Structural changes of SiC under electron-beam irradiation: Temperature dependence

2006 ◽  
Vol 250 (1-2) ◽  
pp. 315-319 ◽  
Author(s):  
In-Tae Bae ◽  
Manabu Ishimaru ◽  
Yoshihiko Hirotsu
Keyword(s):  
Electron Beam ◽  
Temperature Dependence ◽  
Electron Beam Irradiation ◽  
Structural Changes ◽  
Irradiation Temperature ◽  
Beam Irradiation

Twinning and oxygen ordering in Ba2YCu3O7−x crystals

1990 ◽  
Vol 48 (4) ◽  
pp. 14-15
Author(s):  
Sumio Iijima ◽  
Toshinari Ichihashi
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Structural Changes ◽  
Oxygen Deficiency ◽  
Phase 1 ◽  
Structural Evolution ◽  
Beam Irradiation ◽  
Oxygen Ordering ◽  
Tweed Structure ◽  
T Phase

Formation of twins in Or-BYCO crystals was studied by transforming them to T-phase by electron beam irradiation in the microscope. It is known that during the transformation the crystals developed twinning (STW), Ortho-II phase (1×2 superstructure), tweed structure. These structures occur in that order by the irradiation and the structural changes are caused by oxygen deficiency and oxygen atoms ordering. This work is aimed at elucidation of oxygen atom ordering by examining the structural evolution in terms of morphologies of the twins.Atypical evolution of an Or-BYCO crystal is shown in a series of micrographs in Figs. 1 to 5. As-grown twin (FTW) boundaries have a characteristic lens shape extending in the < 110> direction and terminate at a twin boundary in horizontal direction (Fig.1). These boundaries don't accompany strain contrast which is developed in the crystal after a brief irradiation (Fig.2). The strain contrasts, which are differentiated easily from the thickness contrast, appear parallel to the boundaries and change slowly across the boundaries.

Effect of electron-beam irradiation temperature on irradiation damage of high Mn–Cr steel

2004 ◽  
Vol 329-333 ◽  
pp. 1038-1042 ◽  
Author(s):  
D.S Bae ◽  
S.H Nahm ◽  
H.M Lee ◽  
H Kinoshita ◽  
T Shibayama ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Irradiation Temperature ◽  
Irradiation Damage ◽  
Beam Irradiation

Compositional and Structural Changes of Corn Cob Pretreated by Electron Beam Irradiation

2016 ◽  
Vol 5 (1) ◽  
pp. 420-425 ◽  
Author(s):  
Xiaoya Guo ◽  
Ting Zhang ◽  
Sitao Shu ◽  
Wei Zheng ◽  
Mintian Gao
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Structural Changes ◽  
Beam Irradiation ◽  
Corn Cob

Influence of Electron Beam Irradiation as One of the Mixed Crosslinking Systems on the Structure and Properties of Nitrile Rubber

2004 ◽  
Vol 77 (4) ◽  
pp. 624-645 ◽  
Author(s):  
V. Vijayabaskar ◽  
Francis Rene Costa ◽  
Anil K. Bhowmick
Keyword(s):  
Electron Beam ◽  
Solid State Nmr ◽  
Electron Beam Irradiation ◽  
Structural Changes ◽  
Crosslinking Density ◽  
Nitrile Rubber ◽  
Structure And Properties ◽  
Beam Irradiation ◽  
Elongation At Break ◽  
Ir Analysis

Abstract The influence of electron beam on the nitrile rubber vulcanizates at varying levels of sulfur is reported. A higher crosslinking density, reduced elongation at break, increased modulus and tensile strength have been observed for the irradiated rubbers, as compared to the control rubber vulcanizates. The vulcanizate containing higher amount of sulfur, tends to form more crosslinkages on impinging with electron beam. This behavior is explained by the formation of monosulphidic linkages and is ascertained with the help of IR analysis (ATR mode), solid-state NMR analysis and chemical probe treatments of the irradiated vulcanizates. The implausible nature of these mixed crosslinking systems with electron beam as an additional crosslinker is explained with a kinetic model using steady state principle. A mechanistic path is suggested for explaining the structural changes on irradiation of these vulcanizates, which is supported by this model.

Comparison of structural changes in skin and amnion tissue grafts for transplantation induced by gamma and electron beam irradiation for sterilization

2015 ◽  
Vol 17 (2) ◽  
pp. 255-260 ◽  
Author(s):  
H. Mrázová ◽  
J. Koller ◽  
K. Kubišová ◽  
G. Fujeríková ◽  
E. Klincová ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Structural Changes ◽  
Beam Irradiation ◽  
Tissue Grafts
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