2020
DOI: 10.3390/coatings10121245
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Effect of Substrate Strain, Aluminum Thickness and Corona Pretreatment on the Electrical Resistance of Physical Vapor Deposited Aluminum Coatings

Abstract: Aluminum coatings applied to polymer films by physical vapor deposition should be defect-free for applications such as packaging and electronic devices. However, cracks can appear in the aluminum coating as the polymer film stretches, becoming manifest as an increase in resistance. We evaluated the effect of different aluminum thicknesses (10–85 nm), polymer films (polyethylene terephthalate or polypropylene), and corona doses (0–280 W∙min/m2) on the relative increase in resistance during stretching (strain = … Show more

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Cited by 2 publications
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“…The substrate exerts influence on the electrical conductivity of the coating under different ambient conditions [78][79][80][81]. In this backdrop, the reasoning behind the order of electrical resistivities mentioned in section 3.4.3 was scrutinised in the literature, and two properties were discerned to play an important role: porosity of the substrate [82,83] and elasticity of the coating-substrate interface [84,85]. For the chosen substrates (ball clay ceramic, FR4, flat soda-lime glass, paper, polyester sheet and plywood), the porosity values are 2.5%, 7.5%, <0.01%, 25%, 0.1% and 15%, respectively; their Young's moduli are 120, 21, 74, 3, 4.5 and 11 GPa, in order (approximate values as provided by the manufacturer).…”
Section: Factors Influencing the Electrical Resistance At The Substra...mentioning
confidence: 99%
“…The substrate exerts influence on the electrical conductivity of the coating under different ambient conditions [78][79][80][81]. In this backdrop, the reasoning behind the order of electrical resistivities mentioned in section 3.4.3 was scrutinised in the literature, and two properties were discerned to play an important role: porosity of the substrate [82,83] and elasticity of the coating-substrate interface [84,85]. For the chosen substrates (ball clay ceramic, FR4, flat soda-lime glass, paper, polyester sheet and plywood), the porosity values are 2.5%, 7.5%, <0.01%, 25%, 0.1% and 15%, respectively; their Young's moduli are 120, 21, 74, 3, 4.5 and 11 GPa, in order (approximate values as provided by the manufacturer).…”
Section: Factors Influencing the Electrical Resistance At The Substra...mentioning
confidence: 99%
“…A typical SC consists of substrate, current collectors, carbon-based electrodes, separator, and liquid electrolyte. To prevent the evaporation of electrolyte, a layer of metal oxide , or aluminum has been commonly applied onto the substrate. Poly­(ethylene terephthalate) (PET) film, aluminum layer, and their laminates have been used for printed flexible SC and have exhibited extended lifetimes. ,,, However, PET is not biodegradable .…”
Section: Introductionmentioning
confidence: 99%