Infrared Property and Interfacial Adhesion Enhancement Utilizing Diamond-like Carbon Film
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2023-08-31 |
| Journal | Journal of the Korean Association of Defense Industry Studies |
| Authors | Heon Woong Choi |
Abstract
Section titled āAbstractāWe conducted a study involving the preparation of two types of diamond-like carbon(DLC) film-coated germanium(Ge), a representative material in infrared systems, with the aim of investigating both interface adhesion a nd i nfrared properties o f the DLC film. One set of s amples c omprised DLC-coated G e with a silicon(Si) interlayer, while the other set consisted of DLC-coated Ge without a Si interlayer. The Fourier-transform infrared(FTIR) spectrum of the DLC-coated Ge with a Si interlayer exhibited maximum transmission exceeding 90% within the wavelength range of 800-1400cm-1. Furthermore, it was observed that the adhesion of the DLC-coated Ge substrate with a Si interlayer was notably stronger compared to the DLC-coated Ge samples lacking the Si interlayer. The interface structure between the DLC film and the Si intermediate layer was throughly examined using transmission electron microscopy(TEM). The amorphous carbon structure of the DLC film exhibited robust adherence to the amorphous carbon Si intermediate layer, which consequently by acoustic emission scratch testing. Consequently, this results strongly underscore the potential of DLC films for applications as infrared window coatings.