Publication detail

Higher in-flight particle velocities enhance in vitro tribological behavior of plasma sprayed hydroxyapatite coatings

KHUN, N. LI, Z. KHOR, K. ČÍŽEK, J.

English title

Higher in-flight particle velocities enhance in vitro tribological behavior of plasma sprayed hydroxyapatite coatings

Type

journal article in Web of Science

Language

en

Original abstract

Hydroxyapatite (HA) coatings were deposited onto Ti6Al4V substrates via atmospheric plasma spraying under systematically varying spray parameters, leading to different in-flight particle velocities. Morphology, composition, and tribological properties of the coatings were then studied. The coatings deposited at higher in-flight particle velocities exhibited smoother surface topography, better inter-particle bonding and higher Young’s modulus and hardness. Ball-on-disc tribological results showed that the friction and wear of the HA coatings significantly decreased with increased in-flight particle velocity under both dry and wet (Hanks’ solution) conditions. All HA coatings exhibited lower friction and wear during the wet sliding due to the lubricating effect of the solution.

English abstract

Hydroxyapatite (HA) coatings were deposited onto Ti6Al4V substrates via atmospheric plasma spraying under systematically varying spray parameters, leading to different in-flight particle velocities. Morphology, composition, and tribological properties of the coatings were then studied. The coatings deposited at higher in-flight particle velocities exhibited smoother surface topography, better inter-particle bonding and higher Young’s modulus and hardness. Ball-on-disc tribological results showed that the friction and wear of the HA coatings significantly decreased with increased in-flight particle velocity under both dry and wet (Hanks’ solution) conditions. All HA coatings exhibited lower friction and wear during the wet sliding due to the lubricating effect of the solution.

Keywords in English

HA coating; thermal spraying; bio-tribology; Hanks’ solution; friction; wear

Released

01.11.2016

Publisher

Elsevier

Location

USA

ISSN

0301-679X

Volume

103

Number

1

Pages from–to

496–503

Pages count

8

BIBTEX


@article{BUT127152,
  author="Nay Win {Khun} and Zhong Alan {Li} and Khiam Aik {Khor} and Jan {Čížek},
  title="Higher in-flight particle velocities enhance in vitro tribological behavior of plasma sprayed hydroxyapatite coatings",
  year="2016",
  volume="103",
  number="1",
  month="November",
  pages="496--503",
  publisher="Elsevier",
  address="USA",
  issn="0301-679X"
}