Practical Aspects of Carbon Content Determination in Carburized Steels by EPMA

2006 ◽  
Vol 12 (4) ◽  
pp. 331-334 ◽  
Author(s):  
Florence Robaut ◽  
Alexandre Crisci ◽  
Madeleine Durand-Charre ◽  
Danielle Jouanne
Keyword(s):  
Solid Solution ◽  
Calibration Curve ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Analytical Procedure ◽  
Metallographic Study ◽  
X Ray ◽  
Content Determination ◽  
Standard Specimens ◽  
Curve Method

The carbon contents in carburized steels were investigated by electron probe microanalysis (EPMA) for a range of carbon levels in the solid solution less than 1 wt%. This article describes the difficulties encountered with the classic analytical procedure using the k ratio of X-ray intensities and the φ(ρz) model. Here, a suitable calibration curve method is presented with emphasis on the metallographic study of standard specimens and on the carbon decontamination of samples.

scholarly journals Measurement of PuO2 film thickness by electron probe microanalysis (EPMA) calibration curve method

2020 ◽  
Vol 530 ◽  
pp. 151968 ◽  
Author(s):  
J.A. Stanford ◽  
N. Teslich ◽  
S. Donald ◽  
C.K. Saw ◽  
R. Gollott ◽  
...  
Keyword(s):  
Film Thickness ◽  
Calibration Curve ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Curve Method

Electron microprobe study of turquoise-group solid solutions in the Neyshabour and Meydook mines, northeast and southern Iran

2020 ◽  
Vol 58 (1) ◽  
pp. 71-83
Author(s):  
Elahe Mansouri Gandomani ◽  
Nematollah Rashidnejad-Omran ◽  
Amir Emamjomeh ◽  
Pietro Vignola ◽  
Tahereh Hashemzadeh
Keyword(s):  
Solid Solution ◽  
Solid Solutions ◽  
Electron Microprobe ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Major Elements ◽  
Point Of View ◽  
Chemical Compositions ◽  
Light Blue ◽  
Quaternary Solid Solution

ABSTRACT Turquoise, CuAl6(PO4)4(OH)8·4H2O, belongs to the turquoise group, which consists of turquoise, chalcosiderite, aheylite, faustite, planerite, and UM1981-32-PO:FeH. In order to study turquoise-group solid solutions in samples from the Neyshabour and Meydook mines, 17 samples were selected and investigated using electron probe microanalysis. In addition, their major elements were compared in order to evaluate the feasibility of distinguishing the provenance of Persian turquoises. The electron microprobe data show that the studied samples are not constituted of pure turquoise (or any other pure endmember) and belong, from the chemical point of view, to turquoise-group solid solutions. In a turquoise–planerite–chalcosiderite–unknown mineral quaternary solid solution diagram, the chemical compositions of the analyzed samples lie along the turquoise–planerite line with minor involvement of chalcosiderite and the unknown mineral. Among light blue samples with varying hues and saturations from both studied areas, planerite is more abundant among samples from Meydook compared with samples from Neyshabour. Nevertheless, not all the light blue samples are planerite. This study demonstrates that distinguishing the deposit of origin for isochromatic blue and green turquoises, based on electron probe microanalysis method and constitutive major elements, is not possible.

scholarly journals Early X-ray Mapping in Electron Probe Microanalysis

2006 ◽  
Vol 12 (S02) ◽  
pp. 1376-1377
Author(s):  
P Duncumb
Keyword(s):  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
X Ray

Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2005

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