Comparison of Solid Particle Erosive Wear Rate At Room Temperature of Flexicord Flame Sprayed Different Oxide Coatings

Yıl 2018, , 1477 - 1481, 01.10.2018

Kudret Güzel , Ekrem Altuncu , Sinan Fidan

https://doi.org/10.16984/saufenbilder.408198

Öz

Flame spray technology is basic member of the thermal spray
coating family. Higher cost-effective coatings can be produced at higher speeds
with new flame spray equipments which developed in recent years. The Flexicord flame
spray method developed in this direction offers many advantages. A wide variety
of ceramic coatings can be deposited on metallic surfaces with this spray
methods in the face of wear-induced problems. In this study, solid particle
erosion rates and wear behaviors of different oxide (Al₂O₃,
MgO-Zr₂O₃, Al₂O₃-MgO
based coatings have been studied comparatively with respect to ASTM G76 standard.
Spinel based coatings between the oxide based coatings exhibited superior wear
resistance and significantly lower mass loss than the others. Due to the
fragile nature of the ceramic coatings, the erosive wear rate is increased by
crack growth formation related with the porosity of coating. Due to the
accelerated solid particle impacting at high impact angles, wear rate is
highest.

Anahtar Kelimeler

Thermal spray, Flame spraying, Solid particle erosion, Microcracks.

Kaynakça

• 1 .Cernuschi, F., Guardamagna, C., Capelli, S., Lorenzoni, L., Mack, D.E., Moscatelli, A., Solid particle erosion of standard and advanced thermal barrier coatings, 348-349, 43–51, 2016.
• 2. Clarke DR., Oechsner M., Padture NP. Thermal-barrier coatings for more efficient gas-turbine engines, 37,891–8, 2012.
• 3. Evans AG., Mumm DR., Hutchinson JW., Meier GH., Pettit FS., Mechanisms controlling the durability of thermal barrier coatings, Prog Mater Sci, 46, 505–53, 2001.
• 4. Pawlowski, L., Wiley, J., The Science and Engineering of Thermal Spray Coatings, New York, 1995.
• 5. Fauchais, P., Phys, J., Understanding plasma spraying, 86–108, 2004
• 6. Modeling and Control of High-Velocity Oxygen-Fuel (HVOF) Thermal Spray A Tutorial Review Mingheng Li and Panagiotis D. Christofides; Journal of Thermal Spray Technology, 753-768, 2009.
• 7. Lima, R.S., Moreau, C., Marple, B.R., HVOF-Sprayed Coatings Engineered from Mixtures of Nanostructured and Submicron Al2O3-TiO2 Powders, An Enhanced Wear Performance, J. Therm. Spray Technol., 866-872, 2007.
• 8. ASTM G76-13, Standard test method for conducting erosion test by solıd particle ımpingement using gas jet, 2013.