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Physical and Mechanical Characterization of Porous Titanium for Biomedical Applications
Stress shielding occurs when metallic orthopedic implants have an elastic modulus that is 6–12 times higher than cortical bone; as a result, the bone at the implantation site atrophies due to decreased mechanical strain and may eventually fracture. Adding pores to an implant significantly decreases its modulus, and powder metallurgy can create titanium alloys with pores. Improved pore size and process variable control at lower temperatures and with fewer constraints on chemical reactivity. Titanium was selected because of its high strength-to-weight ratio, low elastic modulus, superior corrosion resistance, durability, osteointegration capabilities, and biocompatibility. Porous titanium alloys have been studied, and their physical and mechanical properties have been compared to those of bone. This study aims to determine how adding different amounts of Tellurium (0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, and 5 wt%) to the Ti6Al4V alloy changes its mechanical and physical properties. All alloys were prepared by powder metallurgy technique; the compact pressure was determined to be 800 MP, and the green samples were sintered at 350 ℃ for 1 h, then at 550 ℃ for 1 h, and at 1000 ℃ for 2 h in an inert gas (of Argon), then the samples were cooled in the furnace to room temperature. The microstructure was observed using a light optical microscope. The fabricated titanium samples had a porosity of 1.41 to 30% and a compressive strength of 744.45 to 239.19 MPa, which is close to the compressive strength of human bone (cortical).
Physical and Mechanical Characterization of Porous Titanium for Biomedical Applications
Stress shielding occurs when metallic orthopedic implants have an elastic modulus that is 6–12 times higher than cortical bone; as a result, the bone at the implantation site atrophies due to decreased mechanical strain and may eventually fracture. Adding pores to an implant significantly decreases its modulus, and powder metallurgy can create titanium alloys with pores. Improved pore size and process variable control at lower temperatures and with fewer constraints on chemical reactivity. Titanium was selected because of its high strength-to-weight ratio, low elastic modulus, superior corrosion resistance, durability, osteointegration capabilities, and biocompatibility. Porous titanium alloys have been studied, and their physical and mechanical properties have been compared to those of bone. This study aims to determine how adding different amounts of Tellurium (0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, and 5 wt%) to the Ti6Al4V alloy changes its mechanical and physical properties. All alloys were prepared by powder metallurgy technique; the compact pressure was determined to be 800 MP, and the green samples were sintered at 350 ℃ for 1 h, then at 550 ℃ for 1 h, and at 1000 ℃ for 2 h in an inert gas (of Argon), then the samples were cooled in the furnace to room temperature. The microstructure was observed using a light optical microscope. The fabricated titanium samples had a porosity of 1.41 to 30% and a compressive strength of 744.45 to 239.19 MPa, which is close to the compressive strength of human bone (cortical).
Physical and Mechanical Characterization of Porous Titanium for Biomedical Applications
Karkush, Mahdi (editor) / Choudhury, Deepankar (editor) / Fattah, Mohammed (editor) / Jamal Al-Deen, Haydar H. J. (author) / Amir, Basmal H. Abdul (author)
International Conference on Geotechnical Engineering Iraq ; 2024 ; Warith Al-Anbiyaa University, Karbala, Iraq
Current Trends in Civil Engineering and Engineering Sciences 2024, Vol 2 ; Chapter: 41 ; 544-555
2024-11-16
12 pages
Article/Chapter (Book)
Electronic Resource
English
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