產品介紹
What is BIOTANIUM (nanostructured titanium)?
類別:BIOTANIUM
發佈日期範圍:100/12/01 ~


What is BIOTANIUMTM  (nanostructured titanium)?
Nanostructuring is the process by which the internal arrangement of atoms and other internal features inside materials can be modified and controlled at the nanoscale (1 nm to 100 nm). Among the various methods to accomplish this, one technique, Severe Plastic Deformation, has emerged that can economically customize two key internal material characteristics: the size of their grains (or crystals) and the structure of the boundaries between the grains. These characteristics strongly influence the properties of virtually every polycrystalline solid, including all metals and alloys. Through Severe Plastic Deformation (SPD) processing, the grain size of conventional metals can be reduced from the typical range of 10 to 50 micrometers to a range between 20 and 500 nanometers. This control allows the strength and other properties to be significantly enhanced well beyond those of conventional metals. At the same time, the characteristics of the grain boundaries can be altered to increase metal ductility, the ability to resist failure, and to customize the properties of the metal at its surfaces. Enhancements in biointegration, corrosion resistance, fatigue life, and fracture toughness are connected with the control of grain boundary structure at the nanoscale.
Nanostructured titanium is produced by subjecting ordinary rods or plates of commercial grades of titanium to SPD processing. This processing reduces the grain size of the initial commercial purity titanium (grade 4) rods from 25 μm to 150 nm, while increasing the strength to levels beyond that of most titanium allows, as illustrated in the images and table below.



How did this technology come into existence? It has its origins in the former Soviet Union in the 1980s. In the early-1990s, after the formation of the Russian Federation, Terry Lowe assembled a multi-national technology group, acquired over $12 million in research and development funds, and led the development of the original laboratory scale processing concept into an industrial scale nanostructuring process for titanium and other metals.