Results 151 to 160 of about 43,392 (192)
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Vacuum Welding of Olivine

Science, 1966
Welding of olivine was demonstrated by grinding it in a ball mill in an atmosphere of about 2 × 10 -7 torr. Most of the sample adhered strongly to the container and grinding balls although adhesion in air is only slight.
openaire   +3 more sources

Cracking the olivine zoning code: Distinguishing between crystal growth and diffusion

, 2015
Olivine composition and zoning patterns are widely used to reconstruct the evolution of mafic magmas from source to surface and to extract time scales of magmatic processes.
T. Shea, K. Lynn, Michael O. Garcia
semanticscholar   +1 more source

Diffusion of phosphorus in olivine and molten basalt

, 2015
The diffusivity of phosphorus in San Carlos olivine (SCO) was measured at near-atmospheric pressure and 650-850 °C by in-diffusion of P from a surface powder source consisting of pre-reacted SCO and AlPO4.
experiments were conducted in generally Ni-NiO but also   +2 more
semanticscholar   +1 more source

Olivine and Climate Change

2012
The greenhouse effect, thanks mainly to the water vapor in our atmosphere, has created a livable climate on Earth. Climate change, however, may potentially have dire consequences. It is generally assumed that the rise in CO2 levels in the atmosphere is the main culprit, although several other greenhouse gases (GHG) also play a role.
openaire   +3 more sources

Olivine-Based Cathode Materials

2015
The lithium insertion compounds built with polyanionic groups such as (SO4)2−,(PO4)3−, (P2O7)4−, (MoO4)2− or (WO4)2− are considered as potential positiveelectrode materials for use in lithium rechargeable batteries [1, 2]. Yet in thisfamily, olivine phosphate and Nasicon-like frameworks are currently the subject ofmany investigations.
Karim, Zaghib   +2 more
openaire   +3 more sources

Olivine: a monitor of magma evolutionary paths in kimberlites and olivine melilitites

Contributions to Mineralogy and Petrology, 1988
Petrographic and chemical criteria indicate that the overwhelming majority of olivines in kimberlites are probably cognate phenocrysts. The implied low volume of xenocryst olivines requires that primitive kimberlite magmas are highly ultrabasic liquids. Two chemically distinctive olivine populations are present in all of the kimberlites studied.
openaire   +2 more sources

Chemical and morphological changes during olivine carbonation for CO2 storage in the presence of NaCl and NaHCO3.

Physical Chemistry, Chemical Physics - PCCP, 2014
The increasing concentrations of CO2 in the atmosphere are attributed to the rising consumption of fossil fuels for energy generation around the world. One of the most stable and environmentally benign methods of reducing atmospheric CO2 is by storing it
G. Gadikota   +3 more
semanticscholar   +1 more source

Olivine recrystallization textures [PDF]

open access: possibleMineralogical Magazine, 1969
SummaryMosaic olivine textures, with straight triple grain boundaries meeting at angles of 120°, are common in dunites. This is a well-known feature of annealed metals, and is the result of grain-boundary migration during recrystallization in which the system tends toward a state of minimum interfacial energies.
openaire   +1 more source

Comparison of electrochemical performances of olivine NaFePO4 in sodium-ion batteries and olivine LiFePO4 in lithium-ion batteries.

Nanoscale, 2013
Carbon-coated olivine NaFePO(4) (C-NaFePO(4)) spherical particles with a uniform diameter of ∼80 nm are obtained by chemical delithiation and subsequent electrochemical sodiation of carbon-coated olivine LiFePO(4) (C-LiFePO(4)), which is synthesized by a
Yujie Zhu   +4 more
semanticscholar   +1 more source

Atomic-Scale Investigation of Defects, Dopants, and Lithium Transport in the LiFePO4 Olivine-Type Battery Material

, 2005
Key issues relating to intrinsic defects, dopant incorporation, and lithium ion migration in the LiFePO4 electrode material have been investigated using well-established atomistic modeling techniques.
M. Islam   +3 more
semanticscholar   +1 more source

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