Evaluation for Adhesion Strength of High Performance Coatings by Pressure-Pushing Method and Analysis of Finite Elements

Abstract:

Pressure-pushing method of evaluation for adhesion strength of high performance coatings material and substrate is presented. This method, based on the pressure-testing device of high performance bond strength test sample patent, is one that the sample is cracking along the interface by putting the static load. According to the sample’s stress boundary conditions, the formula of the adhesion strength is given. The surface coating/substrate interface stress distribution is analyzed by using the finite element method, which provides the theory basis for the correct evaluation of coating/substrate strength. The experiments are conducted on the strength of common coating substrate materials as well. All the results show that pushed method can test the adhesion strength of high performance coatings and substrate, whose data is smaller than the international standard and A STMC633-79. And the experimental data of the pushed method are free from the influence of random factors.

• Periodical: Key Engineering Materials (Volume 499)
• Pages: 74-78
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.499.74
• Online since: January 2012
• Authors: X. Cheng, J. Yan, H.Y. Wang, Dun Wen Zuo
• Keywords: Adhesion Strength, Finite Element, Hard Coating, Pushed Load, Stress Distributions

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