Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C
Alumina-forming β-NiAl coatings were deposited by high Velocity Oxy-fuel (HVOF) thermal spray onto 304 stainless steels for protection against chlorine induced corrosion in a biomass-fired boiler. The corrosion test was conducted in a synthetic gas containing 500 ppm HCl with 10 wt% KCl ash deposit...
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| Format: | Article |
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50053/ |
| _version_ | 1848798140435529728 |
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| author | Bai, Mingwen Reddy, Liam Hussain, Tanvir |
| author_facet | Bai, Mingwen Reddy, Liam Hussain, Tanvir |
| author_sort | Bai, Mingwen |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Alumina-forming β-NiAl coatings were deposited by high Velocity Oxy-fuel (HVOF) thermal spray onto 304 stainless steels for protection against chlorine induced corrosion in a biomass-fired boiler. The corrosion test was conducted in a synthetic gas containing 500 ppm HCl with 10 wt% KCl ash deposit at 700 °C for 250 hours. Severe corrosion was observed with the fast growing alumina at the coating/substrate interface initiating from sample edges. Possible corrosion mechanism was proposed: as supplied by HCl/KCl, the formation of volatile chlorine/chloride acted as a catalyst and promoted the growth of alumina at relatively lower application temperatures (<900 °C). |
| first_indexed | 2025-11-14T20:15:02Z |
| format | Article |
| id | nottingham-50053 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:15:02Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-500532024-08-15T15:28:25Z https://eprints.nottingham.ac.uk/50053/ Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C Bai, Mingwen Reddy, Liam Hussain, Tanvir Alumina-forming β-NiAl coatings were deposited by high Velocity Oxy-fuel (HVOF) thermal spray onto 304 stainless steels for protection against chlorine induced corrosion in a biomass-fired boiler. The corrosion test was conducted in a synthetic gas containing 500 ppm HCl with 10 wt% KCl ash deposit at 700 °C for 250 hours. Severe corrosion was observed with the fast growing alumina at the coating/substrate interface initiating from sample edges. Possible corrosion mechanism was proposed: as supplied by HCl/KCl, the formation of volatile chlorine/chloride acted as a catalyst and promoted the growth of alumina at relatively lower application temperatures (<900 °C). Elsevier 2018-05-01 Article PeerReviewed Bai, Mingwen, Reddy, Liam and Hussain, Tanvir (2018) Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C. Corrosion Science, 135 . pp. 147-157. ISSN 1879-0496 Nickel Aluminide; Stainless Steel; HVOF; Biomass; Chlorine; Thermodynamic https://www.sciencedirect.com/science/article/pii/S0010938X1731644X doi:10.1016/j.corsci.2018.02.047 doi:10.1016/j.corsci.2018.02.047 |
| spellingShingle | Nickel Aluminide; Stainless Steel; HVOF; Biomass; Chlorine; Thermodynamic Bai, Mingwen Reddy, Liam Hussain, Tanvir Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C |
| title | Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C |
| title_full | Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C |
| title_fullStr | Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C |
| title_full_unstemmed | Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C |
| title_short | Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C |
| title_sort | experimental and thermodynamic investigations on the chlorine-induced corrosion of hvof thermal sprayed nial coatings and 304 stainless steels at 700 °c |
| topic | Nickel Aluminide; Stainless Steel; HVOF; Biomass; Chlorine; Thermodynamic |
| url | https://eprints.nottingham.ac.uk/50053/ https://eprints.nottingham.ac.uk/50053/ https://eprints.nottingham.ac.uk/50053/ |