Abstract: Diesel particulate filter (DPF) plays a direct role in creating cleaner air and reducing public health risks. Filters made from FeCrAl sintered metal fibers (SMFs) offer outstanding mechanical strength and thermal conductivity. DPF depends primarily on its available surface area. In addition, surface area regulates the density of active catalytic sites for the oxidation process. The current study focuses on the optimization of the FeCrAl SMFs surface area through controlled thermal oxidation. Thermal oxidation process leads to the formation of a high-area aluminum oxide layer. Experimental results, using Brunauer-Emmett-Tiller (BET) analysis, Investigate the impact of oxidation temperature on SMF surface area. In this investigation, Sample 5 (oxidized at 1000 °C) showed the smallest surface area of 107 cm²/g. This indicates that thermal oxidation at 1000 °C represents a thin or poorly developed oxide layer. Samples 2 and 4, oxidized thermally at 800 °C and (930-960-990) °C respectively, produced intermediate surface areas, ranging from 210 cm²/g to 300 cm²/g. This shows that these temperatures facilitate greater oxide growth than 1000 °C, but do not achieve the maximum possible surface area development. Sample 3, oxidized at 900 °C, achieved the highest surface area of 1569 cm²/g, demonstrating that 900 °C is highly effective in high-surface-area oxide form. This study confirms that oxidation temperature is an important factor in optimizing the surface area of FeCrAl metal microfibers.
Keywords: BET Analysis, FeCrAl Sintered Metal Fibers, Thermal Oxidation, Surface Area, Structured Catalyst.
Title: Enhancement and Quantification of Surface Area in Thermally Oxidized FeCrAl Sintered Metal Fibers via BET Analysis
Author: Loai Ben Naji
International Journal of Mechanical and Industrial Technology
ISSN 2348-7593 (Online)
Vol. 13, Issue 2, October 2025 - March 2026
Page No: 46-50
Research Publish Journals
Website: www.researchpublish.com
Published Date: 21-November-2025
