Topic
Delamination
About: Delamination is a research topic. Over the lifetime, 16756 publications have been published within this topic receiving 316520 citations.
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TL;DR: This work demonstrates a highly efficient, nondestructive electrochemical route for the delamination of CVD graphene film from metal surfaces, which affords the advantages of high efficiency, low-cost recyclability, and minimal use of etching chemicals.
Abstract: The separation of chemical vapor deposited (CVD) graphene from the metallic catalyst it is grown on, followed by a subsequent transfer to a dielectric substrate, is currently the adopted method for device fabrication. Most transfer techniques use a chemical etching method to dissolve the metal catalysts, thus imposing high material cost in large-scale fabrication. Here, we demonstrate a highly efficient, nondestructive electrochemical route for the delamination of CVD graphene film from metal surfaces. The electrochemically delaminated graphene films are continuous over 95% of the surface and exhibit increasingly better electronic quality after several growth cycles on the reused copper catalyst, due to the suppression of quasi-periodical nanoripples induced by copper step edges. The electrochemical delamination process affords the advantages of high efficiency, low-cost recyclability, and minimal use of etching chemicals.
569 citations
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TL;DR: A general approach to delaminate multi-layered MXenes using an organic base to induce swelling that in turn weakens the bonds between the MX layers is reported on.
Abstract: Herein we report on a general approach to delaminate multi-layered MXenes using an organic base to induce swelling that in turn weakens the bonds between the MX layers. Simple agitation or mild sonication of the swollen MXene in water resulted in the large-scale delamination of the MXene layers. The delamination method is demonstrated for vanadium carbide and titanium carbonitride MXenes.
559 citations
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TL;DR: In this paper, the authors used a combination of fracture mechanics and post-buckling theory to analyze the mechanics of delamination and spelling of pre-compressed films and indented coatings.
553 citations
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01 Jan 1981TL;DR: In this article, the onset and growth of delaminations in unnotched graphite epoxy laminates is described quantitatively and the strain energy release rate associated with delamination growth is calculated from two analyses.
Abstract: The onset and growth of delaminations in unnotched (+ or - 30/+ or - 30/90/90 bar) sub S graphite epoxy laminates is described quantitatively. These laminates, designed to delaminate at the edges under tensile loads, were tested and analyzed. Delamination growth and stiffness loss were monitored nondestructively. Laminate stiffness decreased linearly with delamination size. The strain energy release rate, G, associated with delamination growth, was calculated from two analyses. A critical G for delamination onset was determined, and then was used to predict the onset of delaminations in (+45 sub n/-45 sub n/o sub n/90 sub n) sub s (n=1,2,3) laminates. A delamination resistance curve (R curve) was developed to characterize the observed stable delamination growth under quasi static loading. A power law correlation between G and delamination growth rates in fatigue was established.
538 citations
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TL;DR: In this article, the AlxCoCrCuFeNi alloys with different aluminum contents prepared by arc melting were investigated on their adhesive wear behaviors and the wear mechanism changes from delamination wear to oxidative wear.
532 citations