Badaruddin, Mohammad and Chaur, Jeng Wang and Tarkono, Tarkono and Wardono, Herry and Asmi, Dwi (2016) High-temperature oxidation behavior of aluminized AISI 4130 steel. AIP Conference Proceedings, 1711 (040002). pp. 1-6. ISSN 0094-243X


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AISI 4130 steel was dipped into a molten aluminum bath at 700 degree C for 16 s to produce an aluminide coating on the steel substrate. The coating, which consisted of an Al-rich layer and an FeAl3 and Fe2Al5 intermetallic layer, strongly adhered to the steel substrate. High-temperature oxidation of the bare steel and aluminized steel was performed by thermogravimetry at 850 degree C for 49 h in static air. The oxidation products were characterized by scanning electron microscopy and energy-dispersive spectroscopy. The aluminide coating could increase the oxidation resistance of the bare steel by a factor of ~19. The increase in high-temperature oxidation resistance of the aluminized steel is attributed to the formation of protective alumina scale (alpha-Al2O3). Although iron oxide nodules grew on the aluminide coating surface, the oxidation rate of the aluminide coatings was very low. After 49 h of oxidation, agglomerates of alpha-Al2O3 fine grains grew on the rod-shaped FeAl phases.

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Fakultas Teknik (FT) > Prodi Teknik Mesin
Depositing User: MOHAMMAD B
Date Deposited: 26 Oct 2016 03:34
Last Modified: 04 Nov 2016 03:18

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