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Article

Some Hard or Soft Coatings to Protect the Pristine Biometallic Substrates under Fretting-Corrosion Solicitations: What Should Be the Best Solution?

1
Mines Saint-Etienne, Center for Health and Engineering, Inserm U1059, 158 cours Fauriel, 42023 Saint-Etienne, France
2
Ecole Centrale de Lyon, LTDS – UMR CNRS 5513, 36 avenue Guy de Collongue, 69134 Ecully, France
3
School of Aerospace and Mechanical Engineering, Korea Aerospace University, 100 Hanggongdae gil, Hwajeon-dong 412-791, Korea
4
Faculty of Engineering and the Built Environment, 4140, John Orr Building PO Box 524, Auckland Park 2006, South Africa
*
Author to whom correspondence should be addressed.
Lubricants 2020, 8(5), 55; https://doi.org/10.3390/lubricants8050055
Received: 3 April 2020 / Revised: 21 April 2020 / Accepted: 25 April 2020 / Published: 13 May 2020
(This article belongs to the Special Issue Tribology of Biomaterials)
Under tribological conditions in aqueous medium, the contact of materials does involve some degradations of materials. Especially friction under small reciprocal displacement, i.e., fretting corrosion, is occurring; this topic has been highlighted since the 80′s regarding hip implants. Hip prosthesis is assembled from three parts: femoral stem, neck and head. Fretting corrosion or friction corrosion between metallic parts first involves some degradation of the oxides layers. This step is governed by mechanics and it is related to some few minutes. Afterwards the corrosion occurrs enhanced by mechanical degradation. As well focused some oxides and some metallic ions are related to biocompatibility issues. Some strategies are available in order to avoid metal against metal friction and/or fretting. Some hard coatings and some smooth coatings were investigated. The first one is diamond-like carbon (DLC), and the second is a polyetheretherketone (PEEK), polymeric one. The investigations were focused on fretting corrosion solicitations of Ti-6Al-4V vs. Ti-6Al-4V + coating. DLC as a coating delays the corrosion degradation. The PEEK coating does not promote any corrosion degradation of the metallic counter part and more generally any wear. View Full-Text
Keywords: tribocorrosion; coatings; metallic biomaterials; PEEK; DLC tribocorrosion; coatings; metallic biomaterials; PEEK; DLC
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MDPI and ACS Style

Geringer, J.; Fridrici, V.; Ding, H.; Kim, K.; Taylor, T.; Semetse, L.; Ehsani-Majd, S.; Olubambi, P.; Fontaine, J.; Kapsa, P. Some Hard or Soft Coatings to Protect the Pristine Biometallic Substrates under Fretting-Corrosion Solicitations: What Should Be the Best Solution? Lubricants 2020, 8, 55. https://doi.org/10.3390/lubricants8050055

AMA Style

Geringer J, Fridrici V, Ding H, Kim K, Taylor T, Semetse L, Ehsani-Majd S, Olubambi P, Fontaine J, Kapsa P. Some Hard or Soft Coatings to Protect the Pristine Biometallic Substrates under Fretting-Corrosion Solicitations: What Should Be the Best Solution? Lubricants. 2020; 8(5):55. https://doi.org/10.3390/lubricants8050055

Chicago/Turabian Style

Geringer, Jean, Vincent Fridrici, Haohao Ding, Kyungmok Kim, T. Taylor, Lerato Semetse, Sara Ehsani-Majd, Peter Olubambi, Julien Fontaine, and Philippe Kapsa. 2020. "Some Hard or Soft Coatings to Protect the Pristine Biometallic Substrates under Fretting-Corrosion Solicitations: What Should Be the Best Solution?" Lubricants 8, no. 5: 55. https://doi.org/10.3390/lubricants8050055

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