High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy Powders
The development trends in the energy sector clearly indicate an increase in the share of biomass and alternative fuels fed for combustion in power boilers, which results in the imposition of many unfavourable factors and a demanding working environment. During the operation of the energy system, thi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/4/1658 |
| _version_ | 1797619575662051328 |
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| author | Artur Czupryński Janusz Adamiec Marcin Adamiak Marcin Żuk Antonin Kříž Claudio Mele Monika Kciuk |
| author_facet | Artur Czupryński Janusz Adamiec Marcin Adamiak Marcin Żuk Antonin Kříž Claudio Mele Monika Kciuk |
| author_sort | Artur Czupryński |
| collection | DOAJ |
| description | The development trends in the energy sector clearly indicate an increase in the share of biomass and alternative fuels fed for combustion in power boilers, which results in the imposition of many unfavourable factors and a demanding working environment. During the operation of the energy system, this means a sharp increase in corrosion of the gas-tight pipe walls and coils by the destructive action of chlorine and sulphur. Implementing advanced surface protection in addition to the selection of materials of better quality and resistance to difficult working conditions would significantly reduce their wear by high temperature corrosion. Thermally sprayed coatings offer a great opportunity to protect machine components and energy systems against corrosion, erosion, impact load and abrasive wear. This article presents the test results of high-temperature corrosion resistance of coatings made with Ni-Cr-B-Si and Ni-B-Si alloy powders on a boiler steel substrate. Samples with sprayed coatings were exposed to an atmosphere with a composition of N<sub>2</sub> + 9% O<sub>2</sub> + 0.08% SO<sub>2</sub> + 0.15% HCl at 800 °C for 250, 500, 750 and 1000 h. Tests results of coatings made of Ni-Cr-B-Si alloys subjected to the influence of a corrosive environment showed the formation of a layer of scale on the surface, composed mainly of Cr<sub>2</sub>O<sub>3</sub> oxide, which was a passive layer, reducing the rate of corrosion. Coatings sprayed with Ni-B-Si alloys showed significantly lower corrosion resistance. It was found that the developed technology of subsonic flame spraying with powders of the Ni-Cr-B-Si type allows the production of coatings compliant with the requirements of the energy industry, which allows their use as anti-corrosion protection on boiler elements intended for waste disposal and biomass combustion. |
| first_indexed | 2024-03-11T08:29:01Z |
| format | Article |
| id | doaj.art-068623b4d9b4408a9b7d5009cbd43182 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T08:29:01Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-068623b4d9b4408a9b7d5009cbd431822023-11-16T21:52:46ZengMDPI AGMaterials1996-19442023-02-01164165810.3390/ma16041658High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy PowdersArtur Czupryński0Janusz Adamiec1Marcin Adamiak2Marcin Żuk3Antonin Kříž4Claudio Mele5Monika Kciuk6Department of Welding, Silesian University of Technology, Konarskiego Street 18A, 44-100 Gliwice, PolandDepartment of Metallurgy and Recycling, Silesian University of Technology, Krasińskiego Street 8, 40-019 Katowice, PolandMaterials Research Laboratory, Silesian University of Technology, Konarskiego Street 18A, 44-100 Gliwice, PolandDepartment of Welding, Silesian University of Technology, Konarskiego Street 18A, 44-100 Gliwice, PolandFaculty of Mechanical Engineering, Institute of Technology and Materials, Jan Evangelista Purkyně University in Ústí nad Labem, Pasteurova Street 1, 400 96 Ústí nad Labem, Czech RepublicDepartment of Engineering for Innovation, University of Salento, via per Monteroni, 73100 Lecce, ItalyDepartment of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego Street 18A, 44-100 Gliwice, PolandThe development trends in the energy sector clearly indicate an increase in the share of biomass and alternative fuels fed for combustion in power boilers, which results in the imposition of many unfavourable factors and a demanding working environment. During the operation of the energy system, this means a sharp increase in corrosion of the gas-tight pipe walls and coils by the destructive action of chlorine and sulphur. Implementing advanced surface protection in addition to the selection of materials of better quality and resistance to difficult working conditions would significantly reduce their wear by high temperature corrosion. Thermally sprayed coatings offer a great opportunity to protect machine components and energy systems against corrosion, erosion, impact load and abrasive wear. This article presents the test results of high-temperature corrosion resistance of coatings made with Ni-Cr-B-Si and Ni-B-Si alloy powders on a boiler steel substrate. Samples with sprayed coatings were exposed to an atmosphere with a composition of N<sub>2</sub> + 9% O<sub>2</sub> + 0.08% SO<sub>2</sub> + 0.15% HCl at 800 °C for 250, 500, 750 and 1000 h. Tests results of coatings made of Ni-Cr-B-Si alloys subjected to the influence of a corrosive environment showed the formation of a layer of scale on the surface, composed mainly of Cr<sub>2</sub>O<sub>3</sub> oxide, which was a passive layer, reducing the rate of corrosion. Coatings sprayed with Ni-B-Si alloys showed significantly lower corrosion resistance. It was found that the developed technology of subsonic flame spraying with powders of the Ni-Cr-B-Si type allows the production of coatings compliant with the requirements of the energy industry, which allows their use as anti-corrosion protection on boiler elements intended for waste disposal and biomass combustion.https://www.mdpi.com/1996-1944/16/4/1658flame powder spray processcoatingnickel alloyhigh temperature corrosionsheet pile wallspower boiler |
| spellingShingle | Artur Czupryński Janusz Adamiec Marcin Adamiak Marcin Żuk Antonin Kříž Claudio Mele Monika Kciuk High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy Powders Materials flame powder spray process coating nickel alloy high temperature corrosion sheet pile walls power boiler |
| title | High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy Powders |
| title_full | High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy Powders |
| title_fullStr | High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy Powders |
| title_full_unstemmed | High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy Powders |
| title_short | High-Temperature Corrosion of Flame-Sprayed Power Boiler Components with Nickel Alloy Powders |
| title_sort | high temperature corrosion of flame sprayed power boiler components with nickel alloy powders |
| topic | flame powder spray process coating nickel alloy high temperature corrosion sheet pile walls power boiler |
| url | https://www.mdpi.com/1996-1944/16/4/1658 |
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