• Predescu, Andra
• Sohaciu, Mirela
• Predescu, Cristian
• Berbecaru, Andrei
• Matei, Ecaterina
• Pantilimon, Cristian
• Tarcea, Claudia Ionela
• Ciuca, Sorin
• Gradinaru, Catalin
• Coman, George

Abstract

<jats:p> Increasing biocompatibility of implant materials is an important factor in developing better and long-lasting implants that function in a very close way to real tissue and bone. Various alloys have been chosen due to their biocompatibility, such as: stainless steels, titanium alloys and nickel or cobalt alloys. According to the alloying elements it is possible to change the material properties to fit into various application niches such as pacemaker devices, stents, biosensors, dental or bone implants and others. Some alloying elements confer higher biocompatibility than others and the commonly used alloys include elements that can be detrimental to human health such as Nickel, Vanadium and Cobalt. Choosing alloying elements such as Nb, Fe and Zr in order to replace the commonly used metals reduces the risks of accumulation of various substances that can damage the human tissues and lead to health complications. The proposed alloys are elaborated in a Five Celes melting furnace under argon atmosphere in order to create a more homogeneous material with lesser defects and inclusions. The cast alloys are then analyzed through modern methods such as SEM, XRD, EDS and their mechanical properties such as hardness and strength and these properties are compared to that of the bone in order to assess mechanical reliability. </jats:p>

Topics

• impedance spectroscopy
• nickel
• stainless steel
• inclusion
• scanning electron microscopy
• x-ray diffraction
• strength
• hardness
• titanium
• titanium alloy
• cobalt
• Energy-dispersive X-ray spectroscopy
• vanadium
• biocompatibility
• cobalt alloy