title: Tribological behavior of plasma-sprayed carbon nanotube-reinforced hydroxyapatite coating in physiological solution.
abstract: Wear behavior of plasma-sprayed carbon nanotube (CNT)-reinforced hydroxyapatite (HA) coating is evaluated in the simulated body fluid environment. Apart from enhancing the fracture toughness and providing biocompatibility, CNT-reinforced HA coating demonstrated superior wear resistance compared with that of hydroxyapatite coating without CNT. Initiation and propagation of microcracks during abrasive wear of plasma-sprayed hydroxyapatite coatings was suppressed by CNT reinforcement. Surface characterization and wear studies have shown that in addition to acting as underprop lubricant, CNTs provide reinforcement via stretching and splat-bridging for enhanced abrasion resistance in vitro.
authors.affiliation: Department of Mechanical and Materials Engineering, Florida International University, Miami, FL 33174, USA.
authors.forename: Kantesh
authors.initials: K
authors.lastname: Balani
authors.forename: Yao
authors.initials: Y
authors.lastname: Chen
authors.forename: Sandip P
authors.initials: SP
authors.lastname: Harimkar
authors.forename: Narendra B
authors.initials: NB
authors.lastname: Dahotre
authors.forename: Arvind
authors.initials: A
authors.lastname: Agarwal
mesh_terms: D017886:Durapatite; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D012996:Solutions; D013499:Surface Properties
chemical_list: D037742:Nanotubes, Carbon; D012996:Solutions; D017886:Durapatite