Results 211 to 220 of about 10,094 (256)

The Critical Geometry for Initiation of Crevice Corrosion

Journal of The Electrochemical Society, 1985
Determination experimentale pour Al en solution 0,05 M NaCl de la longueur critique d'une fissure artificielle pour laquelle la corrosion prend naissance. Bon accord avec les previsions theoriques basees sur un modele mathematique de la concentration et de la distribution de potentiel a l'interieur de la ...
Richard Alkire, Thor Tomasson, Kurt Hebert   +2 more
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The thermodynamics of crevice corrosion initiation

Corrosion Science, 1988
Abstract A thermodynamic argument, supported by simplified models of the electrified metal/electrolyte interface, has been used to demonstrate that the hydrogen ion reduction reaction is immediately accessible when a metal/metal crevice geometry is formed.
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Corrosion–fatigue crack initiation in metals

Nature, 1977
A DEFINITE relationship has been observed between the cyclic plastic strain-enhanced dissolution behaviour of metals in aqueous electrolytes and their corrosion–fatigue behaviour in similar conditions of environment and potential. The existence of such a relationship was first suggested in 19701, and the present work forms part of a wide study to ...
C. PATEL, T. PYLE, V. ROLLINS
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Some Aspects of Crack Initiation in Stress Corrosion and Corrosion Fatigue

CORROSION 1988, 1988
Abstract Examples of stress corrosion corrosion fatigue cracks that have been initiated at slip lines, grain boundaries, inclusions and pits are discussed. The effects of the environmental conditions and the electrochemistry in altering the initiating mechanism and hence the resistance to stress corrosion and corrosion fatigue of various
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The initiation of crevice corrosion in stainless steels

Corrosion Science, 1997
Abstract There are currently at least four different models for the initiation of crevice corrosion on stainless steels: (1) passive dissolution leading to gradual acidification and general breakdown; (2) inclusion dissolution causing thiosulphate accumulation and assisting breakdown; (3) IR drop within the crevice forcing the metal into the active ...
N.J. Laycock, J. Stewart, R.C. Newman
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Initial stages of float glass corrosion

Journal of Non-Crystalline Solids, 1997
Abstract The differences between the corrosion process of the bath and the top side of float glass and the dependence on the corrosion process on the thickness of the glass could be demonstrated by ellipsometric measurements of defined corroded float glasses.
M. Feldmann, R. Weiβmann
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Fatigue-crack initiation at corrosion pits

Metals Technology, 1982
Abstract The initiation of fatigue cracks at corrosion pits has been responsible for the failure of a wide range of engineering components. The present work demonstrates the effects ofcorrosion pits up to 250μm deep on the initiation offatigue cracking in both plain and notched specimens of a low-alloy steel.
T. C. Lindley, P. Mcintyre, P. J. Trant
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Stress corrosion initiated cracking of concrete

Cement and Concrete Research, 1986
Abstract The simultaneous action of corrosive media and mechanical stresses on concrete leads to stress corrosion cracking phenomena. The flexural strength of mortar specimens in sulfate-solutions has been found to depend significantly on the external load being applied during the sulfate-solution exposure of the specimens.
U. Schneider, E. Nägele, F. Dumat
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A study of corrosion initiation on polyimide coatings

Corrosion Science, 1992
Abstract The protective properties of thin polyimide (PI) films on aluminum and iron metallic substrates were studied using a.c. and d.c. electrochemical techniques. The effects of storage time, film thickness, and the synergistic effect of temperature (80°C) and relative humidity (85%) on the lifetime of the PI were investigated.
BELLUCCI, FRANCESCO, L. NICODEMO, MONETTA, tullio, MJ KLOPPERS, RM LATANISION   +4 more
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Initial stages of glass corrosion in water

1990
Soda-lime-silica glass samples with fresh fracture surfaces were treated in H2O, D2O, H218O, and D218O for 15, 30, 60, and 120 min at 60 and 85 °C. The leached layers were analyzed by NPB-SIMS, a technique which avoids surface charging by using neutral primary particles.
Richter, Thomas, Frischat, Günther Heinz, Borchardt, Günter, Scherrer, Stanislas   +3 more
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