Wear and Corrosion Behavior of HVAF Sprayed WC-10Ni and WC-20Cr3C2-6Ni Coatings
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Details
| Original language | English |
|---|---|
| Title of host publication | Surface Modification Technologies XXVIII |
| Subtitle of host publication | Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies |
| Editors | T.S. Sudarshan, Petri Vuoristo, Heli Koivuluoto |
| Publisher | Valardocs |
| Pages | 55-65 |
| Volume | 28 |
| ISBN (Print) | 978-81-926196-1-3 |
| Publication status | Published - Jan 2015 |
| Publication type | A4 Article in a conference publication |
| Event | International Conference on Surface Modification Technologies - , Finland Duration: 1 Jan 2000 → … |
Conference
| Conference | International Conference on Surface Modification Technologies |
|---|---|
| Country | Finland |
| Period | 1/01/00 → … |
Abstract
WC-10Ni and WC-20Cr3C2-6Ni coatings deposited by High Velocity Air-Fuel (HVAF) spraying were studied and compared in the present paper. A series of tribological tests and electrochemical measurements were carried out in order to examine the effect of coating composition on the abrasion, sliding wear and corrosion behavior. The experimental results revealed that the overall wear and corrosion resistance of the WC-10Ni coatings was superior to that of WC-20Cr3C2-6Ni due to denser microstructure, high hardness, and fewer microcracks which act in the coatings as infiltration path for the electrolyte. It was found out that the chemical composition, homogeneity and bonding between splats are important factors influencing the corrosion properties and impermeability of HVAF sprayed WC cermet based coatings in 3,5 wt.% NaCl solution.