Maxwell, A S (2004) Comparison of coating adhesion values obtained from ASTM D4541 and ASTM C633 pull-off tests. NPL Report. DEPC-MPR 010

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Abstract

Good coating adhesion between coating and substrate is fundamental to the successful application of coatings. In many cases lack of confidence in coating adhesion is the key factor preventing their wider application. Accurate measurement of adhesion is therefore essential for greater exploitation of coatings technology. This report summarises the results obtained from two widely available pull-off adhesion tests. These are the ASTM D4541-02 portable pull-off test and the ASTM C633-01 adhesion test for thermally sprayed coatings. The two techniques were used to measure the adhesion strength of a range of different thermally sprayed and electroplated coatings. Consistent results were obtained from both test methods, however, the techniques were both found to be limited by the strength of the epoxy adhesive used to bond pull-off stubs to the coating.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	DEPC-MPR 010
Subjects:	Advanced Materials Advanced Materials > Surface Engineering
Last Modified:	02 Feb 2018 13:16
URI:	http://eprintspublications.npl.co.uk/id/eprint/3109

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