Development of a transparent scratch resistant coating through direct oxidation of Al-coated glass

• Verfasst von: Mousavi, Sayed H. [VerfasserIn]
• Verfasst von: Jilavi, Mohammad H. [VerfasserIn]
• Verfasst von: Koch, Marcus [VerfasserIn]
• Verfasst von: Arzt, Eduard [VerfasserIn]
• Verfasst von: Oliveira, Peter William de [VerfasserIn]
• Titel: Development of a transparent scratch resistant coating through direct oxidation of Al-coated glass
• Institutionen: Leibniz-Institut für Neue Materialien [GeistigeR SchöpferIn]
• Verf.angabe: by Sayed Hadi Mousavi, Mohammad Hossein Jilavi, Marcus Koch, Eduard Arzt and Peter William de Oliveira
• Jahr des Originals: 2016
• Umfang: 7 S.
• Fussnoten: First published: 19 October 2016 ; Gesehen am 03.08.2017
• Titel Quelle: Enthalten in: Advanced engineering materials
• Jahr Quelle: 2017
• Band/Heft Quelle: 19(2017), 1, S. 1-7
• ISSN Quelle: 1527-2648
• DOI: doi:10.1002/adem.201600617
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1561675431

Abstract

The authors develop a protective transparent coating of aluminum oxide through direct oxidation of aluminum-coated glass. Aluminum coatings are deposited on low-iron glass substrates using a physical deposition method and then oxidized at different temperatures. A uniform nano-porous structure with grain sizes of approximately 30-80 nm is observed. X-ray diffraction, TEM images, and EDX analysis indicate the formation of crystalline γ-Al2O3, Si, and stishovite-SiO2 as a result of interdiffusion. The samples treated at different temperatures have hardness values ranging from 5 to 9 H, which is within the desirable range for industrial scratch-resistant coatings. The optical transmission of around 75-85% at visible wavelengths makes the proposed technique useful for the design of protective transparent coatings.