Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatings
Improving the hydro-abrasive erosion (HAE) resistance of the existing flow-handling components has been a matter of continuous effort for the hydraulic machineries. In current work, the effects of sand concentrations (SC) and flow velocities (FV) on HAE behaviors of high-velocity oxygen-fuel (HVOF)...
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Elsevier
2022-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542201540X |
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| author | Sheng Hong Jiyue Qin Jinran Lin Yuping Wu Jiahui Li Yuan Zheng |
| author_facet | Sheng Hong Jiyue Qin Jinran Lin Yuping Wu Jiahui Li Yuan Zheng |
| author_sort | Sheng Hong |
| collection | DOAJ |
| description | Improving the hydro-abrasive erosion (HAE) resistance of the existing flow-handling components has been a matter of continuous effort for the hydraulic machineries. In current work, the effects of sand concentrations (SC) and flow velocities (FV) on HAE behaviors of high-velocity oxygen-fuel (HVOF) sprayed carbide-based cermet (i.e. Cr3C2–NiCr and WC–Cr3C2–Ni) coatings were studied using a rotating disk rig facility. The obtained results revealed that the WC–Cr3C2–Ni coating possessed lower porosity value, higher hardness (H) and elastic modulus (E) values, superior HAE resistances, and appeared less influenced by SC as well as FV compared with the Cr3C2–NiCr coating. Higher SC and FV caused more severe HAE degradations for both carbide-based cermet coatings, while FV had a greater influence on HAE resistances for both coatings than SC. With the increase of the SC and FV, the Cr3C2–NiCr coating experienced the HAE process of the isolation of hard phase grains as well as the scouring, the connection of micro-cracks as well as severe plastic deformations, and the crater formation as well as deep scour marks, while the HAE process of the WC–Cr3C2–Ni coating mainly included the micro-cracks, the erosion pits, and the scour marks. |
| first_indexed | 2024-04-11T12:50:22Z |
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| id | doaj.art-102ed7e85bd94138850462a20caa0537 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T12:50:22Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj.art-102ed7e85bd94138850462a20caa05372022-12-22T04:23:14ZengElsevierJournal of Materials Research and Technology2238-78542022-11-012115071518Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatingsSheng Hong0Jiyue Qin1Jinran Lin2Yuping Wu3Jiahui Li4Yuan Zheng5College of Mechanics and Materials, Hohai University, 8 Focheng West Road, Nanjing 211100, PR China; Corresponding author.College of Mechanics and Materials, Hohai University, 8 Focheng West Road, Nanjing 211100, PR ChinaCollege of Engineering, Nanjing Agricultural University, 40 Dianjiangtai Road, Nanjing 210031, PR ChinaCollege of Mechanics and Materials, Hohai University, 8 Focheng West Road, Nanjing 211100, PR ChinaCollege of Mechanics and Materials, Hohai University, 8 Focheng West Road, Nanjing 211100, PR ChinaCollege of Energy and Electrical Engineering, Hohai University, 8 Focheng West Road, Nanjing 211100, PR ChinaImproving the hydro-abrasive erosion (HAE) resistance of the existing flow-handling components has been a matter of continuous effort for the hydraulic machineries. In current work, the effects of sand concentrations (SC) and flow velocities (FV) on HAE behaviors of high-velocity oxygen-fuel (HVOF) sprayed carbide-based cermet (i.e. Cr3C2–NiCr and WC–Cr3C2–Ni) coatings were studied using a rotating disk rig facility. The obtained results revealed that the WC–Cr3C2–Ni coating possessed lower porosity value, higher hardness (H) and elastic modulus (E) values, superior HAE resistances, and appeared less influenced by SC as well as FV compared with the Cr3C2–NiCr coating. Higher SC and FV caused more severe HAE degradations for both carbide-based cermet coatings, while FV had a greater influence on HAE resistances for both coatings than SC. With the increase of the SC and FV, the Cr3C2–NiCr coating experienced the HAE process of the isolation of hard phase grains as well as the scouring, the connection of micro-cracks as well as severe plastic deformations, and the crater formation as well as deep scour marks, while the HAE process of the WC–Cr3C2–Ni coating mainly included the micro-cracks, the erosion pits, and the scour marks.http://www.sciencedirect.com/science/article/pii/S223878542201540XHydro-abrasive erosionSand concentrationFlow velocityHVOFCermet coating |
| spellingShingle | Sheng Hong Jiyue Qin Jinran Lin Yuping Wu Jiahui Li Yuan Zheng Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatings Journal of Materials Research and Technology Hydro-abrasive erosion Sand concentration Flow velocity HVOF Cermet coating |
| title | Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatings |
| title_full | Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatings |
| title_fullStr | Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatings |
| title_full_unstemmed | Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatings |
| title_short | Influences of sand concentration and flow velocity on hydro-abrasive erosion behaviors of HVOF sprayed Cr3C2–NiCr and WC–Cr3C2–Ni coatings |
| title_sort | influences of sand concentration and flow velocity on hydro abrasive erosion behaviors of hvof sprayed cr3c2 nicr and wc cr3c2 ni coatings |
| topic | Hydro-abrasive erosion Sand concentration Flow velocity HVOF Cermet coating |
| url | http://www.sciencedirect.com/science/article/pii/S223878542201540X |
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