Nanoporous stainless steel materials for body implants—review of synthesizing procedures

Benčina, Metka (author), Junkar, Ita (author), Vesel, Alenka (author), Mozetič, Miran (author), Iglič, Aleš (author)

Despite the inadequate biocompatibility, medical-grade stainless steel materials have been used as body implants for decades. The desired biological response of surfaces to specific applications in the body is a highly challenging task, and usually not all the requirements of a biomaterial can be achieved. In recent years, nanostructured surfaces have shown intriguing results as cell selectivity can be achieved by specific surface nanofeatures. Nanoporous structures can be fabricated by anodic oxidation, which has been widely studied for titanium and its alloys, while no systematic studies are so far available for stainless steel (SS) materials. This paper reviews the current state of the art in the anodisation of SS; correlations between the parameters of anodic oxidation and the surface morphology are drawn. The results reported by various authors are scattered because of a variety of experimental configurations. A linear correlation between the pores’ diameter anodisation voltage was deduced, while no correlation with other processing parameters was found obvious. The analyses of available data indicated a lack of systematic experiments, which are recommended to understand the kinetics of pore formation and develop techniques for optimal biocompatibility of stainless steel.

• Language: English
• Keywords: stainless steel, anodisation, nanoporous morphology
• Work type: Article
• Typology: 1.02 - Review Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: 15 str.
• Numbering: Vol. 12, iss. 17, art. 2924
• PID: 20.500.12556/RUL-155613
• UDC: 620.1/.2
• ISSN on article: 2079-4991
• DOI: 10.3390/nano12172924
• COBISS.SI-ID: 122161155
• Publication date in RUL: 08.04.2024

Record is a part of a journal

• Title: Nanomaterials
• Shortened title: Nanomaterials
• Publisher: MDPI AG
• ISSN: 2079-4991
• COBISS.SI-ID: 523286297

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: J3-3074
• Name: Inovativni postopki obdelave površin za napredne lastnosti medicinskega jekla

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0082
• Name: Tankoplastne strukture in plazemsko inženirstvo površin