A Study of the Hot Salt Corrosion Behavior of Three Nickel-Based Single-Crystal Superalloys at 900 °C

Li, Qianyi; Liu, Feng; Li, Yixin; Yao, Jian; Yang, Jingyu; Tan, Liming; Wang, Zi; Huang, Lan; Liu, Yong

doi:10.3390/cryst14040307

Open AccessCommunication

A Study of the Hot Salt Corrosion Behavior of Three Nickel-Based Single-Crystal Superalloys at 900 °C

by

Qianyi Li

^1,2,

Feng Liu

^1,2,

Yixin Li

^1,2,

Jian Yao

^1,2,

Jingyu Yang

^1,2,

Liming Tan

^1,2,

Zi Wang

^3,*,

Lan Huang

^1,2,* and

Yong Liu

^1,2

¹

State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

²

Research Institute of Powder Metallurgy, Central South University, Changsha 410083, China

³

Science and Technology on Advanced Ceramic Fibers & Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

^*

Authors to whom correspondence should be addressed.

Crystals 2024, 14(4), 307; https://doi.org/10.3390/cryst14040307

Submission received: 10 March 2024 / Revised: 22 March 2024 / Accepted: 25 March 2024 / Published: 27 March 2024

(This article belongs to the Special Issue Hot Corrosion and Oxidation of Alloys)

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Abstract

A study of the hot salt corrosion behavior of three nickel-based single-crystal superalloys at 900 °C was conducted. We discovered that the corrosion layer on each alloy was distinctly enriched with Mo, Ni, S, and O, primarily comprising sulfides and oxides. Notably, variations in oxygen distribution across the alloys revealed that the elemental composition plays a pivotal role in their corrosion resistance. These insights not only advance our understanding of the mechanisms driving thermal corrosion in nickel-based single-crystal superalloys but also lay the groundwork for designing alloys with enhanced durability tailored to high-temperature applications. This research marks a significant step toward the optimal design and utilization of superalloys in sectors demanding exceptional material stability under thermal stress.

Keywords: high-temperature corrosion; Ni-based superalloy; molten salt corrosion; corrosion in marine environments

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MDPI and ACS Style

Li, Q.; Liu, F.; Li, Y.; Yao, J.; Yang, J.; Tan, L.; Wang, Z.; Huang, L.; Liu, Y. A Study of the Hot Salt Corrosion Behavior of Three Nickel-Based Single-Crystal Superalloys at 900 °C. Crystals 2024, 14, 307. https://doi.org/10.3390/cryst14040307

AMA Style

Li Q, Liu F, Li Y, Yao J, Yang J, Tan L, Wang Z, Huang L, Liu Y. A Study of the Hot Salt Corrosion Behavior of Three Nickel-Based Single-Crystal Superalloys at 900 °C. Crystals. 2024; 14(4):307. https://doi.org/10.3390/cryst14040307

Chicago/Turabian Style

Li, Qianyi, Feng Liu, Yixin Li, Jian Yao, Jingyu Yang, Liming Tan, Zi Wang, Lan Huang, and Yong Liu. 2024. "A Study of the Hot Salt Corrosion Behavior of Three Nickel-Based Single-Crystal Superalloys at 900 °C" Crystals 14, no. 4: 307. https://doi.org/10.3390/cryst14040307

APA Style

Li, Q., Liu, F., Li, Y., Yao, J., Yang, J., Tan, L., Wang, Z., Huang, L., & Liu, Y. (2024). A Study of the Hot Salt Corrosion Behavior of Three Nickel-Based Single-Crystal Superalloys at 900 °C. Crystals, 14(4), 307. https://doi.org/10.3390/cryst14040307

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A Study of the Hot Salt Corrosion Behavior of Three Nickel-Based Single-Crystal Superalloys at 900 °C

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