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Meeting MS&T25: Materials Science & Technology
Symposium Advanced Coatings for Wear and Corrosion Protection
Presentation Title Effects of Cu, Sn, and Mn additions on intermetallic layer growth in hot-dip aluminizing with Al-9Si bath
Author(s) Jihun Choi, Eui-Jin Jung, Dae-Yoon Kim, Joo-Youl Huh
On-Site Speaker (Planned) Jihun Choi
Abstract Scope Hot-dip aluminizing is a widely employed technique to enhance the corrosion and oxidation resistance of steel, especially for high-temperature applications. This study investigates the effects of adding Cu, Sn, and Mn to Al-9 wt% Si baths on the formation and growth of intermetallic compounds (IMCs) during hot-dip aluminizing of low-carbon steel at 620°C and 675°C. Bath temperatures were selected based on phase diagram evaluations using Thermo-Calc software. Cu and Sn additions had minimal impact on IMC growth, forming τ5(H)-Al8Fe2Si/η-Fe2Al5 bilayers at 675 °C and τ6-Al4.5FeSi/τ5(H)-Al8Fe2Si/η-Fe2Al5 trilayers at 620 °C. Notably, both the total IMC thickness and the η-Fe2Al5 layer increased more rapidly at the lower temperature. In contrast, adding 1 wt% Mn resulted in τ5(H)-Al8Fe2Si/η-Fe2Al5 bilayers at both temperatures and effectively suppressed η-Fe2Al5 growth at 620 °C. Possible mechanisms for the unexpected acceleration of η-Fe2Al5 growth at the lower temperature are discussed.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anti-erosion coatings of silicon carbide and tantalum carbonitride nanocomposite by chemical vapor deposition
Cold-sprayed and arc-melted high-entropy alloys: wear, erosion and oxidation
Effect of chromium content on intermetallic growth and heat resistance in hot-dip aluminized ferritic stainless steels
Effects of Cu, Sn, and Mn additions on intermetallic layer growth in hot-dip aluminizing with Al-9Si bath
Enhanced wear resistance of AS41 magnesium alloy via plasma electrolytic oxidation
Enhancing Tribological and Corrosive Properties of AM60 and AZ91 Magnesium Alloys via PEO Surface Modification
Evolution of mechanical properties of PEO coated Mg rods.
Laser Cladding of CoCrCuFeNi and CoCrFeNi High-Entropy Alloys on DMR 249A Steel: Corrosion and Wear behavior
Modern corrosion and wear-resistant coatings obtained using FA-charges operating in aggressive conditions of industrial production
NbC Reinforced Ni Based Alloy Cladding by Thermal Spray Coatings and Weld Overlay Technique
Open-Air Plasma Assisted Organosilicon Coating on Automotive Aluminum Alloys for Corrosion Protection
Oxide thin films obtained by reactive sputtering for antifouling purposes
Tailored DLC Coating for Regolith Dust Mitigation
Tribocorrosion Performance of TiAlN and AlTiN Coatings on Ti6Al4V Alloy for Biomedical Applications
Understanding the role of particle size on thin coating formation and mechanical properties of WC-Co-Cr coatings deposited by HVAF spray

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