Results 11 to 20 of about 858,236 (306)

Zirconium Doped Tunnel Structure Manganese Oxide OMS-2 Catalysts [PDF]

open access: yesEurasian Chemico-Technological Journal, 2004
Zirconium doped tunnel structure manganese oxide (OMS-2) materials were synthesized by reflux and impregnation methods by adopting suitable synthetic conditions.
Rajabathar Jothiramalingam   +2 more
doaj   +3 more sources

OXIDATION OF ZIRCONIUM AND ZIRCONIUM ALLOYS [PDF]

open access: yesJournal of The Electrochemical Society, 1959
Zirconium oxidation was investigaied in the temperature range 400 io 900 deg C at oxygen pressures of 50, 200, and 800 mm. The reaction rate of massive (parallelepiped) samples was best expressed by the cubic rate law. At an oxygen pressure of 200 mm the activation energy was calculated to be 42.7 kcal per mole, and the cubic rate constant in ( mu g ...
Porte, H.A.   +3 more
openaire   +3 more sources

Comparative Evaluation of Flexural Strength of Heat Polymerised Polymethyl Methacrylate Provisional Fixed Restorative Resin Reinforced with Different Percentages of Silanised Zirconium Oxide Nanoparticles: An In-vitro Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2023
Introduction: The purpose of providing a provisional restoration includes immediate replacement of missing teeth, for protection of pulp and maintenance of periodontal health, to maintain occlusal stability, to preserve the position of the teeth and for ...
Priya Gupta   +2 more
doaj   +1 more source

An Amorphous Phase Precedes Crystallization: Unraveling the Colloidal Synthesis of Zirconium Oxide Nanocrystals. [PDF]

open access: yesACS Nano, 2023
One can nowadays readily generate monodisperse colloidal nanocrystals, but the underlying mechanism of nucleation and growth is still a matter of intense debate.
Pokratath R   +13 more
europepmc   +4 more sources

Raw glass-ceramics glazes from SiO2–Al2O3–CaO–MgO–Na2O–K2O system modified by ZrO2 addition – Changes of structure, microstructure and surface properties

open access: yesOpen Ceramics, 2021
In this paper, raw glazes from the SiO2–Al2O3–CaO–MgO–K2O–Na2O system were examined. Zirconium oxide, in five different amounts – 1.5, 3, 6, 12 and 24 wt%, was added to the chosen system and heat treated at 1230 °C, where they were kept for an hour.
Katarzyna Pasiut   +4 more
doaj   +1 more source

Soot Oxidation in Diesel Exhaust on Silver Catalyst Supported by Alumina, Titanium and Zirconium [PDF]

open access: yesE3S Web of Conferences, 2021
Diesel Particulate Filter (DPF) is used to limit the emission of particulate matter (PM). The operation of DPF has two consecutive functions which are filtration of PM and regeneration. Performance of DPF is reduced by clogging of the filter.
Promhuad Punya, Sawatmongkhon Boonlue
doaj   +1 more source

Compressive Strength of Alginate Impression Material Incorporated with Silver and Zirconium Oxide Nanoparticles [PDF]

open access: yesAl-Rafidain Dental Journal, 2023
Aims: To investigate the effect of adding nanoparticles on the compressive strength of alginate impression material. Materials and Methods: In this study, two types of nanoparticles were added to alginate impression materials: silver and zirconium oxide ...
Luma Mudhafar Al-Nema, Ahmed Asim Al-Ali
doaj   +1 more source

The Effect of Adding Zirconium Oxide Nanoparticles on Fracture Strength of Heat Cured Acrylic Resin

open access: yesمجله دانشکده دندانپزشکی اصفهان, 2023
Zirconium oxide nanoparticles have high strength and transparency to light and have been used in dentistry in dental restorations, production of high glass fillers, and improving the material's resistance to mechanical impact. The aim of this
Abolfazl Vakili Zarch   +3 more
doaj   +1 more source

Zirconium oxidation on the atomic scale [PDF]

open access: yesUltramicroscopy, 2009
Zirconium alloys are used in the nuclear industry as fuel rod cladding. They are chosen for this role because of their good mechanical properties and low thermal neutron absorption. Oxidation of these alloys by coolant is one of the chief limiting factors of the fuel burn-up efficiency.
Hudson, D, Cerezo, A, Smith, G
openaire   +3 more sources

The Effect of SrO Addition on the Recrystallization of ZrSiO4 in Raw Glass–Ceramic Glazes from the SiO2-Al2O3-CaO-MgO-K2O-ZrO2 System

open access: yesCrystals, 2023
The aim of this experiment was to determine the effect of the addition of strontium oxide on the recrystallization of zirconium silicate when adding strontium oxide to the glaze composition.
Janusz Partyka   +2 more
doaj   +1 more source

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