TY - JOUR N2 - The paper presents the results and provides an analyse of the geometric structure of Fe-Al protective coatings, gas-treated under specified GDS conditions. The analysis of the surface topography was conducted on the basis of the results obtained from the SEM data. Topographic images were converted to three-dimensional maps, scaling the registered amplitude coordinates of specific gray levels to the relative range of 0รท1. This allowed us to assess the degree of surface development by determining the fractal dimension. At the same time, the generated three-dimensional spectra of the autocorrelation function enabled the researchers to determine the autocorrelation length (Sal) and the degree of anisotropy (Str) of the surfaces, in accordance with ISO 25178. Furthermore, the reconstructed three-dimensional images of the topography allowed us to evaluate the functional properties o the studied surfaces based on the Abbott-Firestone curve (A-F), also known as the bearing area curve. The ordinate describing the height of the profile was replaced by the percentage of surface amplitude in this method, so in effect the shares of the height of the three-dimensional topographic map profiles of various load-bearing properties were determined. In this way, both the relative height of peaks, core and recesses as well as their percentages were subsequently established. L1 - http://journals.pan.pl/Content/109176/PDF/AMM-2018-4-57-Chrostek.pdf L2 - http://journals.pan.pl/Content/109176 PY - 2018 IS - No 4 EP - 1999 DO - 10.24425/amm.2018.125135 KW - Fe-Al KW - intermetallic alloys KW - GDS KW - SEM KW - fractal analysis A1 - Chrostek, T. A1 - Rychlik, K. A1 - Bramowicz, M. A1 - Senderowski, C. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 63 DA - 2018.12.12 T1 - Functional and Fractal Properties of Fe-Al Coatings After Gas DetonationSpraying (GDS) SP - 1993 UR - http://journals.pan.pl/dlibra/publication/edition/109176 T2 - Archives of Metallurgy and Materials ER -