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Corrosion on polished and laser-textured surfaces of an Fe-Mn biodegradable alloy
ID Hočevar, Matej (Author), ID Donik, Črtomir (Author), ID Paulin, Irena (Author), ID Kocijan, Aleksandra (Author), ID Tehovnik, Franc (Author), ID Burja, Jaka (Author), ID Gregorčič, Peter (Author), ID Godec, Matjaž (Author)

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PID: 20.500.12556/rul/6c3d3f95-1d12-4f0d-bf53-27fa740c6c54

Abstract
Fe-based biodegradable alloys such as Fe-Mn are interesting for biodegradable implants; however, their corrosion rate for such applications is too low. Here, nanosecond-laser surface texturing is applied as a successful surface treatment for increasing the degradation rate of an Fe-Mn alloy. Laser texturing increases the surface area by increasing the surface porosity and generating a super-hydrophilic surface. Electrochemistry tests revealed that the laser-textured samples have a higher corrosion rate than a polished sample, thus enhancing the biodegradability of the Fe-Mn alloy. EDS analyses revealed a significantly higher content of Mn on the surface in the oxidized layer compared to the bulk Fe-Mn composition, which is one of the reasons for the increased corrosion rate. This work demonstrates the potential of laser-treated surfaces of biodegradable metals for biomedical applications.

Language:English
Keywords:Fe-Mn alloy, laser texturing, corrosion, biodegradable, EDS analyses
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2017
Number of pages:Str. 1037-1041
Numbering:Letn. 51, št. 6
PID:20.500.12556/RUL-99022 This link opens in a new window
UDC:620.1/.2(045)
ISSN on article:1580-2949
DOI:10.17222/mit.2017.140 This link opens in a new window
COBISS.SI-ID:15804187 This link opens in a new window
Publication date in RUL:14.02.2018
Views:917
Downloads:713
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1580-2949
COBISS.SI-ID:106193664 This link opens in a new window

Secondary language

Language:Slovenian
Title:Primerjava korozijskih lastnosti polirane in lasersko teksturirane površine biorazgradljive zlitine Fe-Mn
Abstract:
Biološko razgradljive zlitine, kot so na primer Fe-Mn zlitine, so zanimive za uporabo v obliki biološko razgradljivih implantantov, vendar je njihova hitrost korozije za ciljne aplikacije še vedno prenizka. Lasersko teksturiranje površine predstavlja uspešno površinsko obdelavo za povečanje hitrosti razgradnje Fe-Mn zlitine. Obdelava površine z laserjem poveča delež izpostavljene površine na račun večje poroznosti, obenem pa je novonastala površina superhidrofilna. Elektrokemijski testi so pokazali, da imajo vzorci, obdelani z laserjem, večjo stopnjo korozije v primerjavi s poliranimi vzorci, s čimer se poveča biorazgradljivost zlitine Fe-Mn. EDS analiza je pokazala povečano vsebnost Mn na površini v oksidirani plasti v primerjavi s kemijsko sestavo osnovnega materiala Fe-Mn, kar predstavlja eno od razlag za povečanje hitrosti korozije. Raziskava dokazuje potencial laserske obdelave površine biološko razgradljivih kovin za biomedicinske aplikacije.

Keywords:zlitina Fe-Mn, lasersko teksturiranje, korozija, biorazgradljivost, EDS analiza

Projects

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:P2-0392
Name:Optodinamika

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:P2-0132
Name:Fizika in kemija površin kovinskih materialov

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