cathode were used: 65, 85, and 105 A.
Alexey Vereschaka   +7 more
doaj   +1 more source

Effect of adding yttrium on precipitation behaviors of inclusions in E690 ultra high strength offshore platform steel

open access: yesHigh Temperature Materials and Processes, 2020
The mechanism of inclusions precipitation of the E690 offshore platform steel, with and without addition of yttrium, was studied using the thermodynamic calculation method.
Xi Xiaojun   +4 more
doaj   +1 more source

Gold Nanoparticles on Yttrium Modified Titania: Support Properties and Catalytic Activity [PDF]

open access: yes, 2011
A series of titanium oxide catalysts modified with yttrium has been prepared by sol¿gel method and their structural properties have been studied. The incorporation of yttrium in the titania lattice favors the formation of oxygen vacancies while at low Y ...
Centeno Gallego, Miguel Ángel   +7 more
core   +1 more source

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