Processing and Characterization of Porous Titanium for Orthopedic Implant Prepared by Argon-atmospheric Sintering and Arc Plasma Sintering

• Autor(a) principal: Annur,Dhyah
• Data de Publicação: 2021
• Outros Autores: Rokhmanto,Fendy, Thaha,Yudi Nugraha, Kartika,Ika, Dimyati,Arbi, Supriadi,Sugeng, Suharno,Bambang
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Materials research (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600208
• topic: Porous Titanium; Space-Holder; Powder Metallurgy; Argon-atmospheric Sintering; APS

Abstract Porous titanium is proposed to be an effective orthopedic implant with a lower elastic modulus and supports osseointegration during implantation. To produce porous titanium, powder metallurgy (PM) assisted with a space-holder is used in this study. Pure titanium is used as the starting material, and salt (NaCl) is used as the space-holder. Argon-atmospheric sintering and arc plasma sintering (APS) methods are applied for the sintering process. NaCl content was varied from 0–40 wt%. The temperature sintering was at 1100 °C for the argon-atmospheric sintering, and the current process was at 75 A for the APS. The formation of pores, total porosity, pore distribution, phase formation, and mechanical properties were examined by the optical microscope, scanning electron microscope (SEM), X-ray diffraction (XRD), and compression testing. Titanium with the addition of 20 wt% of NaCl is shown to be a potential biomaterial for the orthopedic implant, having a porosity of 38–39%, the elastic modulus of 3.2–5 GPa, and the yield strength of 141–150 MPa (argon-atmospheric sintering and APS) which shown to be similar to the properties of cortical bone.