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Multi-Functional Nanostructured Sustainable Coatings
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Multi-Functional Nanostructured Sustainable Coatings

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Corrosion, Wear and Erosion".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 8916

Special Issue Editors

Dr. Kamal Kumar

E-Mail Website
Guest Editor
Mechanical Engineering Department, Punjab Engineering College, Chandigarh 160012, India
Interests: advanced machining processes; biodegradable implants; coatings; surface engineering; corrosion analysis
Prof. Dr. Siddiquee Arshad Noor

E-Mail Website
Guest Editor
Mechanical Engineering Department, Jamia Milia Islamia University, New Delhi 110025, India
Interests: surface engineering; friction stir welding and processing; metal cutting; process optimization

Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work to this Special Issue on "Multi-functional Nanostructured Sustainable coatings".

Surface coatings play an efficient role to act as a physical barrier between the metal substrate and external physiological media or extreme working conditions to improve the performance of the components without disturbing the grain morphology. Coatings must have adequate cohesion and adhesion strength to withstand extreme and dynamic working conditions. For biomedical systems, the coating must possess anti-microbial properties along with self-healing/sealing characteristics to counter any scratch or mechanical delamination. The development of multi-layer or hybrid coatings serves to integrate the unique features of each individual layer into a single coating system. However, the selection of appropriate coating architecture is quite challenging to meet the diverse requirements of various applications such as biomedical, electronics, automotive and cutting tool Applications. Nanostructured surface enhances the physical, chemical and biological efficiency of the diversified range of novel applications. In recent times, a number of promising approaches have been developed to fabricate the innovative nanostructured surface, coatings and films.

The aim of this Special Issue is to present the latest developments in the field of Nanostructured functionalized surfaces and coatings, through a combination of original research papers and review articles from leading groups around the world. In particular, the topics of interest include, but are not limited to:

  • Multi-layered Hybrid Coatings for biomedical, electronics, automotive and cutting tool Applications
  • Design and fabrication of novel functionalized surfaces
  • Renewable/ Green coating materials
  • Smart Nanostructured coatings
  • Mechanical, tribological and corrosion analysis of coated Surface
  • Coating Failures
  • Characterization of innovative nanostructured surfaces
  • Sustainability and economic aspects of coating

Dr. Kamal Kumar
Prof. Dr. Siddiquee Arshad Noor
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

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

  • surface functionalization
  • single or multi-layered coatings
  • smart coatings
  • corrosion resistance
  • nanostructured surface
  • tribological properties
  • green coating material
  • sustainability

Published Papers (5 papers)

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Editorial

Jump to: Research

3 pages, 183 KiB  
Editorial
Special Issue: Multi-Functional Nanostructured Sustainable Coatings
by Kamal Kumar, Arihan Jain and Arshad Noor Siddiquee
Coatings 2022, 12(12), 1987; https://doi.org/10.3390/coatings12121987 - 18 Dec 2022
Viewed by 986
Abstract
The applications of surface coatings have been extensively explored in various technological fields, including the aeronautic and transport, tool and die, chemical and petroleum, nuclear, electronics, and biomedical industries [...] Full article
(This article belongs to the Special Issue Multi-Functional Nanostructured Sustainable Coatings)

Research

Jump to: Editorial

12 pages, 4852 KiB  
Article
Development of Aluminium Metal Foams via Friction Stir Processing by Utilizing MgCO3 Precursor
by Mustufa Haider Abidi, Khaja Moiduddin, Arshad Noor Siddiquee, Syed Hammad Mian and Muneer Khan Mohammed
Coatings 2023, 13(1), 162; https://doi.org/10.3390/coatings13010162 - 11 Jan 2023
Cited by 8 | Viewed by 1286
Abstract
Aluminium foams possess multi-functional properties and a low specific weight, making them one of the most suitable choices in the application domain of the automobile and aviation sectors, vibrating machining, and structural parts. Compared to traditional fabrication routes, friction stir processing (FSP) is [...] Read more.
Aluminium foams possess multi-functional properties and a low specific weight, making them one of the most suitable choices in the application domain of the automobile and aviation sectors, vibrating machining, and structural parts. Compared to traditional fabrication routes, friction stir processing (FSP) is gaining acceptance as it is a cost-effective, highly efficient, and innocuous process to fabricate the foam precursors from the bulk substrate. In the current study, FSP was utilized to develop a precursor with MgCO3 powder acting as the blowing agent. The FSP experiments were performed as per Taguchi’s L8 orthogonal array. The precursor was heat treated in an electric furnace at a holding temperature of 650 °C for 10 min. After the post-heat treatments, this precursor resulted in a porous structure due to the evolution of CO2 gas from the composite. The simultaneous effect of tool rotation speed, traverse speed, and shoulder diameter was investigated on the pore size and porosity of the foam produced. The composite parameter “unit stirring” is found to be closely related to the processed zone (PZ) and volume processing rate of the processed zone, pore size, and the degree of porosity. The highest porosity of 16.67% was obtained with an average pore size of 10.5 µm. The largest pore size, 17.8 µm, was observed to be associated with a porosity of 14.40%. The analysis of the Kiviat plot revealed that the values of the PZ area and volume processing rate possess a polar symmetry with unit stirring. The pore size and pore density were both found to be symmetrically distributed about the unit stirring. Full article
(This article belongs to the Special Issue Multi-Functional Nanostructured Sustainable Coatings)
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15 pages, 7140 KiB  
Article
Evaluating the Electrochemical and In Vitro Degradation of an HA-Titania Nano-Channeled Coating for Effective Corrosion Resistance of Biodegradable Mg Alloy
by Navdeep Singh, Uma Batra, Kamal Kumar and Arshad Noor Siddiquee
Coatings 2023, 13(1), 30; https://doi.org/10.3390/coatings13010030 - 24 Dec 2022
Cited by 7 | Viewed by 1792
Abstract
Extensive research into magnesium (Mg) alloys highlights their possible applications in the field of biodegradable implants. As magnesium alloys are highly electronegative, it is imperative to tailor their degradation rate for clinical safety. Surface coatings have been widely used for the corrosion protection [...] Read more.
Extensive research into magnesium (Mg) alloys highlights their possible applications in the field of biodegradable implants. As magnesium alloys are highly electronegative, it is imperative to tailor their degradation rate for clinical safety. Surface coatings have been widely used for the corrosion protection of Mg alloys, but the presence of spatial defects limits their effectiveness. An innovative and near-defect-free hydroxyapatite (HA)-TiO2 nano-channeled (TNC) coating architecture has been developed on ZM21 Mg alloy in the present study by combining anodization and the sol-gel dip coating technique. The HA-TNC coating positively shifted the Ecorr of ZM21 Mg alloy from −1.38 to −0.61 V. Accordingly, the corrosion current density (Icorr, 5.8 × 10−6 A/cm2) was suppressed by 53.4 times compared to uncoated ZM21 Mg alloy. The polarization resistance (Rp) and charge transfer resistance (Rct) values are the highest among all other samples, indicating the superior shielding ability of the coating. During in vitro immersion for up to 28 days in simulated body fluid (SBF), the HA−TNC coating maintained the lowest degradation rate and hydrogen evolution rate (HER) of 1.10 ± 0.22 mg/cm2/day and 1.83 ± 0.41 mL/cm2/day, respectively. A compact and structurally stable 2D plate-like HA (Ca/P:1.55), mineralized on HA-TNC-coated ZM21, provides effective shielding against the penetration of aggressive ions with prolonged SBF immersion. The findings of the present study provide a rational design for the development of bioactive ceramic coatings on Mg-based bioimplants. Full article
(This article belongs to the Special Issue Multi-Functional Nanostructured Sustainable Coatings)
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13 pages, 5608 KiB  
Article
A Smart Anticorrosive Epoxy Coating Based on Graphene Oxide/Functional Mesoporous Silica Nanoparticles for Controlled Release of Corrosion Inhibitors
by Zheng Liu, Biao Zhang, Hao Yu, Zhicai Zhang, Wenjuan Jiang and Zengsheng Ma
Coatings 2022, 12(11), 1749; https://doi.org/10.3390/coatings12111749 - 15 Nov 2022
Cited by 4 | Viewed by 2411
Abstract
When mesoporous nanomaterials and graphene oxide have been used in anti-corrosion coatings, new nanocoatings have attracted greater attention. Adding nano-fillers with special structures and corrosion inhibitors to epoxy coatings has been proven to effectively enhance the corrosion resistance of coatings. However, studies have [...] Read more.
When mesoporous nanomaterials and graphene oxide have been used in anti-corrosion coatings, new nanocoatings have attracted greater attention. Adding nano-fillers with special structures and corrosion inhibitors to epoxy coatings has been proven to effectively enhance the corrosion resistance of coatings. However, studies have pointed out that the added corrosion inhibitors are easily degraded by UV light and react with the metal substrate or materials in the coating, resulting in a significant reduction in the service life of the coating. To this end, in this study, the corrosion inhibitor was encapsulated in mesoporous silica with pH response, and the functional silica was composited with graphene oxide to prepare novel graphene oxide/functional mesoporous silica nanoparticles. Coatings with this special filler added have strong anti-corrosion potential and can be applied in marine anti-corrosion contexts, such as containers, in the future. The filler not only has a physical barrier ability but also can effectively prevent the degradation of the inhibitor due to ultraviolet rays. At the same time, in the early stage of corrosion, the release of inhibitors can be effectively controlled by the change in PH to achieve the purpose of preventing corrosion. UV spectrophotometry confirmed the stable encapsulation and controlled release of the inhibitor. Electrochemical-impedance spectroscopy showed that the |Z|0.01 Hz value of the smart anti-corrosion epoxy coating was about 10,000 times higher than that of the pure epoxy coating. Through the FT-IR mapping test, it was found that in the area of mechanical damage, the alkaline environment created by the initial corrosion can induce the release of tannic acid and react with common corrosion products to form iron tannins, which effectively inhibits the further occurrence of corrosion. This method provides an effective method for the design of heavy-duty anti-corrosion coatings. Full article
(This article belongs to the Special Issue Multi-Functional Nanostructured Sustainable Coatings)
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11 pages, 5697 KiB  
Article
Electrodeposition of Cu-Reinforced Polyaniline Coating for Protection of AH36 Steel in Natural Seawater
by Nguyen Van Chi, Le Hong Quan, Cao Nhat Linh, Nong Quoc Quang, Nguyen Duc Anh, Dong Van Kien and Nguyen Van Hoa
Coatings 2022, 12(11), 1680; https://doi.org/10.3390/coatings12111680 - 04 Nov 2022
Viewed by 1396
Abstract
The marine environment is highly corrosive for mild and low alloy steels. This study aimed to enhance the corrosion resistance of the AH36 steel in a saline medium by coating it with a copper particles reinforced polyaniline (PANI) layer. PANI and Cu particles [...] Read more.
The marine environment is highly corrosive for mild and low alloy steels. This study aimed to enhance the corrosion resistance of the AH36 steel in a saline medium by coating it with a copper particles reinforced polyaniline (PANI) layer. PANI and Cu particles were grown on the steel surface by electrodepositing methods. Firstly, PANI was electropolymerized in the presence of oxalic acid, followed by the electrodeposition of Cu particles at different deposition times. The coating showed a well-distribution of Cu particles in the polymer matrix and excellent adhesion. Furthermore, the Cu particles and PANI-coated steels exhibited corrosion resistance significantly in the saline medium compared to the bare substrate and pristine PANI-coated samples. The improved corrosion protection of a Cu@PANI coating on the AH36 steel could contribute to forming a physical barrier by filling Cu particles on the PANI pores. Full article
(This article belongs to the Special Issue Multi-Functional Nanostructured Sustainable Coatings)
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