Role of defect structure on hydrogenation properties of Zr 0.9 Ti 0.1 V 2 alloy

2011 ◽  
Vol 36 (15) ◽  
pp. 9318-9323 ◽  
Author(s):  
X.W. Yang ◽  
J.S. Li ◽  
T.B. Zhang ◽  
R. Hu ◽  
X.Y. Xue ◽  
...  
Keyword(s):  
Defect Structure

Surface Defects in Drawn Aluminum Magnet Wire

1975 ◽  
Vol 97 (1) ◽  
pp. 134-141 ◽  
Author(s):  
R. N. Wright ◽  
A. T. Male
Keyword(s):  
Defect Structure ◽  
Surface Characterization ◽  
Surface Defect ◽  
Potential Role ◽  
Surface Defects ◽  
Repair Process ◽  
Fine Surface ◽  
Magnet Wire ◽  
Characterization Studies

The fine surface defect structure of commercial EC grade aluminum magnet wire has been characterized and four basic component types have been identified. A grading system has been established for each of the component defects. Intermediate process surface characterization studies and laboratory drawing experiments have been performed to clarify the origin of the defects. The potential role of drawing lubrication in repairing or compounding the defect structure has been demonstrated and the mechanics of a drawing related repair process have been clarified through study of the effects of rod drawing on hardness indentations.

The Role of Alloy Composition on the Steam Oxidation Resistance of 9-12%Cr Steels

2006 ◽  
Vol 522-523 ◽  
pp. 129-138 ◽  
Author(s):  
Stephen Osgerby ◽  
A. Tony Fry
Keyword(s):  
Oxide Layer ◽  
Defect Structure ◽  
Alloy Composition ◽  
Steam Oxidation ◽  
Oxide Scales ◽  
Martensitic Steels ◽  
Minor Elements ◽  
Composition Modification ◽  
Gas Penetration

Three commercial martensitic steels have been oxidised in steam at 600 and 650 °C for times up to 10000 h. The partition of minor elements within the oxide scales has been determined. Silicon forms an additional oxide layer beneath the spinel. Chromium, molybdenum and tungsten concentrate in the spinel and manganese is present in both the spinel and magnetite. Several proposed mechanisms for steam oxidation have been examined to explain the observed effects of alloy composition. Modification of the oxide defect structure and oxidant gas penetration through microcracks were identified as the mechanisms most able to explain the influence of alloy composition.

Electron Microscope Characterization of Pulse Annealed Semiconductors

1980 ◽  
Vol 2 ◽  
Author(s):  
A. G. CULLIS
Keyword(s):  
Electron Microscopy ◽  
Defect Structure ◽  
Device Fabrication ◽  
Fabrication Technology ◽  
The Past ◽  
Semiconductor Structures ◽  
Pulse Processing ◽  
Processing Techniques

ABSTRACTThe pulse processing techniques that have assumed prominence over the past few years offer various important advantages for device fabrication technology. However, the usefulness of each individual method depends substantially upon the specific annealing mechanism involved. This article demonstrates the role of electron microscopy in elucidating such mechanisms and in analysing annealed semiconductor structures of importance to both research workers and semiconductor technologists. The range of laser and electron beam pulse annealing methods is covered and defect structure transitions observed are related to the solid and liquid phase processes occurring. Characteristic impurity trapping and segregation phenomena are described.

scholarly journals The aggression behavior study of Cl− on the defect structure of passive films on copper

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 15772-15779
Author(s):  
Aoni Xu ◽  
Chaofang Dong ◽  
Xin Wei ◽  
Xiaogang Li ◽  
Digby D. Macdonald
Keyword(s):  
Defect Structure ◽  
Chloride Ions ◽  
Passive Films ◽  
Barrier Layers ◽  
Behavior Study ◽  
Aggression Behavior

The destructive role of chloride ions on the defect structure of barrier layers (bl) is vitally important for understanding the initial breakdown of passive films on metals.

The role of silicon-particle defect structure during low-temperature nitriding

1994 ◽  
Vol 29 (7) ◽  
pp. 1701-1706 ◽  
Author(s):  
T. S. Bartnitskaya ◽  
M. V. Vlasova ◽  
N. G. Kakazei ◽  
T. V. Tomila
Keyword(s):  
Low Temperature ◽  
Defect Structure ◽  
Silicon Particle

scholarly journals CHAPTER 5 Effect of Water Vapour on the High Temperature Oxidation of Stainless Steels

2020 ◽  
Vol 300 ◽  
pp. 107-134
Author(s):  
Somrerk Chandra-ambhorn ◽  
Patthranit Wongpromrat ◽  
Thammaporn Thublaor ◽  
Walairat Chandra-ambhorn
Keyword(s):  
Water Vapour ◽  
Stainless Steels ◽  
Defect Structure ◽  
High Temperature Oxidation ◽  
Surface Reaction ◽  
Adsorbed Water ◽  
Oxide Formation ◽  
Chromium Species ◽  
Temperature Oxidation

This chapter primarily reviews the nature of water vapour when it presents in bulk gas. The change in a ratio between water vapour and corresponding dissociated hydrogen, which determine the thermodynamic stability of the oxide formation, is analysed when the oxidation kinetics are linear and parabolic. When water vapour reaches the solid/gas interface, chromium species volatilisation and oxidation controlled by surface reaction can occur. The adsorbed water vapour can be further incorporated into the oxide possibly in the form of hydrogen defects. The role of these defects on altering the defect structure of the oxide is discussed. Finally, characteristics of the oxide scale on stainless steels formed in the atmosphere containing water vapour are reviewed.

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