Study of the Ca/P atomic ratio of the amorphous phase in plasma-sprayed hydroxyapatite coatings

Carayon, M.T.; Lacout, J.L.

doi:10.1016/s0022-4596(02)00085-3

Cited by 84 publications

(56 citation statements)

References 7 publications

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“…An anhydrous phase diagram CaO-P 2 O 5 at temperatures within 200-2200°C is shown in Fig. 3 (Kreidler and Hummel 1967;Carayon and Lacout 2003). Table 4 comprises crystallographic data of the existing CaPO 4 (Elliott 1994;White and Dong 2003;Mathew and Takagi 2001).…”

Section: The Members Of Capo 4 Familymentioning

confidence: 99%

“…This method is based on a rapid quenching of melted CaPO 4 occurring, e.g., during plasma spraying of HA (Carayon and Lacout 2003;Keller and Dollase 2000;Kumar et al 2004). A plasma jet, possessing very high temperatures (*5000 to *20,000°C), partly decomposes HA, which results in formation of a complicated mixture of products, some of which would be ACPs.…”

Section: Acpmentioning

confidence: 99%

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Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Dorozhkin¹

2017

Morphologie

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Section: The Members Of Capo 4 Familymentioning

confidence: 99%

Section: Acpmentioning

confidence: 99%

Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Dorozhkin¹

2017

Morphologie

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“…Many experimental deposition processes have been investigated, including plasma spraying, sputtering, pulsed laser deposition, dip coating, sol-gel and electrophoretic deposition. 11) Among these processes, the plasma spraying [12][13][14][15][16][17][18][19][20][21] has advantages of high deposition rates with sufficiently low cost, and then, titanium dental implants are widely coated with HAp by using plasma spraying. 22) The plasma-sprayed calcium phosphate coatings, however, show poor adherence to the metal substrate and nonuniformity which limits a critical thickness to ensure complete coverage.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Calcium Phosphate Films by Radiofrequency Magnetron Sputtering

et al. 2005

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Calcium phosphate films were prepared on titanium substrates by radiofrequency (RF) magnetron sputtering at RF powers from 75 to 150 W. Hot-pressed -tricalcium phosphate (-TCP) plates with a high density (>99:6%) were used as a sputtering target. The substrate was not intentionally heated. The films consisted of amorphous calcium phosphate and oxyapatite (Ca 10 (PO 4 ) 6 O) phases. The ratio of the oxyapatite phase depended on the sputtering conditions of RF power, oxygen gas concentration in the sputtering gas (C O2 ) and total pressure in the chamber. The (002) preferred orientation of oxyapatite phase was observed. The deposition rate of films increased with increasing RF power and decreasing C O2 . The highest deposition rate was 0.143 nmÁs À1 (0.515 mmÁh À1 ).

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“…A lower annealing temperature used for sol-gel dip-coating process can produce adhesive thin coating layer without severe cracking. An extremely high temperature (6000-10,000°C) is applied in plasma-spray deposition can decompose the HAp properties into tricalcium phosphate, tetra-calcium phosphate, calcium oxide (CaO), and others amorphous phases [41,42]. When increasing annealing temperature from 375 to 500°C, the adhesion strength between HAp coating and the substrate increases [43,44].…”

Section: Sol-gel Dip-coating Methodsmentioning

confidence: 99%

Hydroxyapatite-Based Coating on Biomedical Implant

Harun¹,

Asri²,

Sulong³

et al. 2018

Hydroxyapatite - Advances in Composite Nanomaterials, Biomedical Applications and Its Technological Facets

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The use of metallic biomaterials for replacement of biomedical implants has been traced back from the nineteenth century. These metallic biomaterials have been declared as clinical success as their mechanical properties that satisfy the prerequisite of the human bone. Nevertheless, critical issues of the materials when they are utilised as implants; including the releasing toxic and harmful metal ions through wear and corrosion processes after longer implantation. Besides that, the bonding strength between bone and implants itself is considered weak due to the diferent components of human bone and metal implants. Hence, developing hydroxyapatite (HAp) coating on metallic biomaterials is expected to overcome the problems faced by biocompatible metallic biomaterials. As far as this, various commercial techniques have been introduced to develop the HAp coating on metallic biomaterials. The techniques are including plasma-spraying method, sol-gel dip-coating, electrochemical deposition and high-velocity suspension plasma-spraying. The formation of HAp coating on metallic biomaterials improved the corrosion resistance together promoting its load-bearing ability and enhanced substrate-coating adhesion.

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Study of the Ca/P atomic ratio of the amorphous phase in plasma-sprayed hydroxyapatite coatings

Cited by 84 publications

References 7 publications

Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Preparation of Calcium Phosphate Films by Radiofrequency Magnetron Sputtering

Hydroxyapatite-Based Coating on Biomedical Implant

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