Electrochemical and DFT studies of laser-alloyed TiB2/TiC/Al coatings on aluminium alloy

Ravnikar, Dunja (author), Rajamure, Ravi Shanker (author), Trdan, Uroš (author), Dahotre, Narendra B. (author), Grum, Janez (author)

Microstructural and corrosion characteristic of laser-alloyed TiB2/TiC/Al composite coatings on 6082-T651 aluminium substrate were investigated. Density functional theory was used to study the chemical bonding of TiC and TiB2. The results confirmed a compact TiB2/TiC/Al-coating with low porosity, without any cracks and with good long-term stability against corrosion. Moreover, EIS and CP results confirmed enhanced corrosion resistance of laser-alloyed TiB2/TiC/Al coatings, with lower coating capacitance, increased polarisation resistance and reduced corrosion current density compared to the Al 6082 substrate. Although, all the laser-alloyed coatings experienced pitting attack, the intensity of pitting attack was substantially reduced compared to the substrate material.

• Language: English
• Keywords: laser coating of aluminum alloy EN AW 6082-T651, TiC-TiB2, pitting corrosion
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Author Accepted Manuscript
• Submitted for review: 03.01.2017
• Article acceptance date: 16.02.2018
• Publication date: 20.02.2018
• Year: 2018
• Number of pages: Str. 18-27
• Numbering: Vol. 136
• PID: 20.500.12556/RUL-127262
• UDC: 669.715.018.8(045)
• ISSN on article: 0010-938X
• DOI: 10.1016/j.corsci.2018.02.028
• COBISS.SI-ID: 15930395
• Publication date in RUL: 31.05.2021

Record is a part of a journal

• Title: Corrosion science
• Shortened title: Corros. sci.
• Publisher: Pergamon Press
• ISSN: 0010-938X
• COBISS.SI-ID: 5881607

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
• Licensing start date: 15.05.2018

Secondary language

• Language: Slovenian
• Keywords: lasersko oplastenje aluminijeve zlitine EN AW 6082-T651, TiC-TiB2, jamičasta korozija

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0270
• Name: Proizvodni sistemi, laserske tehnologije in spajanje materialov