Blaž Karpe (Author), Klara Prijatelj (Author), Milan Bizjak (Author), Tadeja Kosec Mikić (Author)

Abstract

Chromium-molybdenum steel (16Mo3) is widely used in petroleum, gas, automotive, and construction industries due to its good oxidation resistance and mechanical properties at moderately elevated temperatures. The aim of the research was to evaluate the corrosion susceptibility of 16Mo3 steel in hot rolled and aluminized states. Aluminization was performed by diffusion pack aluminization process at 900°C/2h and 730°C/4h, respectively. Electrochemical corrosion testing included measuring open circuit potential (EOCP), linear polarization resistance (LPR), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) in potassium phosphate buffer (KH2PO4, pH = 7). Optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) were used for surface layer microstructure characterization before and after corrosion tests. It was demonstrated that corrosion resistance of aluminized steel increased substantially. Corrosion properties were related to the structure and properties of intermetallic phase (FeAl, FeAl2 and Fe2Al5) that formed on the surface of 16Mo3 steel.

Keywords

aluminidne prevleke;aluminizirano jeklo;aluminiziranje;elektrokemijske preiskave korozije;jeklo 16Mo3;odprti dostop;aluminide coatings;aluminized steel;aluminizing;electrochemical corrosion investigation;16Mo3 steel;open access;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: ZAG - Slovenian National Building and Civil Engineering Institute
Publisher: Technical Faculty, Copper Institute
UDC: 544.5/.6
COBISS: 148084739 Link will open in a new window
ISSN: 2217-7175
Views: 225
Downloads: 125
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Other data

Secondary language: Slovenian
Secondary keywords: aluminidne prevleke;aluminizirano jeklo;aluminiziranje;elektrokemijske preiskave korozije;jeklo 16Mo3;
Source comment: Nasl. z nasl. zaslona; Opis vira z dne 6. 4. 2023;
Pages: str. 91-100
Volume: ǂVol. ǂ59
Issue: ǂiss. ǂ1
Chronology: 2023
DOI: 10.2298/JMMB220927008K
ID: 21049433