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Implant Surface Coatings and Biocompatibility Evaluation
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Implant Surface Coatings and Biocompatibility Evaluation

A Special Issue of Coatings (ISSN 2079-6412) belonging to the section "Surface Coatings for Biomedicine and Bioengineering".

Deadline for manuscript submissions: 15 January 2027 | Viewed by 625

Editors

Dr. Muhammad Hanif Ramlee

E-Mail Website
Guest Editor
Bone Biomechanics Laboratory (BBL), Department of Biomedical Engineering and Health Sciences, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor 81310, Malaysia
Interests: biomaterials; biomechanics; rehabilitation engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Abdul Halim Abdullah

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, Universiti Teknologi Mara Malaysia (UiTM), Shah Alam 40450, Selangor, Malaysia
Interests: biomaterials; biomechanics; mechanical engineering

Special Issue Information

Dear Colleagues,

The performance and longevity of medical implants are critically dependent on their surface properties and interactions with the biological environment. With the global rise in aging populations, musculoskeletal disorders, and chronic diseases, the demand for reliable and long-lasting implants continues to grow. However, challenges such as implant-associated infections, poor osseointegration, inflammatory responses, and material degradation remain significant barriers. Advances in surface engineering and coating technologies offer promising solutions for enhancing biocompatibility, mechanical stability, and functional integration of implants within the human body.

Recent developments in nanotechnology, bioactive coatings, antimicrobial surfaces, and smart multifunctional materials have opened new frontiers in implant design. These innovations not only improve clinical outcomes but also address critical healthcare challenges, including reducing revision surgeries and healthcare costs. As interdisciplinary research continues to bridge materials science, biomedical engineering, and clinical practice, this field has become increasingly important for both academic investigation and real-world medical applications.

This Special Issue will present and disseminate the most recent advances related to implant surface coatings and their biocompatibility evaluation. We welcome contributions that explore innovative coating materials, surface modification techniques, and comprehensive biological assessments. Submissions may address experimental, computational, and clinical studies that enhance our understanding of implant–tissue interactions and improve implant performance.

Topics of interest for publication include, but are not limited to, the following:

  • Advanced surface coating technologies for biomedical implants;
  • Bioactive and multifunctional coatings (e.g., antibacterial, osteogenic, anti-inflammatory);
  • Nanostructured and nanoscale surface modifications;
  • Surface characterization and physicochemical analysis;
  • In vitro and in vivo biocompatibility evaluation methods;
  • Cell–material interactions and tissue integration mechanisms;
  • Corrosion resistance, wear behavior, and durability of coatings;
  • Smart and stimuli-responsive implant coatings;
  • Coatings for specific applications (orthopedic, dental, cardiovascular, neural implants);
  • Regulatory, standardization, and translational challenges in implant coatings.

Dr. Muhammad Hanif Ramlee
Dr. Abdul Halim Abdullah
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • coatings
  • implant
  • biocompatibility
  • biotoxicity

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

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Research

32 pages, 11913 KB  
Article
Microstructure and Dry-Sliding Tribology of HVOF-Sprayed NiCrBSi/WC-Co Coatings on AZ91D
by Turan Gürgenç, Cevher Kürşat Macit, Medeni Sömer, Bünyamin Aksakal, Merve Ayık and Yakup Say
Coatings 2026, 16(8), 906; https://doi.org/10.3390/coatings16080906 - 30 Jul 2026
Viewed by 400
Abstract
High-velocity oxy-fuel (HVOF)-sprayed NiCrBSi coatings containing 0, 10, 30, and 50 wt.% WC-Co were evaluated on AZ91D magnesium alloy to determine how the discrete reinforcement level affects surface topography, phase constitution, Vickers microhardness, dry-sliding friction, mass loss, and wear-track microchemistry. As-sprayed surfaces were [...] Read more.
High-velocity oxy-fuel (HVOF)-sprayed NiCrBSi coatings containing 0, 10, 30, and 50 wt.% WC-Co were evaluated on AZ91D magnesium alloy to determine how the discrete reinforcement level affects surface topography, phase constitution, Vickers microhardness, dry-sliding friction, mass loss, and wear-track microchemistry. As-sprayed surfaces were characterized by three-dimensional profilometry; coating cross-sections and worn surfaces by optical microscopy and SEM/EDS; phase constitution by XRD; and mechanical response by HV0.1 indentation. Dry-sliding tests were performed at 10, 30, and 50 N over 100–1000 m. Increasing WC-Co content raised Sa from 8.8 ± 0.3 to 13.0 ± 0.5 µm and Vickers microhardness from 776 ± 4 to 959 ± 5 HV0.1. XRD indicated a γ-Ni-based matrix containing boride/carbide constituents, while WC, W2C, and Co became increasingly prominent in the reinforced coatings. Boride assignments are based on diffraction evidence, whereas B and C EDS signals were treated semi-quantitatively. The 50 wt.% WC-Co coating exhibited the lowest mass loss and mean coefficient of friction at every load. Its mean friction coefficients were 0.31, 0.35, and 0.41 at 10, 30, and 50 N, corresponding to reductions of 40.1%, 38.9%, and 36.2% relative to AZ91D. At 1000 m, its mass-normalized wear rate indices were 9.0 × 10−4, 4.0 × 10−4, and 5.3 × 10−4 mg N−1 m−1, respectively. Post-wear mapping showed the largest field-scale W-Co-rich fraction in the 50 wt.% coating; however, isolated spectra containing more than 94 wt.% Mg are compatible with local coating penetration/substrate exposure and/or Mg-rich debris. The 50 wt.% composition therefore provided the best combined response among the four tested levels, while intermediate compositions are required to identify a continuous-composition optimum. Full article
(This article belongs to the Special Issue Implant Surface Coatings and Biocompatibility Evaluation)
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