In the near future, titanium titanium round bar electrode alloys will replace Ti6Al4VELI series alloy as the most important medical metallic implant materials. The present main task is to: (1) to develop a more excellent biocompatibility, mechanical properties is closer to the human body of new type B titanium electrode alloy cortical bone. (2) improve the melting furnace, in order to reduce the loss of the materials without segregation and defect of the material is prepared. (3) improve the material design theories make it closer to the reality of material research. (4) to expand publicity, so that the scholars from all walks of life more widely in communication studies. Early in 1940, the titanium electrode alloy research began to gradually, Bothe men such as titanium electrode was applied to the rat bone, found the rat bone and titanium electrode has good compatibility, no adverse reaction occurred. 50 ~ 60 s of titanium tubing price the 20th century, the development of the titanium electrode alloy with high temperature resistant properties, in the early 70 s, a group of corrosion resistant titanium electrode alloys have been developed, in the mid - 80 - s phase, the second generation of type a + beta without vanadium titanium electrode alloy (Ti - 6, 7 nb and Ti - 5 Al - 2.5 - Fe) has been developed, in a certain clinical application, but this kind of toxic elements in alloy Al and Fe can bring certain harm to human body, and the elastic modulus of the alloy is still not up to the standard of the real femur, produces the stress shielding around the implant appear the phenomenon of bone resorption, implant rupture caused by loose or leading to implant failure. By at the start of 1990, the United States and Japan set out to research the third generation of the new 3d titanium wire medical titanium electrode alloy, which is given priority to with beta type titanium electrode alloy.
Although titanium electrode alloy has good biological compatibility, but its belong to biological inert materials. Wear resistance is low, under the condition of wear and tear to contain titanium electrode wear debris, and titanium tubing price even may induce inflammation, lead to dissolve bone around implants, reduce its service life. On titanium alloy electrode surface modification can keep original excellent properties of titanium electrode alloy, on the basis of its biocompatibility, wear resistance, corrosion resistance, etc, to strengthen, improve the clinical use of performance so as to better play its use value. Titanium alloy electrode surface modification method has a lot of kinds, including oxidation modification method, vapor deposition, ion implantation, plasma spraying method and laser surface modification method, etc.
When choosing suitable medical Titanium welding pipe materials for different parts, the modulus of elasticity, toughness, strength, corrosion resistance and other related indicators to consider as the essential factor. Zhen-tao yu and others will be different metal elements are compared, and the experiment of their study results show as follows: V, Co, Cd, Cr, Ni, Hg element toxicity is stronger, such as Fe, Al element. In organisms found in areas such as the spleen, liver and kidney have V ion deposition, its biological toxicity;