Corrosion investigation of rapidly solidified Cu- Al-Ni alloy in NaCl solution

Znanstveni rad - Izvorni znanstveni rad

• Autor: Ladislav Vrsalović
• Autor: Ines Garvanović
• Autor: Stjepan Kožuh
• Autor: Borut Kosec
• Autor: Milan Bizjak
• Autor: Ivana Ivanić
• Autor: Senka Gudić
• Autor: Mirko Gojić
• Urednik: Miomir Pavlović
• Urednik: Miroslav Pavlović
• Autorova ustanova: Sveučilište u Splitu; Kemijsko-tehnološki fakultet
• Autorova ustanova: Sveučilište u Zagrebu; Metalurški fakultet
• Znanstveno / umjetničko područje, polje i grana: TEHNIČKE ZNANOSTI; Kemijsko inženjerstvo
• Znanstveno / umjetničko područje, polje i grana: TEHNIČKE ZNANOSTI; Metalurgija

Sažetak (engleski)

The corrosion behavior of the Cu-Al-Ni alloy ribbons obtained by rapid solidification was investigated in 0.9% NaCl solution (pH 7.4) at temperatures of 24, 37 and 50 ºC. Measurements have been performed by electrochemical methods such as monitoring the open circuit potential, linear and potentiodynamic polarization methods. The influence of chloride ions concentration on corrosion of Cu-Al-Ni ribbons has also been investigated in 0.1% and 1.5% NaCl solution. Results of the investigations have shown that an increase in chloride concentration and electrolyte temperature leads to increase the corrosion current density and decrease the polarization resistance values which mean higher corrosion attack on Cu-Al-Ni alloy. Microscopic images have shown significant pitting corrosion damages on the Cu-Al-Ni alloy surface. Increasing the electrolyte temperature increases the surface damages of the electrode due to more intense corrosion. SEM surface images of Cu-Al- Ni electrodes have confirmed that with the elevation of chloride concentration a more intense corrosion attack occurs. EDS surface analysis indicated dominant percentage of copper, chlorine and oxygen on the surface, indicating the formation of copper oxide and chloride as the major corrosion products on the surface. The presence of a small percentage of aluminum indicates its distribution in the form of aluminum oxide and chloride in the surface layer.

• Ključne riječi (engleski): Cu-Al-Ni alloy; melt spinning method; corrosion; electrochemical methods
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov zbornika: Proceedings of XX YuCorr International Conference
• Brojčani podaci: str. 229-237
• ISBN: 978-86-82343-26-4
• URN:NBN: urn:nbn:hr:115:117236
• Datum objave publikacije: 2018
• Projekt: Šifra: IP-2014-09-3405; Naziv (hrvatski): Dizajniranje mikrostrukture i funkcionalnih svojstava legura s prisjetljivosti oblika na bazi bakra; Kratica: DMFP-CuSMA; Voditelj: Mirko Gojić; Pravna nadležnost: Hrvatska; Financijer: HRZZ; Linija financiranja: IP
• Skup: Naziv: XX Yucorr International Conference; Lokacija: Tara, Srbija; Datum početka: 2018-05-21; Datum završetka: 2018-05-24; Vrsta izlaganja: Postersko izlaganje
• URL dokumenta: http://bib.irb.hr/964572
• Vrsta resursa: Tekst
• Izdavač: Serbian Society of Corrosion and Materials Protection
• Mjesto izdavanja: Beograd
• Prava pristupa: Otvoreni pristup
• Datum i vrijeme pohrane: 2019-07-09 10:16:18