Results 51 to 60 of about 39,827 (264)

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

Design of a Cobalt‐Free Maraging Steel with Ultra‐High Strength of 2.3 GPa Through Additive Manufacturing

open access: yesAdvanced Science, EarlyView.
A computationally designed, cobalt‐free maraging steel tailored for additive manufacturing achieves an ultra‐high tensile strength of 2.3 GPa with 5.7% elongation. This exceptional strength‐ductility synergy stems from high‐density core‐shell Ni3Ti/NiAl nanoprecipitates, a crack‐resistant composition, and a fine equiaxed grain structure enabled by ...
Hu Li   +6 more
wiley   +1 more source

Stabilization of the Benzene Radical Trianion in an Inverse‐Sandwich Yttrium Complex

open access: yesAngewandte Chemie, EarlyView.
A new type of benzene anion state is born: The unprecedented benzene radical trianion embedded in an inverse‐sandwich yttrium complex was synthesized by a one‐electron chemical reduction of its benzene dianion precursor using potassium graphite in the presence of [2.2.2]‐cryptand.
Weiqing Mao   +5 more
wiley   +2 more sources

Synthesis of nanoparticles of Y(OH)CO3 and Y2O3 using liquid interfaces and modification of their surface by palladium

open access: yesТонкие химические технологии, 2011
The nano-composite materials with different morphology and structure, including yttrium basic carbonate or yttrium oxide and palladium metal are obtained. The optimal conditions for synthesis of stable nanoparticles of yttrium basic carbonate are defined.
E. A. Mischihina   +6 more
doaj  

Atomic‐Scale Insights into Yttrium‐Induced Grain Boundary Structure Modification in Al2O3

open access: yesAdvanced Science, EarlyView.
Using advanced STEM characterization combined with NNP‐based MCMD calculations, it is revealed that Y segregation at ∑13 Al2O3 GB involves not only simple substitution of Y for Al atoms but also structural adaptation with a change in GB atomic density, leading to minimized excess volume and lowest GB energy.
Jingyuan Yan   +7 more
wiley   +1 more source

Kinetics of yttrium dissolution from waste ceramic dust / Кинетика растворения иттрия из отходной керамической пыли / Kinetika rastvaranja itrijuma iz otpadnog keramičkog praha

open access: yesVojnotehnički Glasnik, 2016
Yttrium is a silvery transition metal and has similar chemical properties to lanthanoids. Because of this similarity, yttrium belongs to rare earth elements.
Srećko R. Stopić, Bernd G. Friedrich
doaj   +1 more source

Yttrium Oxide Nanoparticle Synthesis: An Overview of Methods of Preparation and Biomedical Applications

open access: yesApplied Sciences, 2021
Metal oxide nanoparticles demonstrate uniqueness in various technical applications due to their suitable physiochemical properties. In particular, yttrium oxide (Y2O3) nanoparticle is familiar for technical applications because of its higher dielectric ...
Govindasamy Rajakumar   +11 more
doaj   +1 more source

Beneficial Effect of Pt and of Pre-Oxidation on the Oxidation Behaviour of an NiCoCrAlYTa Bond-Coating for Thermal Barrier Coating Systems [PDF]

open access: yes, 2011
The oxidation behaviour of a thermal barrier coating (TBC) system is a major concern as the growth of the thermally grown oxide (TGO) layer on the bondcoating creates stresses that greatly favour the thermal barrier spallation.
Monceau, Daniel   +4 more
core   +3 more sources

Atomic‐Scale Mechanisms of Multi‐Resistance States in HfOx‐Based RRAM: Evolution of Atomic Electric Fields and Oxygen Vacancies

open access: yesAdvanced Science, EarlyView.
Atomic‐scale mechanisms governing multilevel resistive switching in HfOx‐based RRAM are reveal through advanced TEM. Thermally driven m‐phase rotation ([101]↔[011]) enables selective oxygen vacancy migration, which reconstructs atomic electric fields and dictates conduction—from Schottky/Poole‐Frenkel emission to Ohmic transport.
Wen Sun   +9 more
wiley   +1 more source

Influence Ytrio Percentage On Monolithic Zirconia Properties: Literature Review

open access: yesRevista Naval de Odontologia On Line, 2022
The main disadvantage of conventional zirconia is its high opacity. Depending on different conditions, especially the content of the yttrium stabilizer, it is possible to circumvent this issue, in view of this, several generations of yttrium stabilized ...
Brenda Barros Magalhães Motta   +3 more
doaj   +1 more source

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