Advances in test and measurement of the interface adhesion and bond strengths in coating-substrate systems, emphasising blister and bulk techniques

Chen, Xiaomei; Shaw, Christopher P.; Gelman, Len; Grattan, K. T. V.

doi:10.1016/j.measurement.2019.03.026

Cited by 40 publications

(22 citation statements)

References 157 publications

(151 reference statements)

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“…In addition to the above methods, the solvent immersion test and the tape test are also utilized to evaluate the adhesion properties. Moreover, Hopkins et al [195] proposed a combination of calculations and peeling experiments to determine the interfacial characteristics of polyurethane stent coatings bonded to stainless steel. The delamination of the stent coating under dry and hydrated conditions was studied in 90 peel tests, and the measured force and peel radius were used to determine the interfacial properties.…”

Section: Frictionmentioning

confidence: 99%

A review on tribology of polymer composite coatings

et al. 2020

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Self-lubricating polymer composite coatings, with tailorable tribological and mechanical properties, have been widely employed on mechanical parts to reduce friction and wear, which saves energy and improves the overall performance for applications such as aerospace satellite parts, shafts, gears, and bushings. The addition of functional fillers can overcome the limitations of single-polymer coatings and extend the service life of the coatings by providing a combination of low friction, high wear resistance, high load bearing, high temperature resistance, and high adhesion. This paper compares the heat resistance, and the tribological and mechanical properties of common polymer matrices, as well as the categories of functional fillers that improve the coating performance. Applicable scopes, process parameters, advantages, and limitations of the preparation methods of polymer coatings are discussed in detail. The tribological properties of the composite coatings with different matrices and fillers are compared, and the lubrication mechanisms are analyzed. Fillers reduce friction by promoting the formation of transfer films or liquid shear films. Improvement of the mechanical properties of the composite coatings with fillers of different morphologies is described in terms of strengthening and toughening mechanisms, including a stress transfer mechanism, shear yielding, crack bridging, and interfacial debonding. The test and enhancement methods for the adhesion properties between the coating and substrate are discussed. The coating adhesion can be enhanced through mechanical treatment, chemical treatment, and energy treatment of the substrate. Finally, we propose the design strategies for high-performance polymer composite coating systems adapted to specific operating conditions, and the limitations of current polymer composite coating research are identified.

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Section: Frictionmentioning

confidence: 99%

A review on tribology of polymer composite coatings

et al. 2020

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“…However, it cannot be used in the adhesion is over 70–90 MPa because they need to use an adhesive. Recently, Laser Shock Adhesion Test (LASAT) 110 has been proposed to measure the adhesion strength.…”

Section: Bond Coatmentioning

confidence: 99%

Research status of bond coats in environmental barrier coatings

Zhang

Park

Zhang

et al. 2022

Int J Applied Ceramic Tech

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Bond coats in environmental barrier coatings (EBCs) prevent oxidants from penetrating the substrate, mediate the mismatch of the coefficient of thermal expansion (CTE), and improve the adhesion strength between adjacent layers. However, the development of bond coats is rarely studied systematically. In this paper, the research status of the bond coats in EBCs is introduced in detail, including the materials and deposition methods. Thus far, Si, modified‐Si, mullite, etc., have been employed as bond coats. Nevertheless, visible drawbacks of each bond coat limit their application at high‐temperatures in extreme environments. Si bond coat is easily oxidized and forms thermally grown oxides that form cracks, resulting in delamination, spallation, and failure of EBCs. In the Si–HfO2 bond coat, the optimal ratios of Si/HfO2, deposition methods, distribution of Si and HfO2, and oxidation of Si remain completely unsolved. For mullite bond coat, SiO2 suffers selective evaporation in the water vapor environment, and the ratios of the Al2O3 and SiO2 in mullite coatings restrict its service lifetime. HfSiO4 is a potential candidate acting as a next‐generation bond coat in EBCs is proposed. Furthermore, choosing reasonable deposition methods is beneficial to improve the performances of the bond coats in EBCs.

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“…Some authors have also used indentation testing, where indent is achieved on cross section, or scratch test where indenter is moved along the top coat; recently this kind of test has been modified using laser impulse to promote scratch, e.g. see the review of Chen et al [35].…”

Section: Shear Testmentioning

confidence: 99%