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Volume 15
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10.3390/ma15196566
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Article

Sol–Gel-Derived Ni3Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments

by
Yuelong Pan
1,
Zhidong Zhang
1,
Daoyuan Wang
2,
Hao Guo
3,
Qiwu Shi
2,* and
Tiecheng Lu
3,*
1
China Nuclear Power Engineering Co., Ltd., Shenzhen 518124, China
2
College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
3
College of Physics, Sichuan University, Chengdu 610064, China
*
Authors to whom correspondence should be addressed.
Materials 2022, 15(19), 6566; https://doi.org/10.3390/ma15196566
Submission received: 6 August 2022 / Revised: 14 September 2022 / Accepted: 19 September 2022 / Published: 22 September 2022
(This article belongs to the Topic Materials and Surface Treatment Processes Used for Engineering Applications)
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Abstract

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 Ni3Al 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 Ni3Al 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.
Keywords: supercritical water reaction; nickel alloy; Ni3Al coating; sol–gel; oxidation resistance supercritical water reaction; nickel alloy; Ni3Al coating; sol–gel; oxidation resistance

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MDPI and ACS Style

Pan, Y.; Zhang, Z.; Wang, D.; Guo, H.; Shi, Q.; Lu, T. Sol–Gel-Derived Ni3Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments. Materials 2022, 15, 6566. https://doi.org/10.3390/ma15196566

AMA Style

Pan Y, Zhang Z, Wang D, Guo H, Shi Q, Lu T. Sol–Gel-Derived Ni3Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments. Materials. 2022; 15(19):6566. https://doi.org/10.3390/ma15196566

Chicago/Turabian Style

Pan, Yuelong, Zhidong Zhang, Daoyuan Wang, Hao Guo, Qiwu Shi, and Tiecheng Lu. 2022. "Sol–Gel-Derived Ni3Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments" Materials 15, no. 19: 6566. https://doi.org/10.3390/ma15196566

APA Style

Pan, Y., Zhang, Z., Wang, D., Guo, H., Shi, Q., & Lu, T. (2022). Sol–Gel-Derived Ni3Al Coating on Nickel Alloy for Oxidation Resistance in Supercritical Water Environments. Materials, 15(19), 6566. https://doi.org/10.3390/ma15196566

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