Results 21 to 30 of about 84,691 (149)

Oxidation Behavior of Maraging 300 Alloy Exposed to Nitrogen/Water Vapor Atmosphere at 500 °C

open access: yesMetals, 2021
Aging heat treatments in maraging steels are fundamental to achieve the excellent mechanical properties required in several industries, i.e., nuclear, automotive, etc. In this research, samples of maraging 300 alloy were aged using a novel procedure that
Mauro Andres Cerra Florez   +7 more
doaj   +1 more source

The formation of boundary clinopyroxenes and associated glass veins in type B1 CAIs [PDF]

open access: yes, 2009
We used focused ion beam thin section preparation and scanning transmission electron microscopy (FIB/STEM) to examine the interfacial region between spinel and host melilite for spinel grains in type B1 inclusions from the Allende and Leoville ...
Abreu   +83 more
core   +1 more source

Fluidization behavior of redox metal oxide and spinel particles to develop high-energy-density thermal energy storage system for concentrated solar power applications

open access: yesJournal of Thermal Science and Technology, 2022
Solar thermochemical energy storage systems, utilize the entire spectrum of solar radiation to drive endothermic chemical reactions, have received great interest in concentrated solar power applications during the past years.
Genta TSURUMAKI   +8 more
doaj   +1 more source

First-principles study of possible shallow donors in ZnAl2O4 spinel [PDF]

open access: yes, 2013
ZnAl2O4 (gahnite) is a ceramic which is considered a possible transparent conducting oxide (TCO) due to its wide band gap and transparency for UV. Defects play an important role in controlling the conductivity of a TCO material along with the dopant ...
Cottenier, Stefaan   +5 more
core   +1 more source

Synthesis of Spinel-Hydroxyapatite Composite Utilizing Bovine Bone and Beverage Can

open access: yesCrystals, 2022
Spinel-based hydroxyapatite composite (SHC) has been synthesized utilizing bovine bones as the source of the hydroxyapatite (HAp) and beverage cans as the aluminum (Al) source.
Agus Pramono   +3 more
doaj   +1 more source

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]

open access: yes, 2010
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V.   +4 more
core   +1 more source

Novel Nanosized Spinel MnCoFeO4 for Low-Temperature Hydrocarbon Oxidation

open access: yesNanomaterials, 2022
The present paper reports on MnCoFeO4 spinels with peculiar composition and their catalytic behavior in the reactions of complete oxidation of hydrocarbons. The samples were synthesized by solution combustion method with sucrose and citric acid as fuels.
Vencislav Tumbalev   +6 more
doaj   +1 more source

Exchange biasing of single-domain Ni nanoparticles spontaneously grown in an antiferromagnetic MnO matrix [PDF]

open access: yes, 2007
Exchange biased composites of ferromagnetic single-domain Ni nanoparticles embedded within large grains of MnO have been prepared by reduction of Ni$_x$Mn$_{1-x}$O$_4$ phases in flowing hydrogen.
Abramoff M D   +7 more
core   +1 more source

On stoichiometry and intermixing at the spinel/perovskite interface in CoFe2O4/BaTiO3 thin films [PDF]

open access: yes, 2014
The performance of complex oxide heterostructures depends primarily on the interfacial coupling of the two component structures. This interface character inherently varies with the synthesis method and conditions used since even small composition ...
Alford, NM   +5 more
core   +1 more source

Cordierite-spinel-quartz assemblages: A potential geobarometer [PDF]

open access: yesBulletin of the Geological Society of Finland, 1986
The composition of (Mg-Zn-Fe+2)-aluminate-spinel coexisting with cordierite and quartz is potentially a sensitive geobarometer in rock types such as cordierite ‒ anthophyllite rocks which are not well suited to most other geobarometers.
F. Seifert, J.C. Schumacher
doaj   +1 more source

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