Microscopic mechanical properties of titanium composites containing multi-layer graphene nanofillers

Song, Yinglin; Chen, Y.; Liu, W.W.; Li, W.L.; Wang, Y.; Zhao, Dandan; Liu, X.B.

doi:10.1016/j.matdes.2016.07.077

Cited by 110 publications

(33 citation statements)

References 35 publications

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“…In addition, the complexity of elements contained in the matrix and calcium-containing reactants also reflected the existence of interdiffusion of elements during sintering. Researchers revealed that graphene, uniformly distributed in the titanium matrix, still exists in the titanium matrix/multilayer graphene nanofiller composites prepared by SPS, despite the reactions between nano-carbon and titanium that occur during high-temperature sintering [ 21 ]. This indicated that it is possible that only the nano-carbon at the ends or defects react with titanium due to the presence of the vacuum environment and surface modification of nano-carbon, and the amount of nano-carbon that has reacted with titanium is very small [ 20 ].…”

Section: Resultsmentioning

confidence: 99%

“…The C element was also detected elsewhere in the samples, but no significant presence of nano-carbon was observed, which was because that the nano-carbon is coated with other phases. Moreover, the existence of nano-carbon was found on the surface of the Ti or HA composites in the many literatures [ 20 , 21 , 22 ]. Due to incomplete sintering, there were still some large agglomerated particles in the composite, as indicated by spot H in Figure 11 f. In addition, a large amount of granular particles (C, D) were present on the fracture surface, and mainly contained Ti, Nb, C, O, Ca, P, etc.…”

Section: Resultsmentioning

confidence: 99%

“…In fact, a new type of biological material that satisfies its comprehensive performance can be obtained by the adjustment of preparation method and components [ 16 , 17 , 18 , 19 ]. Research showed that carbon nanotubes (CNTs) and graphene nanoflakes (GNFs) not only have high strength, specific surface area, corrosion resistance and other properties, but also appear good biocompatibility and degradability [ 20 , 21 , 22 ]. After added in composites, CNTs and GNFs are expected to improve biocompatibility of composites while maintaining their mechanical properties [ 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…Research showed that carbon nanotubes (CNTs) and graphene nanoflakes (GNFs) not only have high strength, specific surface area, corrosion resistance and other properties, but also appear good biocompatibility and degradability [ 20 , 21 , 22 ]. After added in composites, CNTs and GNFs are expected to improve biocompatibility of composites while maintaining their mechanical properties [ 20 , 21 , 22 ]. It was revealed that both CNTs-HA and graphene sheet-HA composites are ideal materials for bone tissue engineering scaffolds and beneficial to the proliferation and differentiation of human fetal osteoblastic cell line (hFOB 1.19) [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Nano-Carbon Reinforced Titanium Matrix/Hydroxyapatite Biocomposites Prepared by Spark Plasma Sintering

Jiang

Shao

et al. 2018

Nanomaterials

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Nano-carbon reinforced titanium matrix/hydroxyapatite (HA) biocomposites were successfully prepared by spark plasma sintering (SPS). The microstructure, mechanical properties, biocompatibility, and the relationship between microstructure and properties of biocomposites were systematically investigated. Results showed there are some new phases in sintered composites, such as β-Ti, TiO3, ZrO2, etc. Moreover, a small amount of Ti17P10, CaTiO3, Ca3(PO4)2 were also detected. The reaction that may occur during the preparation process is suppressed to some extent, which is because that the addition of second phases can prevent the direct contact of titanium with HA and reduce the contact areas. Transmission electron microscope (TEM) analysis proved the existence of elemental diffusion and chemical reactions in sintered composites. Compared with results of composites prepared by hot-pressed sintering before, mechanical properties (microhardness, compressive strength, and shear strength) of 0.5-GNFs composites prepared by SPS were increased by about 2.8, 4.8, and 4.1 times, respectively. The better mechanical properties of 0.5-GNFs composite in nano-carbon reinforced composites are mainly due to the lower degree of agglomeration of tubular carbon nanotubes (CNTs) compared to lamellar graphene nanoflakes (GNFs). Moreover, the strengthening and toughening mechanisms of nano-carbon reinforced titanium alloy/HA biocomposite prepared by spark plasma sintering (SPS) mainly included second phase strengthening, grain refinement strengthening, solution strengthening, graphene extraction, carbon nanotubes bridging, crack tail stripping, etc. In addition, in vitro bioactivity test revealed that the addition of nano-carbon was beneficial to promote the adhesion and proliferation of cells on the surface of titanium alloy/HA composite, because nano-carbon can enhance the formation of mineralized necks in the composites after transplantation, stimulate biomineralization and promote bone regeneration.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Nano-Carbon Reinforced Titanium Matrix/Hydroxyapatite Biocomposites Prepared by Spark Plasma Sintering

Jiang

Shao

et al. 2018

Nanomaterials

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“…The hardness values of the samples increased compared to the pure Ti. But the maximum increase was obtained 0.5wt.% MLG added composite [12].…”

Section: Anahtar Kelimeler: Titanyum Grafen Toz Metalürjisi Kompozmentioning

confidence: 86%

Grafen-Titanyum (<30μm) Kompozitlerin Toz Metalurjisi Yöntemiyle Üretilmesi: Mikroyapi ve Mekanik Özellikler

Mutuk

Gürbüz²

2019

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Titanium has extraordinary features of any metallic element such as corrosion resistance, strength to density ratio etc. Due to its good features titanium can be used in the composite as a matrix material. Titanium matrix composites (TiMCs) can be used in various industries such as automotive, airplanes and especially biomaterials. Today, as carbon reinforcing material carbon nanotube (CNT), graphite and graphene are used as reinforcing materials. The graphene has the most remarkable properties in this reinforced material due to its extraordinary mechanical features, low friction and high abrasion resistance. Composite materials produced by using titanium and graphene may have remarkable mechanical and microstructural properties. This is conspicuous subject in recent years. In the present study, graphene (Gr) reinforced titanium composites were produced by powder metallurgy method. The effect of various percentages of graphene (0-0,15-0,30-0,45-0,60 wt.%) on the microstructure, density, hardness and compressive strength of Ti composites have been investigated. From the mechanical tests after sintering at 1100 o C for 120min. The highest hardness and the greatest compressive strength were obtained for 0,30 wt.% Gr reinforced composites (520.2 HV and 1137 MPa) when compared to pure titanium (419.8 HV and 780 MPa). The crystal phase and microstructure of the composites were detected by scanning electron microscopy (SEM) and X-ray diffractometer (XRD). Better mechanical properties were observed for Ti-Gr composite materials when compared pure Ti. These kinds of composites promise the future for using especially the field of biomaterials.

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Graphene‐Reinforced Advanced Composite Materials

Ahmed

et al. 2019

Handbook of Graphene

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Microscopic mechanical properties of titanium composites containing multi-layer graphene nanofillers

Cited by 110 publications

References 35 publications

Microstructure and Mechanical Properties of Nano-Carbon Reinforced Titanium Matrix/Hydroxyapatite Biocomposites Prepared by Spark Plasma Sintering

Microstructure and Mechanical Properties of Nano-Carbon Reinforced Titanium Matrix/Hydroxyapatite Biocomposites Prepared by Spark Plasma Sintering

Grafen-Titanyum (<30μm) Kompozitlerin Toz Metalurjisi Yöntemiyle Üretilmesi: Mikroyapi ve Mekanik Özellikler

Graphene‐Reinforced Advanced Composite Materials

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