Stress measurement in alumina scales on high temperature alloys using X-ray stress evaluation and laser Raman spectroscopy

1996 ◽  
Vol 355 (5-6) ◽  
pp. 745-747
Author(s):  
V. R. Vosberg ◽  
W. Fischer ◽  
M. G. Berger ◽  
D. Clemens ◽  
W. J. Quadakkers ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
High Temperature ◽  
Stress Measurement ◽  
Laser Raman Spectroscopy ◽  
Alumina Scales ◽  
Stress Evaluation ◽  
X Ray ◽  
Laser Raman ◽  
High Temperature Alloys

scholarly journals Characterization of Metal/Carbon Multilayers by Raman Spectroscopy

1989 ◽  
Vol 160 ◽  
Author(s):  
David D. Allred ◽  
Qi Wang ◽  
Jesus Gonzalez-Hernandez
Keyword(s):  
Raman Spectroscopy ◽  
Amorphous Semiconductor ◽  
Laser Raman Spectroscopy ◽  
Plasma Confinement ◽  
Ray Optics ◽  
X Ray ◽  
Laser Raman ◽  
Line Shapes ◽  
Two Peaks

AbstractLaser Raman spectroscopy has been found to be useful for characterizing amorphous semiconductor multilayers, especially the interfaces of multilayers. Recently, we have extended this technique to the characterization of magnetron sputtered multilayers commonly used as reflectors in soft x-ray optics. Unlike the multilayers previously studied which contained only semiconductors and dielectrics, these are generally semiconductor/metal multilayers. We report here on the Raman characterization of the most common class of multilayers used in soft x-ray optics, those that contain a high density metal like tungsten interspersed with layers of carbon. In all of the metal/carbon multilayers the dominate feature in the Raman spectra is due to a-C. The a-C spectra consists of a broad peak at about 1560 cm-1 (G-peak) and a shoulder at about 1400 cm-1 (D-peak). This can be deconvoluted with Gaussian line shapes to yield two peaks (one at about 1560 to 1570 cm-1 and the other at about 1380 to 1420 cm-1). Among the W/C multilayer samples peak positions and relative magnitudes changed little with carbon thickness over the range of 1 to 12 nm. Significant differences are, however, seen as the identity of the metal component is altered or, especially, as the preparations are varied. For example, the intensity ratio of the D-peak to G-peak was much larger for multilayer samples prepared under conditions of good plasma confinement.

Photo- and Thermo-Chromic Study of the Ethylenediamine Trimolybdate

2008 ◽  
Vol 47-50 ◽  
pp. 1193-1196
Author(s):  
De Hui Sun ◽  
Hong Jie Zhang ◽  
Ji Lin Zhang ◽  
Jiang Bo Yu
Keyword(s):  
Crystal Structure ◽  
Raman Spectroscopy ◽  
Fourier Transform ◽  
Powder Diffraction ◽  
Color Difference ◽  
Laser Raman Spectroscopy ◽  
X Ray ◽  
Laser Raman ◽  
Thermochromic Properties ◽  
The Difference

The ethylenediamine trimolybdate (ENTMo) can show unusually photochromic and thermochromic properties and there exists in the difference of chromic mechanisms, which has been proved in our previous work [1]. In this paper, X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) and laser Raman spectroscopy (LRS) of the colored samples are characterized and analyzed in detail. The crystal structure, the inorganic skeleton and the microenvironment of center ions of the colored samples do not substantively change except distortion. The color difference of the photochromic and the thermochromic samples is discussed and that the difference of reduction sites result in their different chromic mechanisms is suggested.

scholarly journals Stress Evaluation of Si Single Crystal with Laser Raman Spectroscopy.

1999 ◽  
Vol 65 (638) ◽  
pp. 2157-2162 ◽  
Author(s):  
Tomo IKEBE ◽  
Yasushi NIITSU ◽  
Eiichi SUZUKI ◽  
Teruki IKEDA ◽  
Yusei OHKUBO
Keyword(s):  
Raman Spectroscopy ◽  
Single Crystal ◽  
Laser Raman Spectroscopy ◽  
Stress Evaluation ◽  
Laser Raman

X-ray powder diffraction data for a new compound (NH4)H2Co2O(OH)(MoO4)1.6(WO4)0.4•H2O type ϕy

2018 ◽  
Vol 33 (4) ◽  
pp. 315-318 ◽  
Author(s):  
Adriana Echavarría ◽  
Sandra L. Amaya
Keyword(s):  
Raman Spectroscopy ◽  
Lamellar Structure ◽  
Laser Raman Spectroscopy ◽  
Powder Diffraction Data ◽  
X Ray Diffraction ◽  
Hexagonal Symmetry ◽  
X Ray ◽  
Laser Raman ◽  
Ir Laser ◽  
Ft Ir

A new trimetallic compound with formula (NH4)H2Co2O(OH)(MoO4)1.6(WO4)0.4•H2O and lamellar structure was prepared by hydrothermal synthesis. The solid was characterized using X-ray diffraction (XRD), thermogravimetric (TGA) and differential thermal (DTA) analyses, Fourier-transform infrared spectroscopy (FT–IR), laser Raman spectroscopy (LRS), and atomic absorption spectroscopy (AA). Crystallographic studies showed that the solid crystallizes with hexagonal symmetry in space group R-3 m with a = 6.0807 and c = 21.7591 Å.

Stresses in alumina scales on high-temperature alloys measured by X-ray and optical methods

1997 ◽  
Vol 358 (1-2) ◽  
pp. 127-130 ◽  
Author(s):  
V. R. Vosberg ◽  
D. Clemens ◽  
M. G. Berger ◽  
W. J. Quadakkers ◽  
W. Fischer ◽  
...  
Keyword(s):  
High Temperature ◽  
Optical Methods ◽  
Alumina Scales ◽  
X Ray ◽  
High Temperature Alloys

High‐temperature and ‐pressure system for laser Raman spectroscopy of aqueous solutions

1988 ◽  
Vol 59 (10) ◽  
pp. 2247-2253 ◽  
Author(s):  
N. A. Marley ◽  
M. Ott ◽  
B. L. Fearey ◽  
T. M. Benjamin ◽  
P. S. Z. Rogers ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
High Temperature ◽  
Aqueous Solutions ◽  
Laser Raman Spectroscopy ◽  
Pressure System ◽  
Laser Raman ◽  
High Temperature And Pressure ◽  
Temperature And Pressure
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