Plastic and dental implants are subjected to high mechanical loads during their service life. While many materials currently used in additive manufacturing, including stainless steel and cobalt-chromium alloys, can cope with these mechanical stresses, there are concerns that they release toxic or allergic elements that can cause inflammation in surrounding tissues and reject implants.
An important prerequisite for all medical implants is their biocompatibility. Because they are designed to remain in the body for a long time, the materials used in the production of the implants have no effect on the organism, regardless of the technology used to make them. The biocompatibility of materials used in medical implants proves to be the main approval criterion for their official regulatory approval.
In addition, the phase composition of these materials is not affected by the laser melting process. Similar to atomized powder, ti-42nb is a pure phase. The manufactured components also have fine-grained microstructure with an extremely uniform distribution of elements, and it is said that scanning electron microscopy using energy dispersive X-ray spectroscopy has confirmed the absence of Ti or nb-rich phase segregation in the powder. Through mechanical analysis through tensile and compression tests, the company says the processed material has a combination of high elasticity and strength. Since the tensile elasticity of ti-42nb is similar to that of cortical bone, the use of this material can reduce the stress shielding between bone and implant, as well as the associated inflammation or implant loosening due to mechanical mismatches.
Of tantalum and tantalum alloy with high density, high melting point, good corrosion resistance, excellent high temperature strength, workability, weldability and low plastic/brittle transition temperature, dynamic mechanical properties and excellent after oxidation treatment the surface density, stable, high dielectric constant of the amorphous oxide film and other excellent comprehensive performance make it widely used in electronics, chemical industry, weapons, etc. With the rapid development of tantalum capacitors, the demand for tantalum capacitors will increase greatly. Copper instead of aluminum in integrated circuits is a new application field for tantalum. With the rapid development of high temperature alloy, the application of tantalum in high temperature alloy is increasing day by day. The excellent dynamic properties of tantalum and tantalum alloys also accelerate their application and development in weapons.
