Wear and Corrosion Resistance of Fe-based Composite TiC Particles Reinforced Coating for Application in Hydraulic Systems

Monday, May 11, 2015: 4:50 PM
Room 101B (Long Beach Convention and Entertainment Center)
Prof. Kirsten Bobzin , Surface Engineering Institute, RWTH Aachen University, Aachen, Germany
Mr. Mehmet Öte , Surface Engineering Institute, RWTH Aachen University, Aachen, Germany
Mr. Thomas Frederik Linke , Surface Engineering Institute, RWTH Aachen University, Aachen, Germany
Ms. Katarzyna Maria Malik , Surface Engineering Institute, RWTH Aachen University, Aachen, Germany
Mr. Tim Konigstein , Surface Engineering Institute, RWTH Aachen University, Aachen, Germany
Thermally sprayed Fe-based coatings reinforced by TiC particles are a cost effective, environmental friendly alternative to carbide coatings such as WC/CoCr, Cr3C2/NiCr and hard chrome coatings. They feature a good wear resistance and, with sufficient amount of alloying elements like Cr and Ni, also a high corrosion resistance. In hydraulic systems the piston is coated for protection against corrosion and wear. New water-based hydraulic fluids require an adaption of the coating system. In order to investigate the wear and corrosion resistance of Fe/TiC a novel powder consisting of a FeCr27Ni18Mo3 matrix and 34 wt% TiC was applied by HVOF and compared to reference samples made of WC/CoCr (HVAF) and hard chrome. Besides an in-depth coating characterization (metallographic analyses, EMPA,…) wear resistance was tested under reverse sliding in a water-based hydraulic fluid. Corrosion resistance was determined by polarization in application-oriented electrolytes (hydraulic fluid at 60 °C, artificial sea water at RT).
See more of: Automotive and Heavy Duty Truck
See more of: Thermal Spray Applications