Detail publikace

Formation mechanism of biocompatible fluoride conversion coating on AZ31 magnesium alloy

DRÁBIKOVÁ, J. ZMRZLÝ, M. WASSERBAUER, J.

Originální název

Typ

abstrakt

Jazyk

angličtina

Originální abstrakt

Magnesium alloys are characterized by high strength to weight ratio and vibration absorbance, but the main disadvantage, limiting their usage in engineering and medical fields, is magnesium high corrosion rate. Several methods were developed to improve corrosion resistivity of magnesium alloys. This study focuses on improving corrosion resistance of AZ31 magnesium alloy for biomedical applications by conversion coating. Biocompatible fluoride conversion coating was prepared by immersion of AZ31 magnesium alloy in molten Na[BF4] salt kept at 693 K. Dependence of conversion coating growth on immersion time was evaluated, focusing on the coating thickness and compactness. Mechanism of fluoride conversion coating forming was studied in air-free atmosphere. The experiments were carried out to determine if the coating formation was controlled by diffusion or by chemical reaction of the magnesium alloy and the melt. Diffusion process seems to be controlling the coating formation. It was shown that oxidizing agent in this process is boron which is reduced from BIII to B0.

Klíčová slova

Magnesium alloys, AZ31, biocompatible fluoride conversion coating.

Autoři

DRÁBIKOVÁ, J.; ZMRZLÝ, M.; WASSERBAUER, J.

Vydáno

31. 8. 2015

Nakladatel

Materials Research Society of Serbia

Místo

Belgrade

ISBN

978-86-919111-0-2

Kniha

Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015

Edice

Dragan P. Uskoković, Velimir R. Radmilović

Strany od

Strany do

Strany počet

102

BibTex

@misc{BUT120174,
  author="Juliána {Drábiková} and Martin {Zmrzlý} and Jaromír {Wasserbauer}",
  title="Formation mechanism of biocompatible fluoride conversion coating on AZ31 magnesium alloy",
  booktitle="Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015",
  year="2015",
  series="Dragan P. Uskoković, Velimir R. Radmilović",
  pages="88--88",
  publisher="Materials Research Society of Serbia",
  address="Belgrade",
  isbn="978-86-919111-0-2",
  note="abstract"
}