Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings
The oxidation performance of NiCrAlY and NiCrMo coatings thermally sprayed by high velocity air-fuel (HVAF) technique has been investigated in a chloridizing-oxidizing environment, with and without a KCl deposit, at 600 °C for up to 168 h. Both coatings protected the substrate in the absence of KCl...
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/51038/ |
| _version_ | 1848798398257299456 |
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| author | Sadeghimeresht, Esmaeil Reddy, Liam Hussain, Tanvir Huhtakangas, Matti Markocsan, Nicolaie Joshi, Shrikant |
| author_facet | Sadeghimeresht, Esmaeil Reddy, Liam Hussain, Tanvir Huhtakangas, Matti Markocsan, Nicolaie Joshi, Shrikant |
| author_sort | Sadeghimeresht, Esmaeil |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The oxidation performance of NiCrAlY and NiCrMo coatings thermally sprayed by high velocity air-fuel (HVAF) technique has been investigated in a chloridizing-oxidizing environment, with and without a KCl deposit, at 600 °C for up to 168 h. Both coatings protected the substrate in the absence of KCl due to formation of a dense Cr-rich oxide scale. In the presence of KCl, Cl−/Cl2 diffused through a non-protective and porous NiCr2O4 scale formed on NiCrAlY, leading to formation of volatile CrCl3. On the other hand, Mo in NiCrMo stimulated the formation of a more protective Cr-rich oxide scale which increased the corrosion resistance by reducing Cl−/Cl2 diffusion. |
| first_indexed | 2025-11-14T20:19:08Z |
| format | Article |
| id | nottingham-51038 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:19:08Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-510382020-05-04T19:40:56Z https://eprints.nottingham.ac.uk/51038/ Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings Sadeghimeresht, Esmaeil Reddy, Liam Hussain, Tanvir Huhtakangas, Matti Markocsan, Nicolaie Joshi, Shrikant The oxidation performance of NiCrAlY and NiCrMo coatings thermally sprayed by high velocity air-fuel (HVAF) technique has been investigated in a chloridizing-oxidizing environment, with and without a KCl deposit, at 600 °C for up to 168 h. Both coatings protected the substrate in the absence of KCl due to formation of a dense Cr-rich oxide scale. In the presence of KCl, Cl−/Cl2 diffused through a non-protective and porous NiCr2O4 scale formed on NiCrAlY, leading to formation of volatile CrCl3. On the other hand, Mo in NiCrMo stimulated the formation of a more protective Cr-rich oxide scale which increased the corrosion resistance by reducing Cl−/Cl2 diffusion. Elsevier 2018-06-15 Article PeerReviewed Sadeghimeresht, Esmaeil, Reddy, Liam, Hussain, Tanvir, Huhtakangas, Matti, Markocsan, Nicolaie and Joshi, Shrikant (2018) Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings. Materials & Design, 148 . pp. 17-29. ISSN 0264-1275 Thermal spray coating; NiCrAlYNiCrMo; High-velocity air fuel (HVAF); Biomass-/waste-fired boiler; Fireside corrosion https://www.sciencedirect.com/science/article/pii/S0264127518302338 doi:10.1016/j.matdes.2018.03.048 doi:10.1016/j.matdes.2018.03.048 |
| spellingShingle | Thermal spray coating; NiCrAlYNiCrMo; High-velocity air fuel (HVAF); Biomass-/waste-fired boiler; Fireside corrosion Sadeghimeresht, Esmaeil Reddy, Liam Hussain, Tanvir Huhtakangas, Matti Markocsan, Nicolaie Joshi, Shrikant Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings |
| title | Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings |
| title_full | Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings |
| title_fullStr | Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings |
| title_full_unstemmed | Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings |
| title_short | Influence of KCl and HCl on high temperature corrosion of HVAF-sprayed NiCrAlY and NiCrMo coatings |
| title_sort | influence of kcl and hcl on high temperature corrosion of hvaf-sprayed nicraly and nicrmo coatings |
| topic | Thermal spray coating; NiCrAlYNiCrMo; High-velocity air fuel (HVAF); Biomass-/waste-fired boiler; Fireside corrosion |
| url | https://eprints.nottingham.ac.uk/51038/ https://eprints.nottingham.ac.uk/51038/ https://eprints.nottingham.ac.uk/51038/ |