Next Article in Journal
Effect of Modified Hexagonal Boron Nitride Nanoparticles on the Emulsion Stability, Viscosity and Electrochemical Behavior of Nanostructured Acrylic Coatings for the Corrosion Protection of AISI 304 Stainless Steel
Previous Article in Journal
Comparison of the Clinical Results of Identically Designed Total Knee Prostheses with Different Surface Roughnesses
Previous Article in Special Issue
Damage Assessment and Fracture Resistance of Functionally Graded Advanced Thermal Barrier Coating Systems: Experimental and Analytical Modeling Approach
Open AccessFeature PaperArticle

Experimental Study of the Influence of Deposition of Multilayer CrN/CrCN PVD Coating on Austenitic Steel on Resistance to Cavitation Erosion

1
Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdansk, Poland
2
Faculty of Technology and Education, Koszalin University of Technology, Śniadeckich 2, 75-453 Koszalin, Poland
3
Faculty of Mechanical Engineering, Gdańsk University of Technology, 11/12 Narutowicza, 80-233 Gdansk, Poland
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(5), 487; https://doi.org/10.3390/coatings10050487
Received: 12 March 2020 / Revised: 1 April 2020 / Accepted: 15 May 2020 / Published: 19 May 2020
(This article belongs to the Special Issue Erosion of Nanostructured Coatings)
The impact of deposition of multilayer CrN/CrCN coating on X6CrNiTi18-10 steel by means of the PVD (physical vapour deposition) method on resistance to cavitation erosion has been investigated. Cavitation tests were performed using a cavitation chamber with a barricade system at the inlet pressure p1 = 600 kPa and the outlet pressure p2 = 123 kPa. Deposition of CrN/CrCN coating allowed increasing duration of the incubation period and decreasing cumulative volume loss until 500 min of exposure. The erosion of the CrN/CrCN–X6CrNiTi18-10 system begins with the removal of microdroplets from the coating surface and surface undulation. The surface undulation increases with the exposure time leading to coating fracture in a brittle mode. Initiation sites of cracks were located inside the PVD coating. Measurements of surface roughness illustrate uneven degradation of the exposed surface and the location of slight and severe erosion zones. The Ra parameters obtained for the CrN/CrCN–X6CrNiTi18-10 system and X6CrNiTi18-10 steel after 180 min of erosion were comparable. An elongation of erosion test up to 600 min resulted in a higher increase in surface roughness of the CrN/CrCN coating–X6CrNiTi18-10 steel system in comparison to that of X6CrNiTi18-10 steel. With increasing exposition time, the rate of increase of the surface roughness decreased due to overlapping damage. View Full-Text
Keywords: PVD coating; multilayer coating; CrN/CrCN coating; cavitation erosion; fracture PVD coating; multilayer coating; CrN/CrCN coating; cavitation erosion; fracture
Show Figures

Figure 1

MDPI and ACS Style

Krella, A.K.; Czyzniewski, A.; Gilewicz, A.; Gajowiec, G. Experimental Study of the Influence of Deposition of Multilayer CrN/CrCN PVD Coating on Austenitic Steel on Resistance to Cavitation Erosion. Coatings 2020, 10, 487.

Show more citation formats Show less citations formats
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
Search more from Scilit
 
Search
Back to TopTop