Details

Autor(en) / Beteiligte

• Kumari, Renu
• Majumdar, Jyotsna Dutta

Titel

Wear Behavior of Plasma Spray Deposited and Post Heat-Treated Hydroxyapatite (HA)-Based Composite Coating on Titanium Alloy (Ti-6Al-4V) Substrate

Ist Teil von

• Metallurgical and materials transactions. A, Physical metallurgy and materials science, 2018-07, Vol.49 (7), p.3122-3132

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2018

Quelle

Springer journals

Beschreibungen/Notizen

• The present study concerns a detailed evaluation of wear resistance property of plasma spray deposited composite hydroxyapatite (HA)-based (HA-50 wt pct TiO 2 and HA-10 wt pct ZrO 2 ) bioactive coatings developed on Ti-6Al-4V substrate and studying the effect of heat treatment on it. Heat treatment of plasma spray deposited samples has been carried out at 650 °C for 2 hours (for HA-50 wt pct TiO 2 coating) and at 750 °C for 2 hours (for HA-10 wt pct ZrO 2 coating). There is significant deterioration in wear resistance for HA-50 wt pctTiO 2 coating and a marginal deterioration in wear resistance for HA-10 wt pct ZrO 2 coating in as-sprayed state (as compared to as-received Ti-6Al-4V) which is, however, improved after heat treatment. The coefficient of friction is marginally increased for both HA-50 wt pct TiO 2 and HA-10 wt pct ZrO 2 coatings in as-sprayed condition as compared to Ti-6Al-4V substrate. However, coefficient of friction is decreased for both HA-50 wt pct TiO 2 and HA-10 wt pct ZrO 2 coatings after heat-treated condition as compared to Ti-6Al-4V substrate. The maximum improvement in wear resistance property is, however, observed for HA-10 wt pct ZrO 2 sample after heat treatment. The mechanism of wear has been investigated.