Investigations on Erosion and Corrosion Behavior of High-Velocity Oxy-Fuel Sprayed WC-Cr3C2-Ni Coatings on AISI 1018 Steel
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M. Ravichandran
Abstract
WC-Cr3C2-Ni thermal spray coatings was applied on the surface of low carbon steel (AISI 1018) using high-velocity oxy-fuel (HVOF) process. The base metal, coating powder and coated materials were analyzed using scanning electron microscope. Water-jet erosion test (WJET) was used to test the mass loss of the samples with different process parameters such as impingement angle, water jet velocity, erodent discharge, and stand-off distance. As results lower mass loss was observed for the selected process parameters. Pitting corrosion test reveals that better corrosion resistance can be achieved for the low carbon steels by WC-Cr3C2-Ni powder coating.
Kurzfassung
Thermisch gespritzte WC-Cr3C2-Ni-Beschichtungen wurden auf der Oberfläche eines niedriglegierten Stahls (AISI 1018) mit dem Hochgeschwindigkeits-Flammspritzen (HVOF) aufgetragen. Das Stahlsubstrat, das Beschichtungspulver und das beschichtete Material wurden mit dem Rasterelektronenmikroskops analysiert. Es wurde ein Wasserstrahlverschleißtest (WJET) angewandt, um den Gewichtsverlust der Proben mit verschiedenen Prozessparametern wie Aufprallwinkel, Wasserstrahlgeschwindigkeit, Beladung mit Erosionsmittel und Düsenabstand zur Oberfläche zu prüfen. Für die ausgewählten Prozessparameter wurde ein Massenverlust beobachtet. Der Lochfraßtest ergab, dass eine bessere Korrosionsbeständigkeit durch eine WC-Cr3C2-Ni-Pulverbeschichtung für den niedriglegierten Stahl erzielt werden kann.
References
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Artikel in diesem Heft
- Veranstaltungen/Events
- Veranstaltungen
- HTM-Praxis
- HTM-Praxis
- Kurzfassungen/Abstracts
- Kurzfassungen
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- In-line Process Control in the Active Screen Plasma Nitrocarburizing Using a Combined Approach Based on Infrared Laser Absorption Spectroscopy and Bias Power Management*
- An Investigation of the Tribological Behaviour of High-Speed Tool Steels at Elevated Temperatures*
- Vergleich tribologischer Laboranalysen mit praktischen Ergebnissen aus Umform- und Zerspanprozessen am Beispiel von schwefelhaltigen Kühlschmierstoffen
- Investigations on Erosion and Corrosion Behavior of High-Velocity Oxy-Fuel Sprayed WC-Cr3C2-Ni Coatings on AISI 1018 Steel
- Automatische Qualitätskontrolle von Walzstählen mit der ACA-Methode
