Topic
Blisters
About: Blisters is a research topic. Over the lifetime, 980 publications have been published within this topic receiving 16229 citations.
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TL;DR: In this paper, Griffith-type calculations show that the internal hydrogen pressure required to rupture a typical blister is of the order of 103 atm, whereas thermodynamic data indicate that the hydrogen pressure generated within localized corrosion cells on aluminum is about 104 atm.
Abstract: Optical and scanning electron microscopy of ion‐implanted aluminum after polarization above the pitting potential in have shown that corrosion pits are associated with the formation and rupture of blisters caused by gas evolution. The sequence of events involves: (i) the formation or existence of a primary crack or pore in the oxide film that allows solution contact with the metal, (ii) metal dissolution and hydrogen production at the oxide/metal interface, (iii) formation of a hydrogen pocket (bubble) that stresses the oxide film and causes the nucleation and growth of secondary cracks at the primary crack/pore, (iv) and the eventual rupture of the blister caused by the increasing hydrogen pressure. Griffith‐type calculations show that the internal hydrogen pressure required to rupture a typical blister is of the order of 103 atm, whereas thermodynamic data indicate that the internal hydrogen pressure generated within localized corrosion cells on aluminum is about 104 atm.
37 citations
TL;DR: In this article, the effect of radiation damage on hydrogen behavior in tungsten surfaces was investigated and it was shown that the number of blisters produced by the mixed ion beam irradiation decreased with increasing radiation damage, especially for blisters with diameters of 20μm or less.
37 citations
TL;DR: In this paper, a combination of experiments, theoretical modeling, and finite element simulation is explored to explore the mechanics governing the formation and evolution of periodic buckle-delamination on both micro-and macro-scale by bonding a thin film to an extremely pre-strained soft elastomeric substrate over 400%.
Abstract: Through a combination of experiments, theoretical modeling, and finite element simulation, we explore the mechanics governing the formation and evolution of periodic buckle-delamination on both micro- and macro-scale by bonding a thin film to an extremely pre-strained soft elastomeric substrate over 400%. We find that upon the large substrate pre-strain release, the deformation in the film follows a three-stage deformation regime, i.e. onset of localized blisters (Stage I), growth through delamination crack propagation to form periodic sinusoidal blisters (Stage II), and transition to post-buckled jig-saw-like blisters under fixed-end compression after crack arrest (Stage III). Related energy-based mechanics models on predicting the evolution and geometry of periodic blisters under moderate and large compression are developed and validated through both experiments and finite element simulation. Finally, we discuss the potential applications of harnessing spontaneous buckle-delamination for interfacial toughness measurement through the metrology of blisters, as well as design of extremely stretchable electronics by achieving an extremely lower value of maximum tensile strain in the buckle-delaminated film.
37 citations
TL;DR: In this paper, the degradation process of epoxy varnish coating was studied by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and adhesion test.
36 citations
TL;DR: It is speculated that the role of this inhibitor in blister fluid involves the inhibitions of active proteinases within the bulla cavity and may occur to limit the extent of blister formation or to assist in wound repair.
36 citations