Next Article in Journal
Microstructural and Corrosion Properties of PEO Coated Zinc-Aluminized (ZA) Steel
Next Article in Special Issue
Influence of Growth Defects on the Oxidation Resistance of Sputter-Deposited TiAlN Hard Coatings
Previous Article in Journal
Chitosan-Functionalized Mg0.5Co0.5Fe2O4 Magnetic Nanoparticles Enhance Delivery of 5-Fluorouracil In Vitro
Previous Article in Special Issue
Metallurgical Soldering of Duplex CrN Coating in Contact with Aluminum Alloy
Review

Review of Growth Defects in Thin Films Prepared by PVD Techniques

1
Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
2
Interkorn d.o.o, Gančani 94, 9231 Beltinci, Slovenia
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(5), 447; https://doi.org/10.3390/coatings10050447
Received: 31 March 2020 / Revised: 21 April 2020 / Accepted: 27 April 2020 / Published: 3 May 2020
(This article belongs to the Special Issue Surface Topography Effects on Functional Properties of PVD Coatings)
The paper summarizes current knowledge of growth defects in physical vapor deposition (PVD) coatings. A detailed historical overview is followed by a description of the types and evolution of growth defects. Growth defects are microscopic imperfections in the coating microstructure. They are most commonly formed by overgrowing of the topographical imperfections (pits, asperities) on the substrate surface or the foreign particles of different origins (dust, debris, flakes). Such foreign particles are not only those that remain on the substrate surface after wet cleaning procedure, but also the ones that are generated during ion etching and deposition processes. Although the origin of seed particles from external pretreatment of substrate is similar to all PVD coatings, the influence of ion etching and deposition techniques is rather different. Therefore, special emphasis is given on the description of the processes that take place during ion etching of substrates and the deposition of coating. The effect of growth defects on the functional properties of PVD coatings is described in the last section. How defects affect the quality of optical coatings, thin layers for semiconductor devices, as well as wear, corrosion, and oxidation resistant coatings is explained. The effect of growth defects on the permeation and wettability of the coatings is also shortly described. View Full-Text
Keywords: hard coating; growth defect; nodular defect; pinhole; flake; ion etching; focused ion beam (FIB); scanning electron microscopy (SEM); droplet hard coating; growth defect; nodular defect; pinhole; flake; ion etching; focused ion beam (FIB); scanning electron microscopy (SEM); droplet
Show Figures

Figure 1

MDPI and ACS Style

Panjan, P.; Drnovšek, A.; Gselman, P.; Čekada, M.; Panjan, M. Review of Growth Defects in Thin Films Prepared by PVD Techniques. Coatings 2020, 10, 447. https://doi.org/10.3390/coatings10050447

AMA Style

Panjan P, Drnovšek A, Gselman P, Čekada M, Panjan M. Review of Growth Defects in Thin Films Prepared by PVD Techniques. Coatings. 2020; 10(5):447. https://doi.org/10.3390/coatings10050447

Chicago/Turabian Style

Panjan, Peter, Aljaž Drnovšek, Peter Gselman, Miha Čekada, and Matjaž Panjan. 2020. "Review of Growth Defects in Thin Films Prepared by PVD Techniques" Coatings 10, no. 5: 447. https://doi.org/10.3390/coatings10050447

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop