Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating
NiCrMo coatings with and without dispersed SiO2 were deposited using high velocity air-fuel (HVAF) technique. Thermogravimetric experiments were conducted in 5% O2+500 vppm HCl+N2 with and without a KCl deposit at 600 °C for up to 168 h. The SiO2-containing coating showed lower weight change due to...
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| Format: | Article |
| Language: | English English |
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National Association of Corrosion Engineers
2018
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| Online Access: | https://eprints.nottingham.ac.uk/51668/ |
| _version_ | 1848798547214860288 |
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| author | Sadeghimeresht, Esmaeil Markocsan, Nicolaie Hussain, Tanvir Huhtakangas, Matti Joshi, Shrikant |
| author_facet | Sadeghimeresht, Esmaeil Markocsan, Nicolaie Hussain, Tanvir Huhtakangas, Matti Joshi, Shrikant |
| author_sort | Sadeghimeresht, Esmaeil |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | NiCrMo coatings with and without dispersed SiO2 were deposited using high velocity air-fuel (HVAF) technique. Thermogravimetric experiments were conducted in 5% O2+500 vppm HCl+N2 with and without a KCl deposit at 600 °C for up to 168 h. The SiO2-containing coating showed lower weight change due to formation of a protective and adherent Cr-rich oxide scale. SiO2 decelerated short-circuit diffusion of Cr3+ through scale’s defects, e.g., vacancies, and promoted the selective oxidation of Cr to form the protective Cr-rich oxide scale. Furthermore, the presence of SiO2 led to less subsurface depletion of Cr in the coating, and accordingly less corrosion of the substrate. The formed corrosion product on the SiO2-free coating was highly porous, non-adherent, and thick. |
| first_indexed | 2025-11-14T20:21:30Z |
| format | Article |
| id | nottingham-51668 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T20:21:30Z |
| publishDate | 2018 |
| publisher | National Association of Corrosion Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-516682018-07-27T09:15:12Z https://eprints.nottingham.ac.uk/51668/ Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating Sadeghimeresht, Esmaeil Markocsan, Nicolaie Hussain, Tanvir Huhtakangas, Matti Joshi, Shrikant NiCrMo coatings with and without dispersed SiO2 were deposited using high velocity air-fuel (HVAF) technique. Thermogravimetric experiments were conducted in 5% O2+500 vppm HCl+N2 with and without a KCl deposit at 600 °C for up to 168 h. The SiO2-containing coating showed lower weight change due to formation of a protective and adherent Cr-rich oxide scale. SiO2 decelerated short-circuit diffusion of Cr3+ through scale’s defects, e.g., vacancies, and promoted the selective oxidation of Cr to form the protective Cr-rich oxide scale. Furthermore, the presence of SiO2 led to less subsurface depletion of Cr in the coating, and accordingly less corrosion of the substrate. The formed corrosion product on the SiO2-free coating was highly porous, non-adherent, and thick. National Association of Corrosion Engineers 2018-04-24 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/51668/1/Final%20manuscript.pdf application/pdf en https://eprints.nottingham.ac.uk/51668/2/Table%20and%20Figures.pdf Sadeghimeresht, Esmaeil, Markocsan, Nicolaie, Hussain, Tanvir, Huhtakangas, Matti and Joshi, Shrikant (2018) Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating. Corrosion . ISSN 0010-9312 Thermal Spray Coating; Chlorine-Induced High Temperature Corrosion; NiCrMo; SiO2 Dispersion; High Velocity Air-Fuel (HVAF); Biomass-/Waste-Fired Boiler http://www.corrosionjournal.org/doi/abs/10.5006/2802?code=nace-prem-site doi:10.5006/2802 doi:10.5006/2802 |
| spellingShingle | Thermal Spray Coating; Chlorine-Induced High Temperature Corrosion; NiCrMo; SiO2 Dispersion; High Velocity Air-Fuel (HVAF); Biomass-/Waste-Fired Boiler Sadeghimeresht, Esmaeil Markocsan, Nicolaie Hussain, Tanvir Huhtakangas, Matti Joshi, Shrikant Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating |
| title | Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating |
| title_full | Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating |
| title_fullStr | Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating |
| title_full_unstemmed | Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating |
| title_short | Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating |
| title_sort | effect of sio2 dispersion on chlorine-induced high temperature corrosion of hvaf-sprayed nicrmo coating |
| topic | Thermal Spray Coating; Chlorine-Induced High Temperature Corrosion; NiCrMo; SiO2 Dispersion; High Velocity Air-Fuel (HVAF); Biomass-/Waste-Fired Boiler |
| url | https://eprints.nottingham.ac.uk/51668/ https://eprints.nottingham.ac.uk/51668/ https://eprints.nottingham.ac.uk/51668/ |