X-ray diffraction and electron microscopy investigation of porous Si1−xGex

1997 ◽  
Vol 297 (1-2) ◽  
pp. 233-236 ◽  
Author(s):  
D Buttard ◽  
M Schoisswohl ◽  
J.L Cantin ◽  
H.J von Bardeleben
Keyword(s):  
Electron Microscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation

Optical and Electron Microscopy Investigation of Damaged Storz Firehose Couplings Microstructure

2018 ◽  
Vol 919 ◽  
pp. 379-385
Author(s):  
Cornel Băbuţ ◽  
Nicolae Ungureanu ◽  
Gheorghe Iepure
Keyword(s):  
Electron Microscopy ◽  
Energy Dispersive Spectrometer ◽  
Failure Mechanisms ◽  
Nucleation And Growth ◽  
Microscopic Investigation ◽  
X Ray ◽  
Micro Cracks ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Microstructural Defects

This paper presents the results of a microscopic investigation of fractured Storz type fire hose couplings. It is part of the authors’ previous investigations on the failure mechanisms of this type of couplings. The investigations were performed using optical and scanning electron microscopy with Field Emission Gun (FED) and X-ray Energy Dispersive Spectrometer (EDS). It is shown that the AlSi5Cu1Mg casting alloy, used for the fabrication of these couplings, presents a normal microstructure. Thus, the nucleation and growth of micro-cracks in the investigated couplings are not related to the alloy’s microstructural defects and must be generated by a different process.

Small-Angle X-ray Scattering and Electron Microscopy Investigation of Silica and Carbon Replicas with Ordered Porosity

Langmuir ◽  
2003 ◽  
Vol 19 (10) ◽  
pp. 4303-4308 ◽  
Author(s):  
Françoise Ehrburger-Dolle ◽  
Isabelle Morfin ◽  
Erik Geissler ◽  
Françoise Bley ◽  
Frédéric Livet ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Carbon Replicas ◽  
Ray Scattering

Electron Microscopy of Human Gallstones

1971 ◽  
Vol 29 ◽  
pp. 296-297
Author(s):  
C. Wolpers ◽  
R. Blaschke
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Bile Pigment ◽  
X Ray Diffraction ◽  
Triclinic Crystal System ◽  
X Ray ◽  
Follow Up Study ◽  
Infra Red ◽  
Main Components

Scanning microscopy was used to study the surface of human gallstones and the surface of fractures. The specimens were obtained by operation, washed with water, dried at room temperature and shadowcasted with carbon and aluminum. Most of the specimens belong to patients from a series of X-ray follow-up study, examined during the last twenty years. So it was possible to evaluate approximately the age of these gallstones and to get information on the intensity of growing and solving.Cholesterol, a group of bile pigment substances and different salts of calcium, are the main components of human gallstones. By X-ray diffraction technique, infra-red spectroscopy and by chemical analysis it was demonstrated that all three components can be found in any gallstone. In the presence of water cholesterol crystallizes in pane-like plates of the triclinic crystal system.

Electron Microscopy of Shock Loaded Polycrystalline Beryllium

1974 ◽  
Vol 32 ◽  
pp. 506-507 ◽  
Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens
Keyword(s):  
Electron Microscopy ◽  
Wave Propagation ◽  
Structural Change ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Shock Loading ◽  
Slip Systems ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

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