The Effect of Coating Thickness on Corrosion Resistance of Hydroxyapatite Coated Ti6Al4V and 316L SS Implants

Aksakal, Bünyamin; Gavgalı, Mehmet; Dikici, Burak

doi:10.1007/s11665-009-9559-7

Cited by 61 publications

(22 citation statements)

References 30 publications

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“…Unfortunately, 316L steel only forms weak mechanical bond with the bone tissue due to its biological inertness, which turns difficult the fixing of implant to live bone. In order to improve the osseointegration of these implants, different studies were performed on the deposition of hydroxyapatite (HA) on stainless steel [2][3][4][5] . Indeed, HA (Ca 10 (PO 4 ) 6 (OH) 2 ) has a similar chemical composition and crystallographic structure as the natural apatite of human body bone and consequently can form strong bonds with the bone.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of HA-316L SS biocomposites in aqueous solutions

2013

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316L stainless steel and Hydroxyapatite (5, 20 and 50 wt. (%) HA)-316L stainless steel composites were fabricated by mechanical alloying technique, pressing and sintering from 316L and HA powders. The corrosion behavior of both sintered 316L and HA-316L composites was evaluated by electrochemical techniques in simulated body fluid (Ringer's solution) and in 0.1M HCl solution which simulates occluded cell corrosion conditions. The results indicate that 316L stainless steel and HA-316L composites are passive in Ringer's solution and active in HCl solution. All materials are highly corrosion resistant in Ringer's solution with corrosion current density in the order of 10 -6 A cm -2 or less. Both 316L stainless steel and 5% HA-316L composite present good corrosion resistance in HCl with corrosion current density in the order of 10 -5 A cm -2 . The corrosion resistance decreases with increasing HA content in both solutions.

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Section: Introductionmentioning

confidence: 99%

Corrosion behavior of HA-316L SS biocomposites in aqueous solutions

2013

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“…However, it is also important to see the effects of coating thickness on adhesion and corrosion that coated onto commonly used substrates via a fast and fl exible dipping method. Aksakal et al [ 164 ] studied the corrosion susceptibilities of Ti6Al4V and 316 L SS substrates coated with hydroxyapatite by sol-gel method. It was observed that the coating thickness was an effective parameter on both adhesion between the coating and material and corrosion resistance.…”

Section: Corrosion Of Coated Metallic Biomaterialsmentioning

confidence: 99%

Corrosion of Metallic Biomaterials

Dikici

Esen

Duygulu

et al. 2015

Springer Series in Biomaterials Science and Engineering

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Metallic materials have been used as biomedical implants for various parts of the human body for many decades. The physiological environment (body fl uid) is considered to be extremely corrosive to metallic surfaces; and corrosion is one of the major problems to the widespread use of the metals in the human body since the corrosion products can cause infections, local pain, swelling, and loosening of the implants. Recently, the most common corrosion-resistant metallic biomaterials are made of stainless steels and titanium and its alloys along with cobaltchromium-molybdenum alloys. It is well known that protective surface fi lms of the alloys play a key role in corrosion of the metallic implants. Key documents on the corrosion behavior of the metallic biomaterials in human body have been compiled under this chapter as a review. Keywords Metallic biomaterials • Corrosion • Physical body fl uid • Bioactive materials • Implant IntroductionThe main question is, "what is the most important property for a metallic biomaterial?" Clearly, the answer is biocompatibility . In addition, it is well known that corrosion is one of the major problems affecting the biocompatibility of orthopedic devices made of metals and alloys used as implants in the human body. Compared to other implants, metallic implants have excellent mechanical properties such as high elasticity, tensile strength, wear resistance, and machining.

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“…Williamson-Hall equation was employed to estimate the grain size of the deposited films. Preferred orientation was investigated using the relative texture coefficient (RTC hkl ), which is given by the following expression (Ref [32][33][34][35]:…”

Section: Characterization Of the Co-p Coatingsmentioning

confidence: 99%

Effect of pH, Surfactant, and Heat Treatment on Morphology, Structure, and Hardness of Electrodeposited Co-P Coatings

Zeinali-Rad

Allahkaram

Mahdavi

2015

J. of Materi Eng and Perform

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Nano-crystalline and amorphous Co-P coatings were deposited on plain carbon steel substrates by using direct current. Effects of electrolyte pH on morphology, current efficiency, phosphorus content, hardness, and preferred orientation of the nano-crystalline coatings were investigated. Moreover, the effects of heat treatment on microstructure and hardness of the nano-crystalline and the amorphous coatings were studied. The results showed that, phosphorus content and hardness of the nano-crystalline coatings were decreased by increasing of the pH, in spite of a current efficiency enhancement to as much as 98%. Grain size and preferred orientation were also changed from 13 to 31 nm and from mostly [002] to [100] by increasing the pH from 1 to 4, respectively. Smoother coatings and higher current efficiencies were obtained by the addition of 1 g/L sodium dodecyl sulfate (SDS) to the bath. Highest hardness of the nano-crystalline and the amorphous coatings was about 600 and 750 HV, which increased and reached 760 and 1090 HV after heat treatment, respectively.

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The Effect of Coating Thickness on Corrosion Resistance of Hydroxyapatite Coated Ti6Al4V and 316L SS Implants

Cited by 61 publications

References 30 publications

Corrosion behavior of HA-316L SS biocomposites in aqueous solutions

Corrosion behavior of HA-316L SS biocomposites in aqueous solutions

Corrosion of Metallic Biomaterials

Effect of pH, Surfactant, and Heat Treatment on Morphology, Structure, and Hardness of Electrodeposited Co-P Coatings

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