Picosecond acoustics versus tape adhesion test: Confrontation on a series of similar samples with a variable adhesion
نویسندگان
چکیده
A large number of methods have been developed to characterize the adhesion a thin film substrate. Among them, tape test is still one most popular methods. Acoustic waves and especially ultra-high frequency acoustic are also sensitive defects as they affect way reflected at such an interface. In this work, we first prepare series identical thin-film samples with variable interface between its To modulate some samples, ultrathin gold layer deposited on substrate before sputtering. Si+ ion implantation used reinforce locally adhesion. The then characterized using two much different techniques: picosecond acoustics (PA) for measuring thickness reflection coefficient (R) independent evaluation through peeled area (P). On series, R found vary from ?0.46 expected value perfectly bonded Ni/Si almost ?0.83 not far ?1 which corresponds delamination. An excellent correlation P: high |R| easily off P large. That work demonstrates capability PA perform in totally non-destructive manner furthermore locally.
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ژورنال
عنوان ژورنال: Surface & Coatings Technology
سال: 2022
ISSN: ['1879-3347', '0257-8972']
DOI: https://doi.org/10.1016/j.surfcoat.2022.128926