The Durability of Adhesively-Bonded Titanium: Performance of Plasma-Sprayed Polymeric Coating Pretreatments

Non-solution and electrochemical treatments in preparation for adhesive bonding of titanium have been studied. Polymeric materials, LaRC TPI-2000 TM , LaRC PETI-5 TM , and Aurum TM polyimides were deposited onto titanium-6Al-4V surfaces via plasma spraying. The plasma-sprayed surfaces were character...

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Bibliographic Details
Published in:	The Journal of adhesion Vol. 65; no. 1-4; pp. 217 - 238
Main Authors:	Dillard, J. G., Jackson, F. R., Holmes, B. L., Aartun, L., Parvatareddy, H., Dillard, D. A., Zatorski, R.
Format:	Journal Article
Language:	English
Published:	Basingstoke Taylor & Francis Group 01-01-1998 Taylor and Francis
Subjects:	Ageing Applied sciences durability Exact sciences and technology failure surface characterization Physical properties Plasma-sprayed polyimide primer/coating polyimide adhesive Polymer industry, paints, wood Properties and testing solid state NMR Technology of polymers titanium-6Al-4V wedge-type specimen Polyimide Scanning electron microscopy Fracture mechanics Diffuse reflection Durability NMR spectrometry Surface analysis Titanium base alloys Surface treatment Crack propagation Infrared spectrometry Solid state Weathering Plasma spraying Surface sizing Carbon 13
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Summary:	Non-solution and electrochemical treatments in preparation for adhesive bonding of titanium have been studied. Polymeric materials, LaRC TPI-2000 TM , LaRC PETI-5 TM , and Aurum TM polyimides were deposited onto titanium-6Al-4V surfaces via plasma spraying. The plasma-sprayed surfaces were characterized using infrared, solid state NMR, and surface-sensitive analytical methods. The chemical nature of plasma-sprayed polymers is equivalent to that for powdered materials. The durability of titanium, adhesively bonded with a polyimide adhesive, was investigated by immersing wedge-type specimens in boiling water. Crack length and the mode of failure were used to assess durability. The determination of the failure mode was accomplished using surface-sensitive analytical methods. Surface treatments using plasma-sprayed LaRC-type polyimides result in good durability as evidenced by minimal crack growth for wedge specimens and by failure in the adhesive (cohesive failure).
ISSN:	0021-8464 1563-518X 1545-5823
DOI:	10.1080/00218469808012247