Diamond-Like Carbon Coatings with Precise and Localized Silver Doping for High-Performance Biomedical Applications

Abdul Wasy Zia*, Mihalis Panagiotidis, Martin Birkett

*Corresponding author for this work

Research output: Contribution to conferenceAbstractpeer-review

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Abstract

Diamond-like carbon (DLC) coatings are recognized due to superior mechanical [1], biomedical, and tribological [2] performance. Therefore, these coatings are actively being used for artificial orthopaedical joints, stents, heart valves, etc. applications. Silver is doped in DLC coatings to boost its biocompatibility for superior biological performance. The increasing amount of silver is inferred to deliver better biological performance. However, DLC coatings lose their unique mechanical and tribological characteristics, such as high hardness, low friction coefficient, and low wear rates due to silver-induced-ductility in the coatings. In this work, silver doped DLC coatings are made with magnetron sputtering technique and the deposition process is controlled to dope silver in form of small isolated nanoparticles at defined depths. The coatings are characterized by microstructure, hardness and Young’s modulus, and biocompatibility studies. The preliminary results suggest that the silver nanoparticles are ~ 10 nm in diameter and uniformly distributed in a plane and embedded at control depths. It is observed that ~ 2 at.% silver when doped in DLC with a controlled deposition process gives similar biocompatibility as delivered by ~ 17 at.% silver which was doped with conventional co-sputtering methods.
Original languageEnglish
Publication statusPublished - 11 Nov 2022
EventThe Korean Society of Mechanical Engineers Annual Meeting 2022 - ICC JEJU, Jeju, Korea, Republic of
Duration: 9 Nov 202212 Nov 2022
http://intl.ksme.or.kr/

Conference

ConferenceThe Korean Society of Mechanical Engineers Annual Meeting 2022
Abbreviated titleKSME Annual Meeting 2022
Country/TerritoryKorea, Republic of
City Jeju
Period9/11/2212/11/22
Internet address

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