Broughton, W R; Lodeiro, M J (2002) Review of surface characterisation techniques for adhesive bonding. NPL Report. MATC(A)66

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Abstract

This report examines analytical and chemical analysis techniques that can be used for surface characterisation of metals, plastics (including fibre-reinforced plastic composites) and other substrates. The report examines physical and analytical techniques available for the evaluation of surface treatments to ensure optimum bond strength and environmental resistance for specific service conditions. Techniques range from optical (or non-contact) methods to X-ray photonelectron spectroscopy (XPS). The report covers measurement of physical characteristics (surface roughness and morphology, hardness and oxide layer thickness) and chemical characteristics (functional groups and contaminants on substrate surface). Physical techniques, such as surface roughness, hardness and scratch tests, contact angle (for wettability), gloss/reflectivity, ellipsometry and colorimetry, and surface resistivity are discussed in terms of fitness for purpose for on-line inspection (i.e. quality control) and laminations. Data are provided to demonstrate the effectiveness of the techniques in differentiating between poor and good surface treatments and for assessing the maximum allowable time between surface preparations and bonding or priming the substrates. The report includes a review of key parameters and surface characteristics associated with mechanical abrasion, solvent cleaning, chemical and electrochemical (i.e. anodising), corona discharge, plasma, flame and laser surface treatments.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	MATC(A)66
Keywords:	adhesives, analytical, bonding, characterisation, chemical, surface, treatment
Subjects:	Advanced Materials Advanced Materials > Adhesives
Last Modified:	02 Feb 2018 13:17
URI:	http://eprintspublications.npl.co.uk/id/eprint/2201

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