PREPARATION AND CHARACTERIZATION OF Ti-Al-Nb ALLOYS FOR ORTHOPEDIC IMPLANTS

Oliveira, V.; Chaves, Ricardo Risso; Bertazzoli, Rodnei; Caram, Rubens

doi:10.1590/s0104-66321998000400002

Cited by 44 publications

(16 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure 15.6 depicts 15 Titanium and Titanium Alloy Applications in Medicinethe anodic polarization curve for CP titanium and Ti-6Al-4V alloys, showing the electric current intensity versus potential (versus saturated calomel electrode (SCE)), obtained with 5 g/l NaCl, pH 4 solution as an electrolytic medium at 310 K. The potential was scanned at 0.1 mV s −1 [11]. The anodic portion of the polarization curve allows one to evaluate the corrosion behavior of a metallic material in an electrolytic medium.…”

Section: Corrosion Behaviormentioning

confidence: 99%

“…Its usage as implant material began in the 1960s [10]. Despite the fact that titanium exhibits superior corrosion resistance and tissue acceptance when compared with stainless M.J. Jackson (&) Kansas State University, Salina, KS, USA e-mail: jacksonmj04@yahoo.com [11]. To overcome such restrictions, CP titanium was substituted by titanium alloys, particularly, the classic grade 5, i.e., Ti-6Al-4V alloy.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Titanium and Titanium Alloy Applications in Medicine

Jackson

Kopač

Balažic

et al. 2016

Surgical Tools and Medical Devices

View full text Add to dashboard Cite

Titanium is a transition metal. It is present in several minerals including rutile and ilmenite, which are well dispersed over the Earth's crust. Even though titanium is as strong as some steels, its density is only half of that of steel. Titanium is broadly used in a number of fields, including aerospace, power generation, automotive, chemical and petrochemical, sporting goods, dental and medical industries. The large variety of applications is due to its desirable properties, mainly the relative high strength combined with low density and enhanced corrosion resistance. This chapter discusses the applications of titanium and its alloys in the medical field. Metallurgical Aspects IntroductionAmong the metallic materials, titanium and its alloys are considered the most suitable materials in medical applications because they satisfy the property requirements better than any other competing materials, such as stainless steels, CrCo alloys, commercially pure (CP) Nb and CP Ta [1][2][3][4][5][6]. In terms of biomedical applications, the properties of interest are biocompatibility, corrosion behavior, mechanical behavior, ability to be processed, and availability [7][8][9].Titanium may be considered as being a relatively new engineering material. It was discovered much later than the other commonly used metals, its commercial application started in the late 1940s, mainly as structural material. Its usage as implant material began in the 1960s [10]. Despite the fact that titanium exhibits superior corrosion resistance and tissue acceptance when compared with stainless M.J. Jackson (&) Kansas State University, Salina, KS, USA e-mail: jacksonmj04@yahoo.com [11]. To overcome such restrictions, CP titanium was substituted by titanium alloys, particularly, the classic grade 5, i.e., Ti-6Al-4V alloy. The Ti-6Al-4V α + β-type alloy, the most worldwide utilized titanium alloy, was initially developed for aerospace applications [12,13]. Although this type of alloy is considered a good material for surgically implanted parts, recent studies have found that vanadium may react with the tissue of the human body [2]. In addition, aluminum may be related with neurological disorders and Alzheimer's disease [2]. To overcome the potential vanadium toxicity, two new vanadium-free α + β-type alloys were developed in the 1980s. Vanadium, a β-stabilizer element, was replaced by niobium and iron, leading to Ti-6Al-7Nb and Ti-5Al-2.5Fe (α + β)-type alloys [4,6,14]. While both alloys show mechanical and metallurgical behavior comparable to those of Ti-6Al-4V, a disadvantage is that they all contain aluminum in their compositions.In recent years, several studies have shown that the elastic behavior of α + β-type alloys is not fully suitable for orthopedic applications [15][16][17][18]. A number of studies suggest that unsatisfactory load transfer from the implant device to the neighboring bone may result in its degradation [9]. Also, numerical analyses of hip implants using finite element method indicate that the use of biomaterials wi...

show abstract

Section: Corrosion Behaviormentioning

confidence: 99%

mentioning

confidence: 99%

Titanium and Titanium Alloy Applications in Medicine

Jackson

Kopač

Balažic

et al. 2016

Surgical Tools and Medical Devices

View full text Add to dashboard Cite

show abstract

“…The biocompatibility, especially thrombocompatibility, of Ti can be enhanced by introducing alloy elements [325]. Some publications [326][327][328][329][330][331][332][333][334] provide limited information on the toxic activity of V as an alloy element in the Ti6Al4V alloy, because it was found that V could be regarded as a potentially toxic factor [335,336], which is, however, true only for a considerable concentration of V in a body, due to development of its undesired immunological response, when the freed V ions migrate from the material surface to a soft tissue, binding with proteins [337,338]. Some research on cells implies that Ti6Al4V exhibits high cytotoxicity [307][308][309][310][311]339]; there are reports that V may cause sterile abscesses, and Al may cause scarring, while Ti, Zr, Nb and Ta show good biocompatibility [340].…”

Section: Selection Of Materials Of Implantable Devices In Regenerativmentioning

confidence: 99%

Introductory Chapter: Multi-Aspect Bibliographic Analysis of the Synergy of Technical, Biological and Medical Sciences Concerning Materials and Technologies Used for Medical and Dental Implantable Devices

Dobrzański¹

2018

Biomaterials in Regenerative Medicine

View full text Add to dashboard Cite

“…hard tissue replacement, when high strength and good tribological properties are necessary, the Cp-Ti is unsuitable. Therefore its use in implants is restricted to applications which involve moderate mechanical stress, such as dental implants, preferentially for endosseous dental implant applications [3,4]. Such implants have direct contact with bone.…”

Section: Introductionmentioning

confidence: 99%

Porous SiO2/HAp Coatings on Cp-Titanium Grade 1 Surfaces Produced by Electrophoretic Deposition

Moskalewicz

Babkiewicz

Dubiel

et al. 2016

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

Porous sio2/HAp coAtIngs on cp-tItAnIum grAde 1 surfAces Produced by electroPHoretIc dePosItIonPorous hydroxyapatite doped Sio2 coatings were electrophoretically deposited (EPD) on commercially pure titanium. The influence of EPD parameters on coatings quality was investigated. Microstructural observation was done using transmission and scanning electron microscopy as well as X-ray diffractometry.The coatings consisted of spherical micro and nanocrystalline hydroxyapatite (HAp) as well as amorphous Sio2 nanoparticles. The coatings exhibited open porosity with pore diameter up to 1 µm and due to presence of nanoparticles high surface development.It was found that application of Sio2/HAp coating increase corrosion resistance of titanium in Ringer's solution.

show abstract

PREPARATION AND CHARACTERIZATION OF Ti-Al-Nb ALLOYS FOR ORTHOPEDIC IMPLANTS

Cited by 44 publications

References 9 publications

Titanium and Titanium Alloy Applications in Medicine

Titanium and Titanium Alloy Applications in Medicine

Introductory Chapter: Multi-Aspect Bibliographic Analysis of the Synergy of Technical, Biological and Medical Sciences Concerning Materials and Technologies Used for Medical and Dental Implantable Devices

Porous SiO2/HAp Coatings on Cp-Titanium Grade 1 Surfaces Produced by Electrophoretic Deposition

Contact Info

Product

Resources

About