Protective over-layer coating preventing cracking of thin films deposited on flexible substrates

The article reports on a special over-layer which protects brittle coatings deposited on flexible substrates against cracking during bending. It is shown that the over-layer with (i) the low effective Young's modulus E⁎=E/(1−ν2) resulting in a high ratio H/E⁎≥0.1, (ii) the high elastic recovery...

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Bibliographic Details
Published in:Surface & coatings technology 2014-02, Vol.240, p.275-280
Main Authors: Musil, J., Sklenka, J., Prochazka, J.
Format: Article
Language:English
Subjects:
Applied sciences
Bending modulus
Brittleness
Coating
Corrosion
Corrosion prevention
Cracks
Cross-disciplinary physics: materials science
rheology
Deposition
Exact sciences and technology
Fracture mechanics
Magnetron sputtering
Materials science
Mechanical properties
Metals. Metallurgy
Methods of deposition of films and coatings
film growth and epitaxy
Nanocomposite coatings
Physics
Production techniques
Protective
Resistance to cracking
Surface cracking
Surface strengthening
Surface treatment
Surface treatments
Thin films
Zirconium
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Summary:The article reports on a special over-layer which protects brittle coatings deposited on flexible substrates against cracking during bending. It is shown that the over-layer with (i) the low effective Young's modulus E⁎=E/(1−ν2) resulting in a high ratio H/E⁎≥0.1, (ii) the high elastic recovery We≥60% and (iii) the compressive macrostress (σ
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2013.12.041