Tungsten-doped diamond-like carbon (DLC) coatings have been magnetron sputtered with chromium and chromium/tungsten carbide dual interlayers onto 410 stainless steel rods. The surface finish (Ra) of the substrate before deposition was 0.10–0.25 μm for a set of rough rods and 0.05 to 0.10 μm for a set of smooth rods. SEM analyses revealed different kinds of flaws in the as-deposited films (virgin coating). Two samples, one from each set, were fatigue tested under uni-axial tension to determine the effect of the substrate surface roughness on the performance of the coating. Surface analysis revealed a different response between films deposited on rough and smooth substrates. Severe failure modes such as spalling and wide cracks developed from initial film flaws in the rough substrate sample. Cracks and film spalling were also observed in the smooth substrate sample but the severity, in terms of crack dimensions and density was considerably lower than the rough substrate sample.
Skip Nav Destination
ASME 2010 International Mechanical Engineering Congress and Exposition
November 12–18, 2010
Vancouver, British Columbia, Canada
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4447-2
PROCEEDINGS PAPER
Impact of Surface Roughness on Formation of Micro Cracks and Fatigue Performance
Jeries Abou-Hanna,
Jeries Abou-Hanna
Bradley University, Peoria, IL
Search for other works by this author on:
Wael Abuzaid
Wael Abuzaid
University of Illinois Urbana-Champaign, Urbana, IL
Search for other works by this author on:
Jeries Abou-Hanna
Bradley University, Peoria, IL
Jose Lozano
Bradley University, Peoria, IL
Wael Abuzaid
University of Illinois Urbana-Champaign, Urbana, IL
Paper No:
IMECE2010-37090, pp. 1-7; 7 pages
Published Online:
April 30, 2012
Citation
Abou-Hanna, J, Lozano, J, & Abuzaid, W. "Impact of Surface Roughness on Formation of Micro Cracks and Fatigue Performance." Proceedings of the ASME 2010 International Mechanical Engineering Congress and Exposition. Volume 10: Micro and Nano Systems. Vancouver, British Columbia, Canada. November 12–18, 2010. pp. 1-7. ASME. https://doi.org/10.1115/IMECE2010-37090
Download citation file:
15
Views
Related Proceedings Papers
Related Articles
Improving Precision in Aluminum Alloy Machining Due to the Application of Diamond-Like Carbon Thin Film
J. Tribol (July,2021)
Evaluation of DLC Coatings for High-Temperature Foil Bearing Applications
J. Tribol (January,2009)
Corrosion Fatigue Crack Growth in Clad Low-Alloy Steels—Part II: Water Flow Rate Effects in High-Sulfur Plate Steel
J. Pressure Vessel Technol (August,1997)
Related Chapters
Three-Dimensional Cracked Configurations
The Stress Analysis of Cracks Handbook, Third Edition
Diamond-Like Carbon Films
Tribology of Mechanical Systems: A Guide to Present and Future Technologies
Fatigue Testing of Hydrogen-Exposed Austenitic Stainless Steel Welded Samples
International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions