Corrosion and Wear Behavior of Metals

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Corrosion and Protection".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 6299

Special Issue Editor

School of Materials Science and Engineering, Chang'an University, Xi'an, China
Interests: electromagnetic shielding materials; microwave absorbing materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As is known to all, the corrosion of metals is a monumental issue worldwide. A considerable proportion of this metal cannot be restored due to the corrosion damage. More importantly, corrosion can lead to structural failure, resulting in sudden accidents. Moreover, from the perspective of sustainable development, we live in a world in which resources are becoming increasingly scarce, and issues related to the environment and quality of life have received increasing attention. The task of corrosion control has become even more complicated with the development of industry and high technology. Therefore, it is particularly urgent to understand corrosion mechanisms, take effective protective measures, and complete risk analyses to successfully reduce the loss caused by corrosion. Wear is another important cause of metal loss and energy consumption. According to research analysis, about 1/2–1/3 of the world’s energy is consumed in various forms of friction, and about 80% of part failures are caused by various forms of wear. Therefore, reducing friction and wear has become the main measure to save energy and raw materials and reduce maintenance costs, and represents the main solution to improve product quality and accuracy, prolong service life and improve product reliability.

In this Special Issue, we welcome articles that focus on anti-corrosion and/or wear-resistant materials, coatings, or surface treatments; both theoretical and practical works are of interest. The papers should cover the methods and mechanisms of corrosion and wear controls, including topics such as high-temperature oxidation, micro-arc oxidation, anodic oxidation, biochemical corrosion, stress corrosion cracking, plasma spraying, electroless plating, electroplating, etc.

Dr. Liang Zhou
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plasma spraying
  • micro-arc oxidation
  • high-temperature oxidation
  • electroless plating
  • electroplating
  • structural characterization
  • anti-corrosion
  • wear-resistant

Published Papers (4 papers)

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Research

15 pages, 7458 KiB  
Article
Tunable Complex Permittivity and Strong Microwave Absorption Properties of Novel Dielectric-Conductive ZnO/C Hybrid Composite Absorbents
by Junxiao Yan, Hongyao Jia, Liang Zhou, Zhenjun Wang and Hongbo Wang
Metals 2023, 13(7), 1220; https://doi.org/10.3390/met13071220 - 1 Jul 2023
Viewed by 843
Abstract
Modern electronic information technology has led social life into inevitable electromagnetic pollution, making microwave absorbing materials more and more important. Herein, dielectric-conductive ZnO/C hybrid composite absorbents were prepared by two-step carbonization with ZnO powders and glucose as critical materials. The electrical conductivity, complex [...] Read more.
Modern electronic information technology has led social life into inevitable electromagnetic pollution, making microwave absorbing materials more and more important. Herein, dielectric-conductive ZnO/C hybrid composite absorbents were prepared by two-step carbonization with ZnO powders and glucose as critical materials. The electrical conductivity, complex permittivity, and reflection loss were analyzed to study the dielectric and microwave absorption properties. Results show that the prepared ZnO/C composite absorbents exist in the form of rod-like ZnO dispersed in the irregular block carbon, and the complex permittivity of the composite absorbents can be adjusted via varying the carbonization temperature. The minimum reflection loss of −25.64 dB is achieved at 1.8 mm thickness for the composite absorbent with 50 wt.% absorbent content as the final carbonization temperature is 750 °C, and the optimum effective absorption bandwidth is 2.21 GHz at 9.64–11.85 GHz. The excellent microwave absorption properties of ZnO/C composite absorbents are attributed to the combination actions of dipole polarization, conductance loss, and interface polarization, which is significant for the purposeful design of superior microwave-absorbing materials with dielectric and conductive absorbents. Full article
(This article belongs to the Special Issue Corrosion and Wear Behavior of Metals)
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19 pages, 20376 KiB  
Article
Investigation on Multiphase Erosion–Corrosion of Elbow in LPG Desulfurization Unit
by Yan Li, Jianwen Zhang, Guoqing Su, Abdul Sandy and Yanan Xin
Metals 2023, 13(2), 256; https://doi.org/10.3390/met13020256 - 28 Jan 2023
Cited by 1 | Viewed by 1571
Abstract
Severe leakages of the elbow occur in the regeneration tower return pipeline of the LPG desulfurization unit, leading to the unplanned shutdown of the unit frequently over the period of four months. It is forced to apply additional steel plates to prevent the [...] Read more.
Severe leakages of the elbow occur in the regeneration tower return pipeline of the LPG desulfurization unit, leading to the unplanned shutdown of the unit frequently over the period of four months. It is forced to apply additional steel plates to prevent the leakage. Elusively, it is found that the first wall contact with the fluid is fully eroded away in the vicinity of the bend, however, the walls of additional steel plates are intact. The clarification of this problem is required to ensure safe production. This strange phenomenon can be investigated by failure analysis and computational fluid dynamics (CFD) simulation. The failure analysis showed that the gas–liquid two-phase erosion–corrosion was the main cause of elbow leakage. The simulation shows that droplet erosion plays a dominant role in the erosion–corrosion process, and the elbow will leak in 4.3 months, which matches the actual situation very well. Furthermore, multiphase erosion–corrosion behavior was thoroughly investigated to expose the feature of the mentioned strange phenomenon. It was shown that when the corrosion holes are formed, the gas forms a fluid vortex in the holes. The vortex acts as flexible substrates, which plays a buffer layer to the droplet erosion, thus protecting the additional steel plate. The formation of the holes provides an effective way for elbow failure prevention. Full article
(This article belongs to the Special Issue Corrosion and Wear Behavior of Metals)
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14 pages, 3986 KiB  
Article
The Effect of Fatigue Damage on the Corrosion Fatigue Crack Growth Mechanism in A7N01P-T4 Aluminum Alloy
by Wenjing Chen, Wei Lu, Guoqing Gou, Liwen Dian, Zhongyin Zhu and Junjun Jin
Metals 2023, 13(1), 104; https://doi.org/10.3390/met13010104 - 4 Jan 2023
Cited by 5 | Viewed by 1857
Abstract
A7N01P-T4 aluminum alloy plates for high-speed trains will experience a certain amount of fatigue damage under alternating loads. Three groups of samples, P0 (no fatigue damage), P1 (loading stress 30 MPa), and P2 (loading stress 70 MPa), were created, and [...] Read more.
A7N01P-T4 aluminum alloy plates for high-speed trains will experience a certain amount of fatigue damage under alternating loads. Three groups of samples, P0 (no fatigue damage), P1 (loading stress 30 MPa), and P2 (loading stress 70 MPa), were created, and corrosion fatigue crack growth (CFCG) tests were conducted in 3.5 wt.% NaC1 solution. The crack growth rate was found to increase after fatigue damage as the damage degree increased. In addition, the A7N01P-T4 aluminum alloy base metal exhibited obvious secondary cracks and crack bifurcations after fatigue damage. It is believed that fatigue damage causes stress concentration in the material, while a certain degree of stress corrosion cracking occurs during the CFCG growth process. This is because hydrogen (H) easily accumulates and diffuses along the grain boundary, which reduces the strength of the grain boundary, thereby becoming the preferred orientation for crack growth. This explains why the CFCG rate of the material is accelerated following fatigue damage to a certain extent. Full article
(This article belongs to the Special Issue Corrosion and Wear Behavior of Metals)
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14 pages, 5472 KiB  
Article
Erosion-Corrosion of Gathering Pipeline Steel in Oil-Water-Sand Multiphase Flow
by Qiang Li and Bingcheng Liu
Metals 2023, 13(1), 80; https://doi.org/10.3390/met13010080 - 28 Dec 2022
Cited by 6 | Viewed by 1599
Abstract
This work studies a series of factors influencing erosion-corrosion in oilfield gathering pipelines steel using the home-made testing pipe flow loop. Results showed that steel was corroded in oil-water flow. The corrosion rate increased with the flow velocity on the whole, and the [...] Read more.
This work studies a series of factors influencing erosion-corrosion in oilfield gathering pipelines steel using the home-made testing pipe flow loop. Results showed that steel was corroded in oil-water flow. The corrosion rate increased with the flow velocity on the whole, and the addition of solid particles would intensify the localized corrosion. For the erosion-corrosion test added with 2 wt% quartz sand at the velocity of 2 m/s, the portion of pure corrosion and pure erosion accounted for 47.50% and 70.83%, respectively. The erosion-enhanced corrosion was 16.67% of the total weight loss, while the corrosion inhibiting the damage from erosion accounted for 35.00%, so negative synergistic effects appeared in the oil-water-sand multiphase flow conditions. Full article
(This article belongs to the Special Issue Corrosion and Wear Behavior of Metals)
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