Effect of Aluminum Flake Orientation on Coating Appearance

Published

November 1, 2001

Author(s)

Li Piin Sung, Maria E. Nadal, M E. McKnight, Egon Marx, R Dutruc-Rosset, B Laurenti

Abstract

The orientation of platelet-like pigments in coatings is affected by the processing conditions resulting in appearance variations of the final product. A set of aluminum-flake pigmented coatings having different flake orientations was pre-pared using various spray conditions. The orientations of individual flakes were determined using laser scanning confocal microscopy. The orientation distribution was then used as input to a ray scattering model to calculate the optical reflectance of these coatings. The pigment orientation distributions and the measured optical reflectance as a function of scattering angle will be presented and the latter will be compared to the calculated reflectance.

Proceedings Title

International Coatings Expo, Annual Meeting | 79th | Proceedings of the 79th Annual Meeting Technical Program of the FSCT | Federation of Societies for Coatings Technology, FSCT

Volume

79

Conference Dates

November 5-7, 2001

Conference Title

ICE Proceedings

Pub Type

Conferences

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Keywords

appearance, confocal microscopy, flake orientation, optical reflectance, pigmented coatings, ray scattering model

Citation

Sung, L. , Nadal, M. , McKnight, M. , Marx, E. , Dutruc-Rosset, R. and Laurenti, B. (2001), Effect of Aluminum Flake Orientation on Coating Appearance, International Coatings Expo, Annual Meeting | 79th | Proceedings of the 79th Annual Meeting Technical Program of the FSCT | Federation of Societies for Coatings Technology, FSCT, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860367 (Accessed October 13, 2025)