NDLI: The Effects of Processing Time on the Microstructure and Composition of Plasma Pack-Aluminized and -Oxidized Surface Layers on Low Carbon Steel

Content Provider	Springer Nature Link
Author	Rastkar, Ahmad Reza Rezvani, Narges
Copyright Year	2015
Abstract	Low carbon steel was plasma pack aluminized at 973 K (700 °C) for 5, 10, and 15 minutes in vacuum of 15 mbar. A paste of aluminum was packed around the samples, and the process was carried out in glow discharge of argon gas in one step without further diffusion processes. The aluminized samples were oxidized at 973 K (700 °C) and 15 mbar for 60 minutes in synthetic air. The aluminized and oxidized layers were characterized for iron-aluminum intermetallic phases, local composition, morphology, and hardness of the phases. At 973 K (700 °C) after 5-, 10-, and 15-minute treatments, FeAl$_{3}$ and Fe$_{2}$Al$_{5}$ intermetallic compounds were observed in the surface layers. After 60-minute oxidation, Fe$_{3}$Al and FeAl compounds appeared at the interface between the compound layers and the oxide scale. Oxidation products were mainly Al$_{2}$O$_{3}$ and a few amounts of Fe$_{3}$O$_{4}$ and Fe$_{2}$O$_{3}$. The thicknesses of the compound layers on the samples were up to 350 μm. The maximum hardness of the aluminized layers was 980 HV0.5.
Starting Page	4132
Ending Page	4142
Page Count	11
File Format	PDF
ISSN	10735623
Journal	Metallurgical and Materials Transactions A
Volume Number	46
Issue Number	9
e-ISSN	15431940
Language	English
Publisher	Springer US
Publisher Date	2015-07-08
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials Characterization and Evaluation of Materials Structural Materials Surfaces and Interfaces, Thin Films Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Metals and Alloys Condensed Matter Physics

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