Nanostructured nickel-free austenitic stainless steel composites with different content of hydroxyapatite

Tuliński, Maciej; Jurczyk, M.

doi:10.1016/j.apsusc.2012.07.071

Cited by 22 publications

(12 citation statements)

References 8 publications

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“…Coatings of hydroxyapatite are often applied to metallic implants (titanium, titanium alloys and stainless steels) to modify the surface properties, but in many cases satisfactory results are not achieved, due to crack formation or badly controlled adjustment of the specific apatite phases. Latest studies have focused on the possibility of its application in composite form, in materials combining metal with bioceramic ( Ref 3,[15][16][17][18][19]. These studies aim at optimizing the mechanical properties of the composites.…”

Section: Introductionmentioning

confidence: 99%

“…The mechanical alloying method and the powder metallurgy process have been developed for the fabrication of bulk Ti-HA and Ni-free austenitic stainless steel-HA nanocomposites with a unique microstructure (Ref 3,17). Independently, metal matrix composites (MMC) composed of magnesium alloy AZ91D as a matrix and hydroxyapatite particles as reinforcements have been examined in vitro for mechanical, corrosive and cytocompatible properties (Ref 18).…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Hydroxyapatite Addition on the Properties of the Mechanically Alloyed and Sintered Mg-RE-Zr Alloy

Kowalski

Nowak

Jakubowicz

et al. 2016

J. of Materi Eng and Perform

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This paper discusses the influence of the chemical composition on the microstructure, mechanical and corrosion properties of mechanically alloyed and sintered (Mg-4Y-5.5Dy-0.5Zr)-x wt.% HA composites. Mechanical alloying for 25 h of the Mg-4Y-5.5Dy-0.5Zr composition, followed by sintering under argon at 550°C for 2 h, led to the formation of a bulk alloy with an ultrafine grained microstructure. With the increase of the hydroxyapatite content in the (Mg-4Y-5.5Dy-0.5Zr)-x wt.% HA composite, a reduction of the grain sizes of the bulk material was noticeable. In the case of the bulk (Mg-4Y-5.5Dy-0.5Zr)-10 wt.% HA composite, the grain sizes of approx. 60 nm have been recorded by atomic force microscopy. The final microstructure of the synthesized composites strongly influenced the mechanical and corrosion properties. The Mg-4Y-5.5Dy-0.5Zr alloy was characterized by higher average values of YoungÕs modulus (36.6 GPa). In the case of the (Mg-4Y-5.5Dy-0.5Zr)-5 wt.% HA scaffolds with the porosity of 48%, the YoungÕs modulus was equal to 7.1 GPa. The (Mg-4Y-5.5Dy-0.5Zr)-10 wt.% HA composite was more corrosion resistant (I c = 5.849 3 10 25 A cm 22 , E c = 21.565 V versus SCE) than Mg-4Y-5.5Dy-0.5Zr alloy (I c = 4.838 3 10 24 A cm 22 , E c = 21.555 V versus SCE). The influence of hydrofluoric acid treatment on the corrosion behavior of the (Mg-4Y-5.5Dy-0.5Zr)-5 wt.% HA composite was also investigated. The electrochemical test showed that the corrosion resistance of fluoride-treated specimens was higher, compared with the untreated samples in the RingerÕs solution. In conclusion, fluoride-treated (Mg-4Y-5.5Dy-0.5Zr)-HA composites are biodegradable materials with adjustable mechanical and corrosive properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effects of Hydroxyapatite Addition on the Properties of the Mechanically Alloyed and Sintered Mg-RE-Zr Alloy

Kowalski

Nowak

Jakubowicz

et al. 2016

J. of Materi Eng and Perform

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“…Recent studies have clearly demonstrated that the nanostructuring of metallic biomaterials can considerably improve not only its mechanical properties but also the biocompatibility [6]. The nanocrystalline structures can be produced by non-equilibrium processing technique such as mechanical alloying (MA) [7] or rapid solidification [8].…”

Section: Introductionmentioning

confidence: 99%

“…The mechanical alloying method and the powder metallurgy process for the fabrication of bulk Ni-free austenitic stainless steel-HA and Ti-HA nanocomposites with a unique microstructure have been developed [7,9]. Independently, metal matrix composite (MMC) composed of magnesium alloy AZ91D as a matrix and hydroxyapatite particles as reinforcements have been examined [10].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Corrosion Properties of Magnesium-Bioceramic Nanocomposites

Kowalski

Nowak

Jurczyk

2016

Archives of Metallurgy and Materials

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Magnesium alloys have recently attracted much attention as a new generation of biodegradable metallic materials. In this work, Mg1Mn1Zn0.3Zr-bioceramic nanocomposites and their scaffolds were synthesized using a combination of mechanical alloying and a space-holder sintering process. The phase and microstructure analysis was carried out using X-ray diffraction, scanning electron microscopy and the properties were measured using hardness and corrosion testing equipment. Nanostructured Mg-bioceramic composites with a grain sizes below 73 nm were synthesized. The Vickers hardnesses for the bulk nanostructured Mg-based composites are two times greater than that of pure microcrystalline Mg metal (50 HV0.3). Produced Mg-based bionanomaterials can be applied in medicine.

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“…3,4 The metallic materials known and widely used for medical implants in bone reconstructive surgery and prosthetic treatment are stainless steel (316L), Co-Cr alloys and unalloyed Ti. [5][6][7][8][9][10] However, some chromic or nickel ions could be released into the body due to metallic fatigue and corrosion, resulting in inflammation or toxicity. 11 Moreover, implanted hard tissues might cause a stress-shielding effect and bone resorption reactions because of the elastic incoordination with surrounding bones.…”

mentioning

confidence: 99%

Influence of Applied Voltages on Mechanical Properties and In-Vitro Performances of Electroplated Hydroxyapatite Coatings on Pure Titanium

Chen

Tsai

Chen

et al. 2016

J. Electrochem. Soc.

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Titanium and its alloys have been extensively used in biomaterials due to their bone-compatible modulus, superior bio-compatibility and enhanced corrosion resistance. But the metal implants that contact the body will release ions and scraps. In this study, Hydroxyapatite (HA, Ca 10 (PO 4 ) 6 (OH) 2 ) was coated on a pure Ti substrate by electrochemical deposition process, which can provide a well-controlled process and product. Across various applied voltages, the electroplated HA/Ti composites were evaluated on their chemical and mechanical performances and the behaviors of in-vitro simulating tests. Highly pure HA coatings were obtained with additional voltages from 16 V to 19 V. In addition, their mechanical properties were significantly enhanced with increasing voltages. With the results of in-vitro evaluations, the electroplated HA/Ti composites is capable of serving as a biomaterial for bone substitution or implantation. Biomaterials are synthetic materials that function in vivo or in vitro while physically in contact with the human body. Due to the coexistence with blood and body fluids, an ideal biomaterial must be biocompatible, nontoxic, stable, easily-manufactured and with proper mechanical properties.1,2 For an implantation, the main purpose is repairing the loss of tissues or organs to restore their original functions; thus, biocompatibility is the most concerning factor.Human tissues are roughly divided into two categories: soft and rigid. A bone is a rigid organ that constitutes parts of the skeleton. Bones further support and protect the organs of the body, enable human mobility, produce red and white blood cells and also store minerals. While bone tissues age and are damaged by external forces, they have an inherent ability to regenerate. However, an excessive bone loss requires the use of bone grafts. And while graft materials regularly originate from the same individual (autograft), a donor (allograft) or animal bone (heterograft), artificial biomaterials are attracting more and more interest in the field of tissue engineering. 3,4 The metallic materials known and widely used for medical implants in bone reconstructive surgery and prosthetic treatment are stainless steel (316L), Co-Cr alloys and unalloyed Ti.5-10 However, some chromic or nickel ions could be released into the body due to metallic fatigue and corrosion, resulting in inflammation or toxicity. 11Moreover, implanted hard tissues might cause a stress-shielding effect and bone resorption reactions because of the elastic incoordination with surrounding bones. For actual biomedical applications, considering mechanical properties and stability, titanium and its alloys are still selected for replacing supports in the human body, including artificial joints, bones, stents, tooth roots and other implanted artificial substitute materials. 12Hydroxyapatite (HA, Ca 10 (PO 4 ) 6 (OH) 2 ) is a major composition of human bones and also a popular ceramic material used in orthopedics. After implantation, the calcium and phosphorus ions could be r...

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Nanostructured nickel-free austenitic stainless steel composites with different content of hydroxyapatite

Cited by 22 publications

References 8 publications

The Effects of Hydroxyapatite Addition on the Properties of the Mechanically Alloyed and Sintered Mg-RE-Zr Alloy

The Effects of Hydroxyapatite Addition on the Properties of the Mechanically Alloyed and Sintered Mg-RE-Zr Alloy

Mechanical and Corrosion Properties of Magnesium-Bioceramic Nanocomposites

Influence of Applied Voltages on Mechanical Properties and In-Vitro Performances of Electroplated Hydroxyapatite Coatings on Pure Titanium

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