In Vitro Electrochemical Behavior of Aged Ti-6Al-4V Alloy: A Trial of the Point Defect Model

2021 ◽  
Vol 27 ◽  
pp. 102327
Author(s):  
Nika Zakerin ◽  
Khashayar Morshed-Behbahani
Keyword(s):  
Point Defect ◽  
Electrochemical Behavior ◽  
Defect Model ◽  
Point Defect Model

Electrochemical Behavior of Lithium in Alkaline Aqueous Electrolytes. II. Point Defect Model

1999 ◽  
Vol 146 (4) ◽  
pp. 1326-1335 ◽  
Author(s):  
Osvaldo Pensado‐Rodriguez ◽  
José R. Flores ◽  
Mirna Urquidi‐Macdonald ◽  
Digby D. Macdonald
Keyword(s):  
Point Defect ◽  
Electrochemical Behavior ◽  
Aqueous Electrolytes ◽  
Defect Model ◽  
Point Defect Model

Non-equilibrium point defect model for time-dependent passivation of metal surfaces

2001 ◽  
Vol 46 (22) ◽  
pp. 3387-3396 ◽  
Author(s):  
Balaji Krishnamurthy ◽  
Ralph E. White ◽  
Harry J. Ploehn
Keyword(s):  
Equilibrium Point ◽  
Point Defect ◽  
Metal Surfaces ◽  
Time Dependent ◽  
Defect Model ◽  
Point Defect Model ◽  
Non Equilibrium

In situ X-ray Reflectivity Study of Oxidation Kinetics in Iron and Stainless steel

2004 ◽  
Vol 840 ◽  
Author(s):  
D. H. Kim ◽  
S. S. Kim ◽  
H. H. Lee ◽  
H. W. Jang ◽  
J. W. Kim ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electric Field ◽  
Point Defect ◽  
Oxide Films ◽  
Borate Buffer Solution ◽  
Applied Potential ◽  
Defect Model ◽  
Point Defect Model ◽  
X Ray

ABSTRACTIn situ specular x-ray reflectivity was applied to study the growth kinetics of passive oxide films on iron and stainless steel substrates in pH 8.4 borate buffer solution. Under electrical potential from 0 to 800 mV, the growth rate of oxide films decreases exponentially in thickness following the direct logarithmic growth law predicted in the point defect model. The electric field in the oxide on iron is independent of the applied potentials consistent with the point defect model. In stainless steel, however, the electric field depends strongly on the applied potential indicating that the oxide properties change as the applied potential varies.

Effects of Nb2O5 in (Ba,Bi,Nb)-added TiO2 ceramic varistors

1995 ◽  
Vol 10 (2) ◽  
pp. 345-352 ◽  
Author(s):  
Seng-Lu Yang ◽  
Jenn-Ming Wu
Keyword(s):  
Point Defect ◽  
Charge Compensation ◽  
The Other ◽  
Defect Model ◽  
Point Defect Model ◽  
The Third ◽  
Tio2 Ceramic

Novel (Ba,Bi,Nb)-added TiO2 ceramic was previously proved to be potentially useful as a varistor material, and by varying atmosphere compensation the roles of barium and bismuth have been explored. The present work attempted to investigate how the third additive, niobium, operates on varistor characteristics. The content of added niobium is in the range from 0.125 to 1.0 cat. %, while that of the other additives is always maintained at a constant value. The results show that an adequate addition of niobium, 0.25 cat. % Nb, is beneficial to the improvement of varistor characteristics. The variations of varistor behavior are discussed in terms of a point defect model. Two kinds of charge compensation, for the substitutional incorporation of niobium into the titanium rutile lattice, are also used to illustrate the variation. The detailed results and discussions are shown in this paper.

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