Friction and wear behaviour of cp Ti and Ti6Al4V following nitric acid passivation

Masmoudi, M.; Assoul, Mohamed; Wéry, M.; Abdelhédi, Ridha; Halouani, Foued; Monteil, Guy

doi:10.1016/j.apsusc.2006.04.047

Cited by 50 publications

(26 citation statements)

References 25 publications

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“…In this previous work, we studied the effects of the nitric acid solution concentration, its temperature and the period of treatment on the corrosion resistance of the passivated cp Ti and Ti6Al4V alloy, namely polarisation resistance by using response surface methodology (RSM). In anther research by the same author [22] we have investigated the effect of this nitric acid passivation protocol on the tribological behaviour of the cp Ti * Corresponding author at: Postal address: Pub Poste BP 102, 3041 Sfax, Tunisia. and Ti6Al4V subjected, to sliding wear condition.…”

Section: Introductionmentioning

confidence: 99%

Wear behaviour of nitric acid passivated cp Ti and Ti6Al4V

Masmoudi

Assoul

Wéry

et al. 2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Wear behaviour of nitric acid passivated cp Ti and Ti6Al4V

Masmoudi

Assoul

Wéry

et al. 2009

Journal of Alloys and Compounds

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“…The effect of surface physical properties such as topography on cell behaviour is a rather recent concept that has allowed rationalizing the well-known effect that roughness has on osseointegration and that has been very well analysed in the case of dental implants. Treatments of passivation (Masmoudi et al 2006; mainly by acid etching) and roughening (Aparicio et al 2003;Schuh et al 2004;Gil et al 2007; shot peening and blasting) are the most commonly employed methods for dental implants.…”

Section: Metallic Materialsmentioning

confidence: 99%

Biomaterials in orthopaedics

Navarro

Michiardi

Castaño

et al. 2008

J. R. Soc. Interface.

1,263

730

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At present, strong requirements in orthopaedics are still to be met, both in bone and joint substitution and in the repair and regeneration of bone defects. In this framework, tremendous advances in the biomaterials field have been made in the last 50 years where materials intended for biomedical purposes have evolved through three different generations, namely first generation (bioinert materials), second generation (bioactive and biodegradable materials) and third generation (materials designed to stimulate specific responses at the molecular level). In this review, the evolution of different metals, ceramics and polymers most commonly used in orthopaedic applications is discussed, as well as the different approaches used to fulfil the challenges faced by this medical field.

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“…The increased solubility of these phases can eventually lead to the poor apposition of bone and compromize the mechanical stability of the implant [12,29]. This can occur when the coating itself de-laminates over time due to poor bonding strength of the HA onto the underlying surface or as the coating itself resorbs into the surrounding environment [30]. Figure 5 shows the XRD pattern of the CoBlast HA coated substrates.…”

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confidence: 99%

A Modified Surface on Titanium Deposited by a Blasting Process

et al. 2011

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Hydroxyapatite (HA) coating of hard tissue implants is widely employed for its biocompatible and osteoconductive properties as well as its improved mechanical properties. Plasma technology is the principal deposition process for coating HA on bioactive metals for this application. However, thermal decomposition of HA can occur during the plasma deposition process, resulting in coating variability in terms of purity, uniformity and crystallinity, which can lead to implant failure caused by aseptic loosening. In this study, CoBlast TM , a novel blasting process has been used to successfully modify a titanium (V) substrate with a HA treatment using a dopant/abrasive regime. The impact of a series of apatitic abrasives under the trade name MCD, was investigated to determine the effect of abrasive particle size on the surface properties of both microblast (abrasive only) and CoBlast (HA/abrasive) treatments. The resultant HA treated substrates were compared OPEN ACCESSCoatings 2011, 1 54 to substrates treated with abrasive only (microblasted) and an untreated Ti. The HA powder, apatitic abrasives and the treated substrates were characterized for chemical composition, coating coverage, crystallinity and topography including surface roughness. The results show that the surface roughness of the HA blasted modification was affected by the particle size of the apatitic abrasives used. The CoBlast process did not alter the chemistry of the crystalline HA during deposition. Cell proliferation on the HA surface was also assessed, which demonstrated enhanced osteo-viability compared to the microblast and blank Ti. This study demonstrates the ability of the CoBlast process to deposit HA coatings with a range of surface properties onto Ti substrates. The ability of the CoBlast technology to offer diversity in modifying surface topography offers exciting new prospects in tailoring the properties of medical devices for applications ranging from dental to orthopedic settings.

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Friction and wear behaviour of cp Ti and Ti6Al4V following nitric acid passivation

Cited by 50 publications

References 25 publications

Wear behaviour of nitric acid passivated cp Ti and Ti6Al4V

Wear behaviour of nitric acid passivated cp Ti and Ti6Al4V

Biomaterials in orthopaedics

A Modified Surface on Titanium Deposited by a Blasting Process

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