Study of corrosion in biocompatible metals for implants: A review

High requirements in biomedical applications are yet to be met, equally in joint and bone substitution and the healing and renewal of bone weaknesses. The compatibility with the human body is the main precondition for the choice of biomaterials, which should thus have some significant properties tha...

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Bibliographic Details
Published in:	Journal of alloys and compounds 2017-04, Vol.701, p.698-715
Main Authors:	Manam, N.S., Harun, W.S.W., Shri, D.N.A., Ghani, S.A.C., Kurniawan, T., Ismail, M.H., Ibrahim, M.H.I.
Format:	Article
Language:	eng
Subjects:	Alloy steels Biocompatibility Biocompatible metals Biomedical materials Ceramics Chromium base alloys Chromium steels Cobalt base alloys Composite materials Corrosion resistance Corrosion resistant alloys Corrosion resistant steels Corrosion tests Corrosive wear Implantable materials Materials selection Metals Polymer matrix composites Surgical implants Titanium base alloys Transplants & implants Wear resistance
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Summary:	High requirements in biomedical applications are yet to be met, equally in joint and bone substitution and the healing and renewal of bone weaknesses. The compatibility with the human body is the main precondition for the choice of biomaterials, which should thus have some significant properties that will be durable for use in the body without rejection. This paper concentrates, especially, on biocompatible metals, although there are also biomaterials made of polymers, ceramics, and composite materials. Considerations in selecting materials for biomedical applications such as biocompatibility, the high corrosion and wear resistance, and osseointegration are discussed. This paper reviews the applications of three main types of biocompatible metal, namely, stainless steels, cobalt-chromium alloys, and titanium and its alloys. The corrosion resistance of each alloy is in focus. It can be confidently declared that biocompatible metals will continue to be used as biomaterials in the future with further improvements and new revolutionary bio-functionalities in the use of metals. •Stainless steels, cobalt-chromium alloys, & titanium and its alloys.•For orthopaedic implants, cardiovascular appliances, and dentistry purposes.•Reactions between tissues and material surfaces should be well understood.•The corrosion performances of these three alloys are systematically discussed.•Biocompatible metals will be further improved toward biodegradable implants.
ISSN:	0925-8388 1873-4669