Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear Characteristics
In this study, the surface of aluminum powder was uniformly coated with in situ reduced graphene oxide (r-GO) sheets (Al/r-GO). The Ni powder, Al<sub>2</sub>O<sub>3</sub> powder, and Al/r-GO powders were mixed uniformly in a mass ratio of 20:6:4. In situ rGO-reinforced Ni–Al...
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MDPI AG
2023-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/9/3537 |
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| author | Zhikai Liu Weiqi Lian Cansen Liu Xiaohua Jie |
| author_facet | Zhikai Liu Weiqi Lian Cansen Liu Xiaohua Jie |
| author_sort | Zhikai Liu |
| collection | DOAJ |
| description | In this study, the surface of aluminum powder was uniformly coated with in situ reduced graphene oxide (r-GO) sheets (Al/r-GO). The Ni powder, Al<sub>2</sub>O<sub>3</sub> powder, and Al/r-GO powders were mixed uniformly in a mass ratio of 20:6:4. In situ rGO-reinforced Ni–Al intermetallic composite coatings were successfully prepared using low-pressure cold spraying and subsequent heat treatment. The microstructure and phase of the composite coatings were characterized using X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). The high-temperature wear test was conducted at 200 °C, 400 °C, and 600 °C to understand the mechanism. The results indicate that the in situ rGO-reinforced Ni–Al intermetallic composite coatings exhibit a 33.3% lower friction coefficient and 26% lower wear rate in comparison to pure Ni–Al intermetallic coatings, which could be attributed to the generation of an easy-shearing transferred film between the coating and grinding ball. |
| first_indexed | 2024-03-11T04:13:20Z |
| format | Article |
| id | doaj.art-90c7fcc3619e4a7294e9168c167c738c |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T04:13:20Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-90c7fcc3619e4a7294e9168c167c738c2023-11-17T23:17:26ZengMDPI AGMaterials1996-19442023-05-01169353710.3390/ma16093537Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear CharacteristicsZhikai Liu0Weiqi Lian1Cansen Liu2Xiaohua Jie3School of Material and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Material and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Material and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Material and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaIn this study, the surface of aluminum powder was uniformly coated with in situ reduced graphene oxide (r-GO) sheets (Al/r-GO). The Ni powder, Al<sub>2</sub>O<sub>3</sub> powder, and Al/r-GO powders were mixed uniformly in a mass ratio of 20:6:4. In situ rGO-reinforced Ni–Al intermetallic composite coatings were successfully prepared using low-pressure cold spraying and subsequent heat treatment. The microstructure and phase of the composite coatings were characterized using X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). The high-temperature wear test was conducted at 200 °C, 400 °C, and 600 °C to understand the mechanism. The results indicate that the in situ rGO-reinforced Ni–Al intermetallic composite coatings exhibit a 33.3% lower friction coefficient and 26% lower wear rate in comparison to pure Ni–Al intermetallic coatings, which could be attributed to the generation of an easy-shearing transferred film between the coating and grinding ball.https://www.mdpi.com/1996-1944/16/9/3537cold sprayinggraphene oxideheat treatmentwear resistance |
| spellingShingle | Zhikai Liu Weiqi Lian Cansen Liu Xiaohua Jie Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear Characteristics Materials cold spraying graphene oxide heat treatment wear resistance |
| title | Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear Characteristics |
| title_full | Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear Characteristics |
| title_fullStr | Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear Characteristics |
| title_full_unstemmed | Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear Characteristics |
| title_short | Fabrication of In Situ rGO Reinforced Ni–Al Intermetallic Composite Coatings by Low Pressure Cold Spraying with Desired High Temperature Wear Characteristics |
| title_sort | fabrication of in situ rgo reinforced ni al intermetallic composite coatings by low pressure cold spraying with desired high temperature wear characteristics |
| topic | cold spraying graphene oxide heat treatment wear resistance |
| url | https://www.mdpi.com/1996-1944/16/9/3537 |
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