Test for coating adhesion on flat substrates: a technical note

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41607

Title: Test for coating adhesion on flat substrates: a technical note
Author(s): Leigh, Sang Ha; Berndt, Christopher C.
Abstract: The standard tensile adhesion test (TAT), ASTM C633, has been modified to perform multiple tests on flat and wide substrates. The TAT geometry, which specifies a 1-in. (25.4-mm)-diameter cylindrical substrate, has been used as the pull-off bar. Two renditions of this test were implemented and the Weibull moduli and characteristic stresses for both test methods obtained. The modified TAT, termed as the single-bar (SB) method, yields a higher Weibull modulus and characteristic strength than the other method, which is termed the double-bar (DB) method. It is believed that the different test results between the two methods arise from different stress distributions near the interface of the coating and substrate.
Publication type: Journal article
Source: Journal of Thermal Spray Technology, Vol. 3, no. 2 (Jun 1994), pp. 184-190
Publication year: 1994
Keyword(s): Adhesion; Bond strength materials; Coatings; DB; Double bar method; Flat substrates; Interfaces materials; Single bar method; Stress concentration; Substrates; TAT; Tensile adhesion test; Tensile testing; Weibull distribution
Publisher: Springer
ISSN: 1059-9630
Publisher URL: http://dx.doi.org/10.1007/BF02648276
Peer reviewed