Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments
Although nickel-based alloys are widely used in industries due to their oxidation and corrosion resistance, the pursuit of better performance in harsh environments is still a great challenge. In this work, we developed a sol–gel method to synthesize Ni<sub>3</sub>Al coating on a nickel a...
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MDPI AG
2022-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/19/6566 |
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| author | Yuelong Pan Zhidong Zhang Daoyuan Wang Hao Guo Qiwu Shi Tiecheng Lu |
| author_facet | Yuelong Pan Zhidong Zhang Daoyuan Wang Hao Guo Qiwu Shi Tiecheng Lu |
| author_sort | Yuelong Pan |
| collection | DOAJ |
| description | Although nickel-based alloys are widely used in industries due to their oxidation and corrosion resistance, the pursuit of better performance in harsh environments is still a great challenge. In this work, we developed a sol–gel method to synthesize Ni<sub>3</sub>Al coating on a nickel alloy, assisted by a post-annealing process, and investigated the oxidation-resistant performance. The coating thickness can be controlled by designing the deposition times, which keep the pure Ni<sub>3</sub>Al phase stable. In addition, the surface morphologies indicate that the coating is compact without obvious voids or cracks. Furthermore, the oxidation-resistant property of the coating was investigated by carrying out a supercritical water oxidation experiment. The crystalline structure and surface morphology of the samples before and after 72-h oxidation demonstrated the superior oxidation resistance of the coating. This work provides a convenient method to fabricate an oxidation-resistant coating on a nickel-based alloy, which would be significant for prolonging the service life of vessels under oxidation conditions, especially for supercritical water reactions. |
| first_indexed | 2024-03-09T21:32:50Z |
| format | Article |
| id | doaj.art-d6489dfbf89c437ba9a565ce6babbc70 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T21:32:50Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d6489dfbf89c437ba9a565ce6babbc702023-11-23T20:53:00ZengMDPI AGMaterials1996-19442022-09-011519656610.3390/ma15196566Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water EnvironmentsYuelong Pan0Zhidong Zhang1Daoyuan Wang2Hao Guo3Qiwu Shi4Tiecheng Lu5China Nuclear Power Engineering Co., Ltd., Shenzhen 518124, ChinaChina Nuclear Power Engineering Co., Ltd., Shenzhen 518124, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Physics, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Physics, Sichuan University, Chengdu 610064, ChinaAlthough nickel-based alloys are widely used in industries due to their oxidation and corrosion resistance, the pursuit of better performance in harsh environments is still a great challenge. In this work, we developed a sol–gel method to synthesize Ni<sub>3</sub>Al coating on a nickel alloy, assisted by a post-annealing process, and investigated the oxidation-resistant performance. The coating thickness can be controlled by designing the deposition times, which keep the pure Ni<sub>3</sub>Al phase stable. In addition, the surface morphologies indicate that the coating is compact without obvious voids or cracks. Furthermore, the oxidation-resistant property of the coating was investigated by carrying out a supercritical water oxidation experiment. The crystalline structure and surface morphology of the samples before and after 72-h oxidation demonstrated the superior oxidation resistance of the coating. This work provides a convenient method to fabricate an oxidation-resistant coating on a nickel-based alloy, which would be significant for prolonging the service life of vessels under oxidation conditions, especially for supercritical water reactions.https://www.mdpi.com/1996-1944/15/19/6566supercritical water reactionnickel alloyNi<sub>3</sub>Al coatingsol–geloxidation resistance |
| spellingShingle | Yuelong Pan Zhidong Zhang Daoyuan Wang Hao Guo Qiwu Shi Tiecheng Lu Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments Materials supercritical water reaction nickel alloy Ni<sub>3</sub>Al coating sol–gel oxidation resistance |
| title | Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments |
| title_full | Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments |
| title_fullStr | Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments |
| title_full_unstemmed | Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments |
| title_short | Sol–Gel-Derived Ni<sub>3</sub>Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments |
| title_sort | sol gel derived ni sub 3 sub al coating on nickel alloy for oxidation resistance in supercritical water environments |
| topic | supercritical water reaction nickel alloy Ni<sub>3</sub>Al coating sol–gel oxidation resistance |
| url | https://www.mdpi.com/1996-1944/15/19/6566 |
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