Abstract:Microstructure and mechanical properties of Ti-6Al-4V/equine bone (EB) composites fabricated by ball milling and spark plasma sintering (SPS) have been investigated. Ti-6Al-4V/EB composites were successfully fabricated by a planetary ball-milling of spherical Ti6Al4V powder and natural EB powder and SPS at 1000 °C within 15 min under 50 MPa. EB was uniformly dispersed in the Ti6Al4V matrix owing to ball-milling, and beta phase transformation temperature of 1000 °C provided phase stability. The composites conta… Show more
“…3 a. Previous studies [ 41 , 42 ] have elucidated that the synergy between fibers and polymers is instrumental in amplifying the resilience of biocomposites, leading to elevated hardness values. Fig.…”
“…3 a. Previous studies [ 41 , 42 ] have elucidated that the synergy between fibers and polymers is instrumental in amplifying the resilience of biocomposites, leading to elevated hardness values. Fig.…”
“…One of the basic materials used for implants is titanium. For titanium, research has been undertaken on the sintering (SPS) of titanium powders [51]. Sintered zirconium can replace titanium more successfully [22].…”
Materials were obtained from commercial zirconium powders. 1 mass%, 2.5 mass% and 16 mass% of niobium powders were used as the reinforcing phase. The SPS method and the extrusion method classified as the SPD method were used. Relative density materials of up to 98% were obtained. The microstructure of the sintered Zr-xNb materials differs from that of the extruded materials. Due to the flammability of zirconium powders, no mechanical alloying was used; only mixing of zirconium and niobium powders in water and isopropyl alcohol. Niobium was grouped in clusters with an average niobium particle size of about 10 μm up to 20 μm. According to the Zr-Nb phase equilibrium system, the stable phase at RT was the hexagonal α-phase. The tests were carried out for materials without the additional annealing process. The effect of niobium as a β-Zr phase stabilizer is confirmed by XRD. Materials differed in their phase composition, and for both methods the β-Zr phase was present in obtained materials. A very favorable effect of niobium on the increase in corrosion resistance was observed, compared to the material obtained from the powder without the addition of niobium.
“…Ti-matrix composites using bone were produced by Jeong et al [7]. Ball-milled Ti6Al4V powders and equine bone (EB) powders were spark plasma sintered at 1000 • C. The existence of hydroxyapatite, the main component of EB, in a sintered Ti6Al4V matrix increased the hardness of composites, indicating good mechanical properties.…”
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