Electrohydrodynamic coating of metal with nano-sized hydroxyapatite.
Electrohydrodynamic spray deposition of a hydroxyapatite (HA) suspension consisting of nano-particles has been used to create a hydroxyapatite coating comprising of nanostructured surface topography. Preliminary coating experiments were carried out on an Al substrate and 30 s was found to be the most appropriate coating time. HA coating on titanium for this duration was found to be well-bonded to the substrate after heat-treatment. A thickness of 2 mum was achieved in 30 s and formation of a bone-like apatite on the surface was detected after incubation of the heat-treated coated Ti in simulated body fluid. Therefore, we have uncovered a new procedure by which nano-biomaterials can be deposited on real orthopedic substrates to prepare bioactive thin coatings in a simple and easy manner.
Li
Xiang
X
Department of Mechanical Engineering, University College London, London, UK.
Huang
Jie
J
Ahmad
Zeeshan
Z
Edirisinghe
Mohan
M
D000497:Alloys; D040761:Biomimetic Materials; D018786:Bone Substitutes / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry; D003460:Crystallization; D017886:Durapatite / Q000737:chemistry*; D006361:Heating; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures; D036103:Nanotechnology; D016062:Porosity; D011208:Powders; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D000497:Alloys; D018786:Bone Substitutes; D020099:Coated Materials, Biocompatible; D011208:Powders; D017886:Durapatite; D014025:Titanium