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Meeting MS&T25: Materials Science & Technology
Symposium Advanced Coatings for Wear and Corrosion Protection
Presentation Title Understanding the role of particle size on thin coating formation and mechanical properties of WC-Co-Cr coatings deposited by HVAF spray
Author(s) Vijaya Lakshmi Devara, Sivakumar Govindarajan, Prasad M.J.N.V., Suresh Babu Pitchuka
On-Site Speaker (Planned) Vijaya Lakshmi Devara
Abstract Scope The thermal spraying of WC-Co-Cr coatings as an alternative to hard chrome plating faces challenges due to the need for post-machining in actual applications. To reduce the post-grinding, using fine feedstocks (≤20 μm) and depositing thin coatings by using advanced coating techniques is promising. However, the impact of initial feedstock size on the surface finish and performance of thin WC-Co-Cr coatings remains unclear. This study examines the effect of feedstock particle size on coating formation and surface roughness using high-velocity air-fuel (HVAF) spray. Three fine particle sizes were used for thin coatings (≤50 μm), and a coarse powder (deposited ~250 μm thick) was used for benchmarking. The results have shown the influence of particle size on surface roughness, change in the coefficient of friction and wear rate. The study highlights the thin and thick coating's performance along with hard chrome plating under wear and corrosion conditions.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anti-erosion coatings of silicon carbide and tantalum carbonitride nanocomposite by chemical vapor deposition
Cold-sprayed and arc-melted high-entropy alloys: wear, erosion and oxidation
Effect of chromium content on intermetallic growth and heat resistance in hot-dip aluminized ferritic stainless steels
Effects of Cu, Sn, and Mn additions on intermetallic layer growth in hot-dip aluminizing with Al-9Si bath
Enhanced wear resistance of AS41 magnesium alloy via plasma electrolytic oxidation
Enhancing Tribological and Corrosive Properties of AM60 and AZ91 Magnesium Alloys via PEO Surface Modification
Evolution of mechanical properties of PEO coated Mg rods.
Laser Cladding of CoCrCuFeNi and CoCrFeNi High-Entropy Alloys on DMR 249A Steel: Corrosion and Wear behavior
Modern corrosion and wear-resistant coatings obtained using FA-charges operating in aggressive conditions of industrial production
NbC Reinforced Ni Based Alloy Cladding by Thermal Spray Coatings and Weld Overlay Technique
Open-Air Plasma Assisted Organosilicon Coating on Automotive Aluminum Alloys for Corrosion Protection
Oxide thin films obtained by reactive sputtering for antifouling purposes
Tailored DLC Coating for Regolith Dust Mitigation
Tribocorrosion Performance of TiAlN and AlTiN Coatings on Ti6Al4V Alloy for Biomedical Applications
Understanding the role of particle size on thin coating formation and mechanical properties of WC-Co-Cr coatings deposited by HVAF spray

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