Interfaces and Adhesion

The fundamental property which often dictates the performance of a coating is its adhesion to the substrate and thus there are many techniques to measure adhesion. The choice of methods is dependent on many factors such as the mechanical properties of the coating and substrate, the interface properties, the microstructure of the coating/substrate system, residual stress, coating thickness and the intended application. Most tests aim to introduce a stable interfacial crack and make it propagate under controlled conditions and model this process to determine adhesion. The corresponding models are either stress analysis-based or energy-based. With the advent of miniature systems and very thin functional coatings, there is a need for characterization of adhesion at small length scales and some specific tests have been developed which are not appropriate for thicker coatings. Among these, indentation and scratch methods have the widest range of applicability but it is necessary to analyse the failure mechanisms before choosing an appropriate model to extract adhesion parameters. This paper reviews the main quantitative adhesion tests for coatings and highlights the tests which can be used to assess submicrometre coatings and thin films. The paper also highlights the modelling and analysis methods necessary to extract reliable adhesion properties illustrating this with examples for submicrometre coatings on silicon and architectural glass.

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“…It is very useful for qualitative assessment of hard coatings on a softer substrate (e.g. [52][53][54][55][56][57]). …”

Section: Scratch Testmentioning

confidence: 99%

Approaches to investigate delamination and interfacial toughness in coated systems: an overview

Chen¹,

Bull²

2010

J. Phys. D: Appl. Phys.

124

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“…the atomic binding forces are of importance. Hence, the type of bonding results in different interfacial binding forces, see Fig 8 [17], which may consist of valence forces or interlocking forces or both [18]. When breaking the bonds interfacial cracks occur and thus the term interfacial fracture toughness is further describing the phenomenon.…”

Section: Adhesion and Interfacial Fracture Toughnessmentioning

confidence: 99%

Improving the Efficiency of Cutting Tools through Application of Filtered Cathodic Vacuum Arc Deposition Coating Techniques: A Review

Benti

Woldeyohannes

Yigezu

2022

Advances in Materials Science and Engineering

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The challenge of enhancing cutting tool life has been dealt with by many research studies. However, this challenge seems endless with growing technological advancement which brings about incremental improvement in tool life. The objective of this review paper is focused at assessing filtered cathodic vacuum arc deposition techniques applied on cutting tools and their effect on tool efficiency. The paper particularly picks filtered cathodic vacuum arc deposition (FCVAD) among other well-identified methods of coating like the Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD). Filtered Cathodic Vacuum Arc Deposition is the state of art in the coating technology finding wide application in the electronics industry and medical industry in addition to the machining industry, which is the concern of this review paper. This review is made in order to summarize and present the various techniques of FCVAD coatings and their applications, as investigated by various researches in the area.

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“…The method has three main advantages [85,86]. Firstly, it is a low-temperature process, which can be used for deposition even on polymers which are not stable at higher temperatures.…”

Section: Ion-assisted Coatings and Radiation-enhanced Adhesionmentioning

confidence: 99%

Radiation effects in insulators

2008

Nuclear Instruments and Methods in Physics Research Section B:

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Beam Interactions with Materials 8 AtomsMy survey of radiation effects in insulators concentrates on the three main thrusts of mechanisms, materials, and applications. By mechanisms I include the processes occurring during irradiation, including defect production, amorphisation and mixing. This includes the roles of electronic excitation and of energy localisation, of charge redistribution, of surface processes like sputtering and desorption, and subsequent thermal processes. Materials must reflect new interests: the relation of the insulating oxides to oxide superconductors, and parallels between damage in organics and inorganics. Applications include cases where the radiation is the natural environment of space, the operating environment of a nuclear facility, or the controlled irradiation of an accelerator. In such applications the radiation effects are critical, and include insulator performance under radiation, and examples from erosion and lithography, adhesion, and coatings preparation.

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Interfaces and Adhesion

Cited by 11 publications

References 71 publications

Approaches to investigate delamination and interfacial toughness in coated systems: an overview

Approaches to investigate delamination and interfacial toughness in coated systems: an overview

Improving the Efficiency of Cutting Tools through Application of Filtered Cathodic Vacuum Arc Deposition Coating Techniques: A Review

Radiation effects in insulators

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