Fatigue performance of DIARC® plasma coated bonded metal specimens |
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| Affiliation: | 1. Aalto University, School of Engineering, Department of Mechanical Engineering, P.O. Box 14300, FI-00076 Aalto, Finland;2. Tampere University of Technology, Laboratory of Materials Science, P.O. Box 589, FI-33101 Tampere, Finland;1. Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan;2. Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan;1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2. University of Chinese Academy of Sciences, Beijing 100039, China;1. Dipartimento di Fisica, Università degli Studi di Cagliari, S.P.n°8 Km 0, 700, I-09042 Monserrato, CA, ITALY;2. Dipartimento di Scienze Chimiche e Geologiche and INSTM, Università di Cagliari, S.P.n°8 Km 0, 700, I-09042 Monserrato (CA) ITALY;1. School of Space and Environment, Beihang University, Beijing 100191, PR China;2. Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, PR China;1. U?ak University, Faculty of Engineering, Department of Chemical Engineering, 64200, U?ak, Turkey;2. Afyon Kocatepe University, Faculty of Technology, Department of Metallurgical and Materials Engineering, 03200, Afyonkarahisar, Turkey |
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| 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. |
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| Keywords: | DIARC plasma coating Surface preparation for metal bonding Fatigue testing |
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