Formation of hydroxyapatite coating on pure titanium substrates by ion beam dynamic mixing

Ohtsuka, Yoshiro; Matsuura, Masamichi; Chida, Nakaya; Yoshinari, Masao; Sumii, T; Dérand, Tore

doi:10.1016/s0257-8972(94)80037-5

Cited by 66 publications

(24 citation statements)

References 8 publications

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“…In order to improve coating-substrate (usually a metal) bond strength and other properties, a variety of coating techniques, such as pulsed laser deposition, 1 ion beam dynamic mixing, 2 ion beam deposition, 3 and magnetron sputtering, [4][5][6][7][8] have been explored to develop thin (generally less than 10 m) coatings of HA and other calcium phosphates.…”

Section: Introductionmentioning

confidence: 99%

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Immersion behavior of RF magnetron-assisted sputtered hydroxyapatite/titanium coatings in simulated body fluid

Ding

Lin

1999

J. Biomed. Mater. Res.

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The focus of the present study was on the dissolution/degradation behavior of a series of magnetron-sputtered, single-layered HA/Ti coatings on Ti-6Al-4V substrate immersed in SBF. Changes in coating morphology, crystal structure, and adhesion strength with immersion time are characterized. XRD, FTIR, and LVSEM results consistently indicate that highly crystalline monolithic HA coating is very dissolvable in SBF. The monolithic HA coating is largely delaminated in 3 weeks and entirely peeled off the substrate in 7 weeks. The dissolution is even greater for 95HA/5Ti coating, which severely disintegrated in only 1 week. The amorphous-like coatings sputtered from targets comprising 10 vol % or more Ti, however, appeared almost intact, and their adhesion strengths, which were all higher than 60 MPa, did not change much (within 10%) even after 14 weeks of immersion. The coatings from targets comprising roughly 10-50 vol % Ti combine advantages of high and nondeclining adhesion strength, high resistance to SBF attack, and possibly much higher bioactivity (with large amounts of Ca, P, etc., dissolved in the coatings) than that of Ti.

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Section: Introductionmentioning

confidence: 99%

“…14,15 During immersion tests, unfortunately, many thin HA coatings are extensively dissolved in short periods. For example, using an ion beam dynamic mixing technique, Ohtsuka et al 2 have developed an amorphous HA coating. However, this amorphous film dissolved almost completely within 1 day in Hanks' solution without further annealing.…”

Section: Introductionmentioning

confidence: 99%

Immersion behavior of RF magnetron-assisted sputtered hydroxyapatite/titanium coatings in simulated body fluid

Ding

Lin

1999

J. Biomed. Mater. Res.

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“…Recently perovskite (CaTiO3) and similar materials have been paid attention due to their use as an adhesive substrate for titanium coating material 6,10) , as well as their novel biomaterial characteristics with high bone conductivity ability [16][17][18][19][20] . And Table 2.…”

Section: Characteristics Of Titanium Coating Materials (Catio 3 -Ac) Pmentioning

confidence: 99%

“…development of an insoluble HA coating method instead of plasmasprayed coating has been rushed. Within CaTiO3 coating method, only 50nm of ultra-thin layer can be done by ion sputtering [17][18][19][20] , and thus regarding with absence/presence of bone conductivity, opinions are not constant. Therefore thermal decomposition method took attention of the researchers 6) .…”

Section: Characteristics Of Titanium Coating Materials (Catio 3 -Ac) Pmentioning

confidence: 99%

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Development of New Titanium Coating Material (CaTiO3-aC) with Modified Thermal Decomposition Method

Nagai

Okauchi

Rodrı́guez

et al. 2008

J. Hard Tissue Biology.

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We developed a novel method for titanium coating material using modified thermal decomposition technique, specifically focusing on presence of CaTiO3 and carbon C. Two layers of thin film coating composed of CaTiO3-amorphous carbon compound (CaTiO3-aC) and hydroxyapatite (HA) were generated on titanium surface. In this method, ratios of Ca/P as well as Ca/Ti, sintering temperature and sintering velocity were carefully planned. Within crystal structure of CaTiO3 granules, 4 atomic % of carbon in amorphous state was included. By our method, inclusion of carbon in HA suggested formation of carbonate apatite. Regarding with attachment-detachment experiment at titanium surface, adhesion strength was 2.5 times stronger in CaTiO3-aC/HA coating substrate as compared to HA only coating material. Results of the novel developed modified thermal decomposition method suggested that the 2 layers biomaterial composed of CaTiO3-aC (0.6 µm) and carbonate apatite-included HA (2.4 µm) can be used as a coating material on titanium surface.

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The application of ion beam analysis to calcium phosphate-based biomaterials

Russell

Alford

Luptak

et al. 1996

J. Biomed. Mater. Res.

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Ion beam technology may be applied in a straightforward fashion to the analysis and modification of biomaterials. For analytical purposes, characterization using megaelectron-volt He2+ ions provides a standardless, nondestructive means for accurately quantifying the composition of material surfaces and the thickness of thin films. In this study, three complementary ion backscattering techniques were utilized to characterize hydroxyapatite (HA) films: Rutherford backscattering spectrometry (RBS) can determine composition and amounts of elements heavier than He; forward recoil elastic spectrometry (FRES) can determine hydrogen content; resonance-enhanced RBS can quantify small amounts of light elements, e.g. carbon, by choosing a particular incident beam energy resulting in excitation of the light element nucleus. At this resonance energy, the scattering cross section greatly increases, improving elemental sensitivity. Sol-gel chemistry was used to synthesize HA films by spin coating and annealing in a rapid thermal processor. Using these techniques, the chemical composition of unfired films was Ca1.63O5.4H1.8C0.24P with a thickness of 3.01 x 10(18) atoms/cm2 and after firing at 800 degrees C as Ca1.66O4.0H0.26C0.09P with a thickness of 2.11 x 10(18) atoms/cm2. This compares favorably to stoichiometric HA, which has a composition of Ca1.67O4.33H0.33P.

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Formation of hydroxyapatite coating on pure titanium substrates by ion beam dynamic mixing

Cited by 66 publications

References 8 publications

Immersion behavior of RF magnetron-assisted sputtered hydroxyapatite/titanium coatings in simulated body fluid

Immersion behavior of RF magnetron-assisted sputtered hydroxyapatite/titanium coatings in simulated body fluid

Development of New Titanium Coating Material (CaTiO3-aC) with Modified Thermal Decomposition Method

The application of ion beam analysis to calcium phosphate-based biomaterials

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