IN VITRO STUDY, CORROSION, and THERMAL OXIDATION BEHAVIOR of WIRE-SHAPED NITISN SHAPE MEMORY ALLOY

Qader I. N., Kok M., Çırak Z. D., Pekdemir M. E., Saydam S., Aydoğdu Y.

Surface Review and Letters, vol.28, no.7, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 7
  • Publication Date: 2021
  • Doi Number: 10.1142/s0218625x21500670
  • Journal Name: Surface Review and Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Metadex, Civil Engineering Abstracts
  • Keywords: NiTiSn, wire-shaped shape memory alloy, oxidation, TiO2, corrosivity, in vitro, BIOCOMPATIBILITY, TITANIUM, FILMS, RESISTANCE
  • Gazi University Affiliated: Yes

Abstract

© 2021 World Scientific Publishing Company.The development of NiTi-based shape memory alloys (SMAs) for some medical applications has been limited by releasing Ni element into the organic tissue. In this study, Ni47Ti50Sn3-wire (at.%) SMA was produced using the arc-melting technique, and the alloy was subjected to non-isothermal processes. Some characteristics of the alloys, such as oxidation behavior, corrosivity, and in vitro study in simulated body fluid and physiological solution at body temperature, were investigated. The corrosion rate of the as-casted alloy was lower than the equiatomic-NiTi alloy found in the literature. The estimated ICP-MS results showed that the release of alloying constituents into the solutions is in accordance with the standards.