Erosion-corrosion of 90° AISI 1018 steel elbows in potash slurry: Effect of particle concentration on surface roughness
| Autor: | Asawo Tamsaki, Regan Gerspacher, Raheem Elemuren, I.N.A. Oguocha, Akindele Odeshi, Richard W. Evitts, Glyn F. Kennell |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Scanning electron microscope Erosion corrosion Flow (psychology) Potash 02 engineering and technology Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films 020303 mechanical engineering & transports 0203 mechanical engineering Brining Mechanics of Materials Materials Chemistry Slurry Surface roughness Particle Composite material 0210 nano-technology |
| Zdroj: | Wear. :37-49 |
| ISSN: | 0043-1648 |
| DOI: | 10.1016/j.wear.2019.04.014 |
| Popis: | A five-day erosion-corrosion study was conducted to investigate the effect of particle concentration on surface roughness of AISI 1018 steel elbows. Tests were performed in a flow loop containing 10, 20 or 30 wt.% particle concentration and saturated potash brine at a slurry flow velocity of 4 m/s. Optical profilometry analysis showed that surface roughness was higher at the entry region of the elbows than those of the middle and exit regions. Scanning electron microscope images of the worn surfaces revealed the presence of gullies and islands on the entry regions at low particle concentration, but ridges and valleys were formed on the middle and exit regions at higher particle concentrations. In general, results showed that surface roughness, mass loss and hardness at the exit regions increased with increasing particle concentration. |
| Databáze: | OpenAIRE |
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