Pulsed laser deposition of hydroxyapatite thin films on Ti-5Al-2.5Fe substrates with and without buffer layers

Nelea, Valentin; Ristoscu, Carmen; Chiritescu, Catalin; Ghica, C.; Pelletier, Hervé; Mille, Pierre; Cornet, A.

doi:10.1016/s0169-4332(00)00616-4

Cited by 99 publications

(47 citation statements)

References 9 publications

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“…Calcium hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , CHA) is very important macroporous bone mineral (55-70% interconnected porosity) from the scientific point of view and view of application [1][2][3][4]. Synthetic calcium hydroxyapatite is used as bioceramic coating for medical implants due to excellent biocompatibility and osteoconductivity.…”

Section: Introductionmentioning

confidence: 99%

“…One more very important requirement for CHA coatings is porosity, because bone cells osteoblasts and osteoclasts, also proteins could flow inside pores supporting formation of new bone. The CHA coatings should have a high degree of crystallinity, correct stoichiometry and very good adhesion to the substrate [1,12,13]. Cell colonization and bone growth occur when pores are larger than 50-300 µm [2,11,[14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of sol–gel derived calcium hydroxyapatite thin films spin-coated on silicon substrate

Malakauskaite-Petruleviciene

Stankevičiūtė

Niaura

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of sol–gel derived calcium hydroxyapatite thin films spin-coated on silicon substrate

Malakauskaite-Petruleviciene

Stankevičiūtė

Niaura

et al. 2015

Ceramics International

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“…It has been shown that the stoichiometry cannot be preserved when ablating hydroxyapatite in vacuum and that the lack of hydrogen is mainly responsible for it. It is well known fact that in the case of the deposition in vacuum good HA coatings can be obtained after a postdeposition annealing in air [30,31]. It is conceivable that a post-deposition annealing in air, which always contains water vapour, restores the HA stoichiometry.…”

Section: Discussionmentioning

confidence: 99%

“…The migration of the adsorbed atoms can reduce unhomogeneity of deposited material but the deficit of hydrogen will remain. However, post-deposition annealing in the air, which always contains some water vapour, restores the HA stoichiometry and results in crystalline hydroxyapatite coatings [30,31]. Fig.3.…”

Section: Expansion Into Vacuummentioning

confidence: 99%

Expansion of a multi-component laser-ablated plume

Słowicka

Walenta

Szymański

2011

Eur. Phys. J. Appl. Phys.

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Abstract. The expansion of a plume generated during laser ablation is studied with the Direct Simulation Monte Carlo method. The plume is a mixture of four disparate molecular mass components and expands in vacuum or into ambient gas. The time dependence of deposition rate is studied and the transition from an initial vacuum-like to a diffusion-like regime of expansion in ambient gas is shown. The lack of stoichiometry increases with the ratio of molecular masses of ablated particles and at disparate masses the stoichiometry is seriously affected. Ambient gas worsens the stoichiometry unless it supplies particles compensating the backward and sideward flows of plume constituents.

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“…The laser remelting of Ti and its alloys has been used for different purposes: deposition of thin coatings [4,5,6], creation of oxides, nitrides and oxynitrides [7], micromachining [8][9][10], laser hardening [11][12][13], increase in intrinsic stresses [14].…”

Section: Introductionmentioning

confidence: 99%

The Possibility Of Use Of Laser-Modified Ti6Al4V Alloy In Friction Pairs In Endoprostheses

Majkowska

Jażdżewska

Wołowiec

et al. 2015

Archives of Metallurgy and Materials

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The purpose of this paper is to show results of laser treatment at cryogenic conditions of the Ti6Al4V alloy used for orthopedic applications. That modification process ought to bring beneficial changes of microstructure and residual stresses in the surface layer. The paper presents the abrasive wear of the base and laser remelted material in association with ceramics Al 2 O 3 . Despite the surface cracking after laser treatment the tribological properties in simulated body fluid have been substantially improved.Keywords: laser treatment, abrasive wear, titanium, endoprosthesesCelem artykułu jest pokazanie rezultatów obróbki laserowej w warunkach kriogenicznych stopu Ti6Al4V używanego w aplikacjach ortopedycznych. Tego rodzaju proces modyfikacji powinien przynieść korzystne zmiany w mikrostrukturze i naprężeniach własnych warstwy wierzchniej. Artykuł prezentuje badania odporności na zużycie ścierne materiału podstawowego i nadtopionego laserowo w skojarzeniu z ceramiką Al 2 O 3 . Pomimo pęknięć na powierzchni materiału po obróbce laserowej własności tribologiczne badane w roztworze symulującym płyn ustrojowy zostały znacznie ulepszone.

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Pulsed laser deposition of hydroxyapatite thin films on Ti-5Al-2.5Fe substrates with and without buffer layers

Cited by 99 publications

References 9 publications

Synthesis and characterization of sol–gel derived calcium hydroxyapatite thin films spin-coated on silicon substrate

Synthesis and characterization of sol–gel derived calcium hydroxyapatite thin films spin-coated on silicon substrate

Expansion of a multi-component laser-ablated plume

The Possibility Of Use Of Laser-Modified Ti6Al4V Alloy In Friction Pairs In Endoprostheses

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