Abstract
Co-based alloy modified with La2O3 is deposited by high velocity oxy-fuel (HVOF) spraying rocess. The microstructure, porosity, hardness, and abrasive wear of the coatings are investigated. The La2O3 addition refines the microstructure, forms new phases, and increases hardness and abrasive wear resistance of the modified coating. The abrasive wear behavior of these coatings is investigated under normal loads 5 and 15 N against 220 abrasive grit size. The abrasive wear is carried out using 30 and 50 m/min sliding rates. The abrasive wear is found to increase with the increase in normal load and sliding rates. Analysis of the worn surfaces by scanning electron microscope images revealed cutting and plowing as the material removal mechanisms in these coatings under abrasive wear conditions used in this research.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
