Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters
This work aims at contributing to the development of a revolutionary technology based on shape memory alloy (SMA) coatings deposited on-site to large-scale metallic structural elements, which operate in extreme environmental conditions, such as steel bridges and buildings. The proposed technology wi...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/7867302 |
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| author | Carmen De Crescenzo Despina Karatza Dino Musmarra Simeone Chianese Theocharis Baxevanis Panagiota T. Dalla Dimitrios A. Exarchos Konstantinos G. Dassios Theodore E. Matikas |
| author_facet | Carmen De Crescenzo Despina Karatza Dino Musmarra Simeone Chianese Theocharis Baxevanis Panagiota T. Dalla Dimitrios A. Exarchos Konstantinos G. Dassios Theodore E. Matikas |
| author_sort | Carmen De Crescenzo |
| collection | DOAJ |
| description | This work aims at contributing to the development of a revolutionary technology based on shape memory alloy (SMA) coatings deposited on-site to large-scale metallic structural elements, which operate in extreme environmental conditions, such as steel bridges and buildings. The proposed technology will contribute to improve the integrity of metallic civil structures, to alter and control their mechanical properties by external stimuli, to contribute to the stiffness and rigidity of an elastic metallic structure, to safely withstand the expected loading conditions, and to provide corrosion protection. To prove the feasibility of the concept, investigations were carried out by depositing commercial NiTinol Ni50.8Ti (at.%) powder, onto stainless steel substrates by using high-velocity oxygen-fuel thermal spray technology. While the NiTinol has been known since decades, this intermetallic alloy, as well as no other alloy, was ever used as the SMA-coating material. Due to the influence of dynamics of spraying and the impact energy of the powder particles on the properties of thermally sprayed coatings, the effects of the main spray parameters, namely, spray distance, fuel-to-oxygen feed rate ratio, and coating thickness, on the quality and properties of the coating, in terms of hardness, adhesion, roughness, and microstructure, were investigated. |
| format | Article |
| id | doaj-art-ad9305f209fd4207bd1db37cbc822445 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-ad9305f209fd4207bd1db37cbc8224452025-02-03T01:23:21ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/78673027867302Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying ParametersCarmen De Crescenzo0Despina Karatza1Dino Musmarra2Simeone Chianese3Theocharis Baxevanis4Panagiota T. Dalla5Dimitrios A. Exarchos6Konstantinos G. Dassios7Theodore E. Matikas8Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, ItalyDepartment of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, ItalyDepartment of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, ItalyDepartment of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, ItalyDepartment of Mechanical Engineering, University of Houston, Houston, TX 77204, USADepartment of Materials Science and Engineering, University of Ioannina, Ioannina 45110, GreeceDepartment of Materials Science and Engineering, University of Ioannina, Ioannina 45110, GreeceDepartment of Materials Science and Engineering, University of Ioannina, Ioannina 45110, GreeceDepartment of Materials Science and Engineering, University of Ioannina, Ioannina 45110, GreeceThis work aims at contributing to the development of a revolutionary technology based on shape memory alloy (SMA) coatings deposited on-site to large-scale metallic structural elements, which operate in extreme environmental conditions, such as steel bridges and buildings. The proposed technology will contribute to improve the integrity of metallic civil structures, to alter and control their mechanical properties by external stimuli, to contribute to the stiffness and rigidity of an elastic metallic structure, to safely withstand the expected loading conditions, and to provide corrosion protection. To prove the feasibility of the concept, investigations were carried out by depositing commercial NiTinol Ni50.8Ti (at.%) powder, onto stainless steel substrates by using high-velocity oxygen-fuel thermal spray technology. While the NiTinol has been known since decades, this intermetallic alloy, as well as no other alloy, was ever used as the SMA-coating material. Due to the influence of dynamics of spraying and the impact energy of the powder particles on the properties of thermally sprayed coatings, the effects of the main spray parameters, namely, spray distance, fuel-to-oxygen feed rate ratio, and coating thickness, on the quality and properties of the coating, in terms of hardness, adhesion, roughness, and microstructure, were investigated.http://dx.doi.org/10.1155/2018/7867302 |
| spellingShingle | Carmen De Crescenzo Despina Karatza Dino Musmarra Simeone Chianese Theocharis Baxevanis Panagiota T. Dalla Dimitrios A. Exarchos Konstantinos G. Dassios Theodore E. Matikas Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters Advances in Materials Science and Engineering |
| title | Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters |
| title_full | Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters |
| title_fullStr | Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters |
| title_full_unstemmed | Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters |
| title_short | Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters |
| title_sort | ni ti shape memory alloy coatings for structural applications optimization of hvof spraying parameters |
| url | http://dx.doi.org/10.1155/2018/7867302 |
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