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Dear Colleagues,

With the development of modern technology, advanced ceramics, alloys and their coatings have gradually become important parts of new materials, as well as key materials in the development of many high-tech fields. They have received a great deal of attention from researchers in various industrially developed countries. Advanced ceramics and alloys, which have specific fine structures and many excellent properties (e.g., high strength, high hardness, wear resistance, corrosion resistance, high temperature resistance, etc.), are widely used in various fields, such as national defense, chemical industry, metallurgy, electronics, machinery, aviation, aerospace, biomedicines, etc.

This Special Issue will serve as a forum compiling papers in the following areas:

Theoretical and experimental research, knowledge, and new ideas related to corrosion-protective and -preventive coating mechanisms of ceramic and alloy coatings;
Ion beam modification of metal material surfaces;
Coatings produced through different processes, including, but not limited to, additive manufacturing processeing, laser and plasma processing, thermal spray, CVD, electrodeposition, etc.;
Thermal barrier coating materials, coating preparation and high-temperature corrosion resistance mechanisms;
Applications in high-temperature engineering and corrosion-resistant materials.

Dr. Yi Yang
Dr. Fugang Qi
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.

Related Special Issue

Published Papers (2 papers)

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Research

13 pages, 7096 KiB

Open AccessArticle

Microstructure and Biocompatibility of Graphene Oxide/BCZT Composite Ceramics via Fast Hot-Pressed Sintering

by Bingqing Zhao, Qibin Liu, Geng Tang and Dunying Wang

Coatings 2024, 14(6), 689; https://doi.org/10.3390/coatings14060689 (registering DOI) - 1 Jun 2024

Abstract

Improving fracture toughness, electrical conductivity, and biocompatibility has consistently presented challenges in the development of artificial bone replacement materials. This paper presents a new strategy for creating high-performance, multifunctional composite ceramic materials by doping graphene oxide (GO), which is known to induce osteoblast differentiation and enhance cell adhesion and proliferation into barium calcium zirconate titanate (BCZT) ceramics that already exhibit good mechanical properties, piezoelectric effects, and low cytotoxicity. Using fast hot-pressed sintering under vacuum conditions, (1 − x)(Ba_0.85Ca_0.15Zr_0.1Ti_0.9)O₃₋xGO (0.2 mol% ≤ x ≤ 0.5 mol%) composite piezoelectric ceramics were successfully synthesized. Experimental results revealed that these composite ceramics exhibited high piezoelectric properties (d₃₃ = 18 pC/N, k_p = 62%) and microhardness (173.76 HV_0.5), meeting the standards for artificial bone substitutes. Furthermore, the incorporation of graphene oxide significantly reduced the water contact angle and enhanced their wettability. Cell viability tests using Cell Counting Kit-8, alkaline phosphatase staining, and DAPI staining demonstrated that the GO/BCZT composite ceramics were non-cytotoxic and effectively promoted cell proliferation and growth, indicating excellent biocompatibility. Consequently, with their superior mechanical properties, piezoelectric performance, and biocompatibility, GO/BCZT composite ceramics show extensive potential for application in bone defect repair. Full article

(This article belongs to the Special Issue Advances of Ceramic and Alloy Coatings, 2nd Edition)

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8 pages, 2822 KiB

Open AccessArticle

Evolution of the Microstructure and Mechanical Properties of a Biomedical Ti-20Zr-40Ta Alloy during Aging Treatment

by Xueqing Wu, Kun Yang, Jun Cheng and Jianguo Lin

Coatings 2024, 14(5), 590; https://doi.org/10.3390/coatings14050590 - 9 May 2024

Viewed by 522

Abstract

The research focus in the field of medical titanium alloys has recently shifted towards the development of low-modulus and high-strength titanium alloys. In this study, the influence of aging temperature on the microstructure and mechanical properties of a β-type Ti-20Zr-40Ta alloy (TZT) was investigated. It was found that the recovery and the recrystallization occurred in the as-rolled alloy depended on the aging temperature. The periodically distributed Ta-lean phase (β1) and Ta-rich phase (β2) were produced by the spinodal decomposition in all the samples aged at different temperatures. The spinodal decomposition significantly influenced the mechanical properties and deformation mechanisms of the TZT alloy. Upon aging at 650 °C and 750 °C, the as-rolled alloy exhibited a double-yield phenomenon during tensile testing, indicating a stress-induced martensitic transformation; however, its ductility was limited due to the presence of ω phases. Conversely, aging at 850 °C resulted in an alloy with high strength and good ductility, which was potentially attributed to the enhanced strength resulting from modulated structures introduced with spinodal decomposition. Full article

(This article belongs to the Special Issue Advances of Ceramic and Alloy Coatings, 2nd Edition)

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