Results 11 to 20 of about 34,112 (314)

High count rate electron probe microanalysis

open access: bronzeJournal of Research of the National Institute of Standards and Technology, 2002
Reducing the measurement uncertainty of quantitative analyses made using electron probe microanalyzers (EPMA) requires a careful study of the individual uncertainties from each definable step of the measurement. Those steps include measuring the incident electron beam current and voltage, knowing the angle between the electron beam and the sample ...
Geller, Joseph D., Herrington, Charles
openaire   +3 more sources

Determination of zeolite-group mineral compositions by electron probe microanalysis [PDF]

open access: hybrid, 2016
A new protocol for the quantitative determination of zeolite-group mineral compositions by electron probe microanalysis (wavelength-dispersive spectrometry) under ambient conditions, is presented. The method overcomes the most serious challenges for this
Campbell, L.S.   +8 more
core   +4 more sources

High-precision measurement of trace-level Nb, Sn, Ta, and W in rutile using electron probe microanalysis

open access: diamondSolid Earth Sciences
The composition of Nb, Sn, Ta, and W in rutile can serve as a highly sensitive indicator for the mineralization of these elements. This information could also be utilized to discriminate different stages of ore deposition or distinct types of deposits ...
Peng-Li He, Xiao-Long Huang, Le Zhang
doaj   +2 more sources

Characterization of Individual Atmospheric Aerosols Using Quantitative Energy Dispersive-Electron Probe X-ray Microanalysis: A Review [PDF]

open access: diamondAsian Journal of Atmospheric Environment, 2010
Great concerns about atmospheric aerosols are attributed to their multiple roles to atmospheric processes. For example, atmospheric aerosols influence global climate, directly by scattering or absorbing solar radiations and indirectly by serving as cloud
HyeKyeong Kim, Chul-Un Ro
doaj   +2 more sources

Fracture analysis of the circulating pump bolts [PDF]

open access: yesE3S Web of Conferences, 2020
The microstructure, micrograph of the fracture sections and the alloy elements distribution of the fractured flange-connecting bolts of 3# circulating pump in a power plant were analyzed by the scanning electron microscopy, the optical microscopy and the
Jiang Chengjun   +3 more
doaj   +1 more source

Features of formation of composite ceramics from SiC-Si-Mo at high pressure [PDF]

open access: yesScience of Sintering, 2009
SiC-based composite ceramics were investigated by X-ray diffraction, electron microscopy and electron-probe X-ray microanalysis. It is established that, depending on the composition of the initial powder mixtures, at T = 1500-1800°C and P = 4 GPa ...
Vlasova M.   +4 more
doaj   +1 more source

Phase Equilibria in the Ni-V-Ta Ternary System

open access: yesMetals, 2018
Two isothermal sections of the Ni-V-Ta ternary system at 1200 °C and 1000 °C have been experimentally established using X-ray diffraction, electron probe microanalysis, energy dispersive spectroscopy, and differential scanning calorimeter with ...
Cuiping Wang   +7 more
doaj   +1 more source

Inter-laboratory comparison of a WDS-EDS quantitative X-ray microanalysis of a metallic glass [PDF]

open access: yes, 2014
We conducted an inter-laboratory study of a metallic glass whose main component is nickel. Two determinations of the mass fractions of the different elements present within the sample were asked to the participants: one at an acceleration voltage of 15 ...
Brisset, François   +4 more
core   +5 more sources

Interfacial analysis of porcelain fused to high-palladium alloy with different observation methods

open access: yesJournal of Dental Sciences, 2016
Background/purpose: In a previous fractural study of implant-supported crowns, it was found that the palladium−silver crowns possessed the highest fracture force.
Hao-Sheng Chang   +3 more
doaj   +1 more source

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