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Smart Coatings for the Corrosion Protection of Alloys

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 874

Special Issue Editors


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Guest Editor
School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
Interests: surface engineering; thermal spraying technology; wear-resistant coating; corrosion resistant coating; high temperature protective coating

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Guest Editor
Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences, No.1219 Zhongguan West Road, Ningbo 315201, China
Interests: surface engineering; corrosion mechanism; protective coating

Special Issue Information

Dear Colleagues,

Corrosion of alloys is a significant issue that leads to substantial economic losses and performance degradation in various industries. Smart coatings have emerged as a promising solution in the field of surface engineering for the corrosion protection of alloys. These coatings possess unique properties that enable them to respond intelligently to environmental changes, thereby providing enhanced and long-term protection for alloys used in critical applications such as in the automotive, aerospace, and marine industries.

The corrosion process of alloys is complex and influenced by multiple factors including temperature, humidity, chemical species in the environment, and mechanical stress. Smart coatings address these challenges by incorporating advanced materials and functional components. Their design and development require an in-depth understanding and integration of knowledge from multiple disciplines including materials science, chemistry, physics, and electrical engineering, spanning from the micro- to the macro-scale.

Recent progress in materials research and nanotechnology has opened up new possibilities for creating smart coatings with tailored properties. These include the ability to self-heal when damaged, change their permeability in response to corrosion-inducing agents, or provide early-warning signals of potential corrosion. Advanced manufacturing techniques allow for precise control over the coating's structure and composition, enabling the optimization of its anti-corrosion performance under diverse and often harsh operating conditions.

The aim of this Special Issue, “Smart Coatings for the Corrosion Protection of Alloys”, is to provide a platform for researchers globally to share their latest original research findings, perspectives, and comprehensive reviews regarding the scientific and technological advancements in the development, characterization, and application of smart coatings for alloy corrosion protection.

The topics of interest include, but are not limited to, the following:

  • Synthesis and deposition techniques of smart coatings for alloys.
  • Innovative designs of smart coating compositions and structures to enhance corrosion resistance.
  • Responsive mechanisms of smart coatings to corrosive stimuli.
  • Integration of self-healing, sensing, and other smart functions in alloy-protecting coatings.
  • Modeling and simulation of the interaction between coatings and corrosive environments.
  • Applications of smart coatings in different alloy-based systems and industries.
  • Application of Machine Learning in Intelligent Coating Preparation and Characterization.

Dr. Jibo Huang
Dr. Huanjie Fang
Guest Editors

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Keywords

  • alloy corrosion
  • coating deposition
  • advanced coating design
  • corrosion
  • high-temperature protection
  • wear
  • oxidation
  • multi-factor coupling
  • nondestructive testing and evaluation

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Published Papers (1 paper)

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Research

17 pages, 18517 KiB  
Article
Investigation on High-Temperature Wear Resistance of Co-Based Superalloys Modified by Chromium–Aluminizing Coatings
by Yang Zhang, Ji Liu, Xuehui Zhang and Jibin Pu
Materials 2025, 18(6), 1229; https://doi.org/10.3390/ma18061229 - 10 Mar 2025
Viewed by 577
Abstract
This study systematically explores and expands upon the research questions, revealing the scientific principles and engineering value of chromium–aluminum (Cr-Al) co-diffusion coatings in enhancing high-temperature friction performance. This study addresses the critical need for wear resistance in GH5188 cobalt-based alloy stator bushings operating [...] Read more.
This study systematically explores and expands upon the research questions, revealing the scientific principles and engineering value of chromium–aluminum (Cr-Al) co-diffusion coatings in enhancing high-temperature friction performance. This study addresses the critical need for wear resistance in GH5188 cobalt-based alloy stator bushings operating in high-temperature environments. The high-temperature wear resistance mechanism of aluminized coatings modified with Cr elements on the GH5188 alloy, based on thermal diffusion technology, was investigated. The experimental results indicate that the high-temperature wear resistance of the samples was directly related to the type and content of oxides in the wear scars and debris. After friction at 700 °C, the aluminized coating on the GH5188 alloy showed the lowest oxide content in the wear scars, primarily composed of CoAl2O4. The oxides in the wear scars of the GH5188 alloy and Al-Cr co-aluminized coatings were mainly CoCr2O4 and Cr2O3, with the Al-Cr co-aluminized coating showing the highest amount of wear debris. The Cr-rich oxide debris not only has high thermodynamic stability but also exhibits relatively low high-temperature growth stress, making it difficult to spall. Additionally, the higher diffusion coefficient of Cr3+ accelerates the reoxidation of wear debris pits, resulting in excellent high-temperature wear resistance. The wear rate of the Al-Cr co-aluminized coating was reduced by 30% compared with the GH5188 substrate and by 69% compared with the aluminized coating. In summary, the key findings are not only applicable to cobalt-based alloys but can also be extended to a broader range of material systems and engineering applications. This provides new perspectives and methodologies for the design of high-temperature coatings, the development of materials for extreme conditions, and interdisciplinary applications. Full article
(This article belongs to the Special Issue Smart Coatings for the Corrosion Protection of Alloys)
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