Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory Coating
The limited wear resistance of commercially pure titanium (CP-Ti) hinders its use in abrasive and erosive environments, despite its good strength–weight ratio and corrosion resistance. This paper reports the first study proposing a novel method for wear-resistant TiNi coating through Ni plating and...
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MDPI AG
2023-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/15/5449 |
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| author | Lei Wang Masayuki Okugawa Hirokazu Konishi Yuheng Liu Yuichiro Koizumi Takayoshi Nakano |
| author_facet | Lei Wang Masayuki Okugawa Hirokazu Konishi Yuheng Liu Yuichiro Koizumi Takayoshi Nakano |
| author_sort | Lei Wang |
| collection | DOAJ |
| description | The limited wear resistance of commercially pure titanium (CP-Ti) hinders its use in abrasive and erosive environments, despite its good strength–weight ratio and corrosion resistance. This paper reports the first study proposing a novel method for wear-resistant TiNi coating through Ni plating and electron beam (EB) irradiation in an in situ synthetic approach. Single-track melting experiments were conducted using the EB to investigate the feasibility of forming a TiNi phase by fusing the Ni plate with the CP-Ti substrate. Varying beam powers were employed at a fixed scanning speed to determine the optimal conditions for TiNi phase formation. The concentration of the melt region was found to be approximate as estimated from the ratio of the Ni-plate thickness to the depth of the melt region, and the region with Ni-48.7 at.% Ti was successfully formed by EB irradiation. The study suggests that the mixing of Ti atoms and Ni atoms was facilitated by fluid flow induced by Marangoni and thermal convections. It is proposed that a more uniform TiNi layer can be achieved through multi-track melting under appropriate conditions. This research demonstrates the feasibility of utilizing EB additive manufacturing as a coating method and the potential for developing TiNi coatings with shape memory effects and pseudoelasticity. |
| first_indexed | 2024-03-11T00:22:03Z |
| format | Article |
| id | doaj.art-03fba79e0b504b5f83ee81773907f48f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T00:22:03Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-03fba79e0b504b5f83ee81773907f48f2023-11-18T23:13:27ZengMDPI AGMaterials1996-19442023-08-011615544910.3390/ma16155449Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory CoatingLei Wang0Masayuki Okugawa1Hirokazu Konishi2Yuheng Liu3Yuichiro Koizumi4Takayoshi Nakano5Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanThe limited wear resistance of commercially pure titanium (CP-Ti) hinders its use in abrasive and erosive environments, despite its good strength–weight ratio and corrosion resistance. This paper reports the first study proposing a novel method for wear-resistant TiNi coating through Ni plating and electron beam (EB) irradiation in an in situ synthetic approach. Single-track melting experiments were conducted using the EB to investigate the feasibility of forming a TiNi phase by fusing the Ni plate with the CP-Ti substrate. Varying beam powers were employed at a fixed scanning speed to determine the optimal conditions for TiNi phase formation. The concentration of the melt region was found to be approximate as estimated from the ratio of the Ni-plate thickness to the depth of the melt region, and the region with Ni-48.7 at.% Ti was successfully formed by EB irradiation. The study suggests that the mixing of Ti atoms and Ni atoms was facilitated by fluid flow induced by Marangoni and thermal convections. It is proposed that a more uniform TiNi layer can be achieved through multi-track melting under appropriate conditions. This research demonstrates the feasibility of utilizing EB additive manufacturing as a coating method and the potential for developing TiNi coatings with shape memory effects and pseudoelasticity.https://www.mdpi.com/1996-1944/16/15/5449commercially pure TiTiNi coatingshape memory alloypseudoelasticitywear resistanceelectron beam melting |
| spellingShingle | Lei Wang Masayuki Okugawa Hirokazu Konishi Yuheng Liu Yuichiro Koizumi Takayoshi Nakano Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory Coating Materials commercially pure Ti TiNi coating shape memory alloy pseudoelasticity wear resistance electron beam melting |
| title | Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory Coating |
| title_full | Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory Coating |
| title_fullStr | Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory Coating |
| title_full_unstemmed | Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory Coating |
| title_short | Fusion of Ni Plating on CP-Titanium by Electron Beam Single-Track Scanning: Toward a New Approach for Fabricating TiNi Self-Healing Shape Memory Coating |
| title_sort | fusion of ni plating on cp titanium by electron beam single track scanning toward a new approach for fabricating tini self healing shape memory coating |
| topic | commercially pure Ti TiNi coating shape memory alloy pseudoelasticity wear resistance electron beam melting |
| url | https://www.mdpi.com/1996-1944/16/15/5449 |
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