Alumina Reinforcement of Inconel 625 Coatings by Cold Gas Spraying
Reinforced Inconel625 coatings have been successfully deposited by means of cold gas spray (CGS). Alumina has been simultaneously sprayed achieving a homogeneous distribution along the deposit with good cohesion between particles. The aim of this study was to investigate whether ceramic reinforcemen...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/9/1263 |
| _version_ | 1827705951768018944 |
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| author | Sergi Dosta Nuria Cinca Alessio Silvello Irene G. Cano |
| author_facet | Sergi Dosta Nuria Cinca Alessio Silvello Irene G. Cano |
| author_sort | Sergi Dosta |
| collection | DOAJ |
| description | Reinforced Inconel625 coatings have been successfully deposited by means of cold gas spray (CGS). Alumina has been simultaneously sprayed achieving a homogeneous distribution along the deposit with good cohesion between particles. The aim of this study was to investigate whether ceramic reinforcement could improve the mechanical and tribological properties of Inconel625 cold-sprayed coatings, while keeping the oxidation and corrosion resistance capacity. Furthermore, alumina particles were found to improve the spraying feasibility, by avoiding WC nozzle clogging during the process. A proper optimization of the spraying conditions was carried out in order to obtain the lowest possible porosity and best embedment of the alumina. Then, the mechanical and tribological properties as well as corrosion and oxidation behavior were characterized. Alumina acts as a reinforcement, improving the effects of abrasive and sliding wear. Regarding the oxidation and corrosion behavior, the coatings exhibit reasonably good oxidation resistance at temperatures up to 900 °C. The electrochemical corrosion performance in NaCl solution showed potentially lower noble corrosion values and corrosion current densities than bulk Inconel. |
| first_indexed | 2024-03-10T16:14:43Z |
| format | Article |
| id | doaj.art-9ab464a4c3aa4468b5bfc74e8a0672d7 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T16:14:43Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-9ab464a4c3aa4468b5bfc74e8a0672d72023-11-20T14:11:56ZengMDPI AGMetals2075-47012020-09-01109126310.3390/met10091263Alumina Reinforcement of Inconel 625 Coatings by Cold Gas SprayingSergi Dosta0Nuria Cinca1Alessio Silvello2Irene G. Cano3Thermal Spray Center CPT, University of Barcelona, Martí i Franqués 1, 7<sup>a</sup> Planta, 08028 Barcelona, SpainThermal Spray Center CPT, University of Barcelona, Martí i Franqués 1, 7<sup>a</sup> Planta, 08028 Barcelona, SpainThermal Spray Center CPT, University of Barcelona, Martí i Franqués 1, 7<sup>a</sup> Planta, 08028 Barcelona, SpainThermal Spray Center CPT, University of Barcelona, Martí i Franqués 1, 7<sup>a</sup> Planta, 08028 Barcelona, SpainReinforced Inconel625 coatings have been successfully deposited by means of cold gas spray (CGS). Alumina has been simultaneously sprayed achieving a homogeneous distribution along the deposit with good cohesion between particles. The aim of this study was to investigate whether ceramic reinforcement could improve the mechanical and tribological properties of Inconel625 cold-sprayed coatings, while keeping the oxidation and corrosion resistance capacity. Furthermore, alumina particles were found to improve the spraying feasibility, by avoiding WC nozzle clogging during the process. A proper optimization of the spraying conditions was carried out in order to obtain the lowest possible porosity and best embedment of the alumina. Then, the mechanical and tribological properties as well as corrosion and oxidation behavior were characterized. Alumina acts as a reinforcement, improving the effects of abrasive and sliding wear. Regarding the oxidation and corrosion behavior, the coatings exhibit reasonably good oxidation resistance at temperatures up to 900 °C. The electrochemical corrosion performance in NaCl solution showed potentially lower noble corrosion values and corrosion current densities than bulk Inconel.https://www.mdpi.com/2075-4701/10/9/1263cold gas sprayInconel625Ni-based superalloysmechanical and microstructural propertieswearcorrosion |
| spellingShingle | Sergi Dosta Nuria Cinca Alessio Silvello Irene G. Cano Alumina Reinforcement of Inconel 625 Coatings by Cold Gas Spraying Metals cold gas spray Inconel625 Ni-based superalloys mechanical and microstructural properties wear corrosion |
| title | Alumina Reinforcement of Inconel 625 Coatings by Cold Gas Spraying |
| title_full | Alumina Reinforcement of Inconel 625 Coatings by Cold Gas Spraying |
| title_fullStr | Alumina Reinforcement of Inconel 625 Coatings by Cold Gas Spraying |
| title_full_unstemmed | Alumina Reinforcement of Inconel 625 Coatings by Cold Gas Spraying |
| title_short | Alumina Reinforcement of Inconel 625 Coatings by Cold Gas Spraying |
| title_sort | alumina reinforcement of inconel 625 coatings by cold gas spraying |
| topic | cold gas spray Inconel625 Ni-based superalloys mechanical and microstructural properties wear corrosion |
| url | https://www.mdpi.com/2075-4701/10/9/1263 |
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