Rigidity, adhesion and delamination of the coating in the “substrate - coating” system

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Protective coatings are widely used in all branches of production and life. The necessary qualities of coatings are provided by developing complex thin-layer compositions. The complexity of the structure of the coating also arises during operation as a result of the influence of the environment, physical fields, human factor. Many coatings are initially formed directly on the surfaces of structures with initially complex geometry. At the same time, a number of smart coatings, along with a complex structure, change their physical and mechanical properties when triggered. When choosing a coating, adhesive and technology for its application, questions arise related to determining their necessary geometric and physical parameters, assessing their mechanical properties and service life depending on the environment and physical fields, etc. This requires a reliable research tool. In the review, based on well-known publications and patents for the invention, the following are noted: methods for studying the mechanical properties of decomposable and non-decomposable coatings; methods for determining adhesion - the adhesion strength of the coating to the substrate; methods for studying the delamination of constituent elements and delamination of the coating from the substrate. Attention is focused on effective experimental and theoretical methods for assessing the mechanical properties of the coating and adhesive on flat and non-planar surfaces, as well as on some relevant results.

About the authors

Samat N. Yakupov

Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences»

Author for correspondence.
Email: tamas_86@mail.ru
ORCID iD: 0000-0003-0047-3679

PhD in Technical Sciences, senior researcher, Institute of Mechanics and Engineering

2/31 Lobachevsky St, Kazan, 420111, Russian Federation

Ruslan I. Gubaidullin

Federal Research Center «Kazan Scientific Center of Russian Academy of Sciences»

Email: ruslan_221294@mail.ru
ORCID iD: 0000-0002-8047-7962

postgraduate student, Institute of Mechanics and Engineering

2/31 Lobachevsky St, Kazan, 420111, Russian Federation


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Copyright (c) 2022 Yakupov S.N., Gubaidullin R.I.

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