X-ray and electron microscopy investigation of the topotactic transformation of MoO3 into MoO2

1980 ◽  
Vol 60 (2) ◽  
pp. 507-519 ◽  
Author(s):  
O. Bertrand ◽  
L. C. Dufour
Keyword(s):  
Electron Microscopy ◽  
X Ray ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Topotactic Transformation

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

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

scholarly journals Understanding the local structure of disordered carbons from cellulose and lignin

2021 ◽  
Author(s):  
Yujie Meng ◽  
Cristian I. Contescu ◽  
Peizhi Liu ◽  
Siqun Wang ◽  
Seung-Hwan Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Treatment Temperature ◽  
Graphite Sheet ◽  
Transmission Electron ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Scanning Transmission ◽  
Disordered Carbon ◽  
Biomass Components ◽  
Softwood Kraft Lignin

AbstractAn electron microscopy investigation was performed to understand the relationship between the microstructure and properties of carbonized cellulose and lignin (softwood kraft lignin) relative to the structure of the original biomass components. Structure details at micro- and molecular levels were investigated by scanning transmission electron microscopy. Atomic-resolution images revealed the presence of random disordered carbon in carbonized cellulose (C-CNC) and of large domains of well-ordered carbon with graphite sheet structure in carbonized lignin (C-Lignin). These structural differences explain why C-CNC exhibits higher surface area and porosity than C-Lignin. The presence of certain well-ordered carbon in carbonized lignin indicates some of the carbon in lignin are graphitized with heat treatment temperature up to 950 °C. This result is encouraging for future endeavors of attaining acceptable modulus of carbon fiber from lignin given suitable modifications to the chemistry and structure of lignin. The results of this research contribute to an improved understanding of the carbonization mechanism of the key cellulose and lignin components of biomass materials.

Sign in / Sign up

Export Citation Format

Share Document