Tribological Behaviour of Ceramic Coating
DOI:
https://doi.org/10.37255/jme.v4i2pp090-092Keywords:
Titania (TiO2), High Velocity Oxy-Fuel (HVOF) Spraying, Sliding wearAbstract
Titania or titanium di-Oxide (TiO2) is a multi functional ceramic material having many potential applications, such as medical technology, photo catalysis and wear protection. In this study, Titania and TiO2+10% SiC coating was deposited on titanium substrate by High Velocity Oxy-Fuel (HVOF) spraying. The Microhardness and porosity of the coatings was measured using Vickers microhardness tester on coating cross section and bond strength was measured as per ASTM C633. The XRD analysis identifies the rutile as major phase and presence of secondary phases in TiO2-SiC coating. The sliding wear behavior of substrate, coatings was evaluated using Pin-on-disk apparatus as per ASTM G99 standard. Worn surface morphologies were analysed by SEM and found that the major wear mechanisms are plastic deformation, brittle fracture and micro cutting.
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References
Lima R S and Marple B R (2008), “Process–property– performance relationships for titanium dioxide coatings engineered from nanostructured and conventional powders”, Materials & Design, Vol. 29(9), 1845-1855.
Kim G E and Walker J (2007), “Successful application of nanostructured titanium dioxide coating for high-pressure acidleach application”, Journal of thermal spray technology, Vol. 16(1), 34-39.
Lima R S and Marple B R (2003), “Optimized HVOF titania coatings”, Journal of thermal spray technology, Vol. 12(3), 360- 369.
Alavi S H, Baharvandi H R and Abdizadeh H (2012), “Densification and mechanical properties of TiB2-SiC nanocomposite with silicon carbide as a sintering aid”, International Journal of Modern Physics,Vol.5,598-606.
Mao Y S, Wang L, Chen K M, Wang S Q and Cui X H (2013), “Tribo-layer and its role in dry sliding wear of Ti–6Al–4V alloy”, Wear, Vol. 297(1-2), 1032-1039.
Zhang Q Y, Zhou Y, Wang L, Cui X H and Wang S Q (2016), “Investigation on tribo-layers and their function of a titanium alloy during dry sliding”, Tribology International, Vol. 94, 541- 549.
Ramachandran C S, Balasubramanian V, Ananthapadmanabhan P V and Viswabaskaran V (2012), “Understanding the dry sliding wear behaviour of atmospheric plasma-sprayed rare earth oxide coatings”, Materials & Design, Vol.39, 234-252.