Fatigue performance of DIARC® plasma coated bonded metal specimens

Jarkko Aakkula*, Jarno Jokinen, Olli Saarela

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The fatigue performance of DIARC® vacuum plasma surface treatment for titanium, stainless-steel and aluminium structural bonding was tested with double lap shear test specimens. In the metal surface treatment, a nanoscale DIARC Bindo coating is deposited on the substrates in a vacuum chamber. The DIARC-treated surface is ready for bonding and does not require any additional treatments, chemicals or primers containing hazardous CrVI chromium. Finite element method was used in analysing the test specimens. The tests were performed at room temperature dry and at room temperature after hot and wet exposure. The specimens were cycled with constant amplitude loading until failure or until 10 million cycles. The fatigue performance of the DIARC coating was found acceptable. There were no interfacial failures between the DIARC coating and metal or between the DIARC coating and adhesive. The residual strengths of all specimens after 10 million cycles were comparable to the static strength.

Original languageEnglish
Pages (from-to)83-94
Number of pages12
JournalInternational Journal of Adhesion and Adhesives
Volume79
DOIs
Publication statusPublished - 1 Dec 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • DIARC plasma coating
  • Fatigue testing
  • Surface preparation for metal bonding

Fingerprint Dive into the research topics of 'Fatigue performance of DIARC<sup>®</sup> plasma coated bonded metal specimens'. Together they form a unique fingerprint.

Cite this