Characterisation of high temperature oxidation using electron backscatter diffraction

2005 ◽  
Vol 22 (3) ◽  
pp. 201-205 ◽  
Author(s):  
G.D. West ◽  
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Electron Backscatter Diffraction ◽  
Temperature Oxidation ◽  
Electron Backscatter ◽  
Backscatter Diffraction

High-temperature oxidation of CoGa: Influence of the crystallographic orientation on the oxidation rate

2002 ◽  
Vol 17 (10) ◽  
pp. 2489-2498 ◽  
Author(s):  
U. Koops ◽  
D. Hesse ◽  
M. Martin
Keyword(s):  
High Temperature ◽  
Crystallographic Orientation ◽  
High Temperature Oxidation ◽  
Elevated Temperatures ◽  
Electron Backscatter Diffraction ◽  
Ex Situ ◽  
Temperature Oxidation ◽  
Transmission Electron ◽  
Backscatter Diffraction

The crystallographic orientation plays an important role in high-temperature oxidation of the intermetallic compound CoGa. When CoGa is exposed to air at elevated temperatures, the oxide β–Ga2O3 is formed, and different scale growth rates are observed, depending on the crystallographic orientation of the CoGa grains. This dependence is a consequence of the anisotropy of the gallium diffusion rate through the β–Ga2O3 scale and of a topotaxial orientation relationship occurring between β–Ga2O3 and CoGa. The combination of ex situ techniques, such as transmission electron microscopy and electron backscatter diffraction with optical microscopy, applied in situ resulted in a thorough understanding of these relations and of the oxidation process in general.

Surface Crystallization of Cordierite from Glass Studied by High-Temperature X-ray Diffraction and Electron Backscatter Diffraction (EBSD)

2011 ◽  
Vol 11 (10) ◽  
pp. 4660-4666 ◽  
Author(s):  
Wolfgang Wisniewski ◽  
Carlos André Baptista ◽  
Matthias Müller ◽  
Günter Völksch ◽  
Christian Rüssel
Keyword(s):  
High Temperature ◽  
Electron Backscatter Diffraction ◽  
Surface Crystallization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Backscatter ◽  
Backscatter Diffraction

Application of electron backscatter diffraction in the SEM to textural problems of coated high-temperature superconductors

2003 ◽  
Vol 94 (5) ◽  
pp. 580-586 ◽  
Author(s):  
Bernhard Obst ◽  
Rainer Nast ◽  
Sonja Schlachter ◽  
Bernd de Boer ◽  
Bernhard Holzapfel ◽  
...  
Keyword(s):  
High Temperature ◽  
Electron Backscatter Diffraction ◽  
High Temperature Superconductors ◽  
Electron Backscatter ◽  
Backscatter Diffraction

β-Ca11B2Si4O22: six-fold twinning, crystal structure and thermal expansion

2018 ◽  
Vol 233 (6) ◽  
pp. 379-390 ◽  
Author(s):  
Sergey N. Volkov ◽  
Valentina A. Yukhno ◽  
Rimma S. Bubnova ◽  
Vladimir V. Shilovskikh
Keyword(s):  
Crystal Structure ◽  
Thermal Expansion ◽  
High Temperature ◽  
Electron Backscatter Diffraction ◽  
Monoclinic Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Backscatter ◽  
Backscatter Diffraction ◽  
Relationship Of

Abstract The low-temperature polymorph β-Ca11B2Si4O22 crystallizes as a monoclinic structure [space group is P21/c, a=14.059(9), b=6.834(5), c=10.597(7) Å, β=100.735(8)°]. The crystal investigated by single-crystal X-ray diffraction was a twin composed of six individuals. The crystal structure is similar to that of mineral spurrite, Ca5(SiO4)2CO3, and can be described as a framework of [CaO5] and [CaO6] polyhedra, the cavities of which are filled with [SiO4] and [BO3] groups. The orientation relationship of twin domains was investigated by electron backscatter diffraction (EBSD). Thermal expansion was studied by high-temperature X-ray powder diffraction. It is slightly anisotropic: α11=10, α22=16, α33=12×10−6°C−1 at 200°C.

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