{"id":1530,"date":"2022-02-26T15:48:51","date_gmt":"2022-02-26T15:48:51","guid":{"rendered":"https:\/\/energy-ti.com\/?p=1530"},"modified":"2022-02-26T16:28:10","modified_gmt":"2022-02-26T16:28:10","slug":"whats-porous-titanium-alloy-and-whats-it-used-for","status":"publish","type":"post","link":"https:\/\/energy-ti.com\/cs\/whats-porous-titanium-alloy-and-whats-it-used-for\/","title":{"rendered":"Co je por\u00e9zn\u00ed slitina titanu a k \u010demu se pou\u017e\u00edv\u00e1?"},"content":{"rendered":"

Ti and titanium alloys have various and incomparable advantages such as low density, high strength ratio, good corrosion resistance, fatigue resistance and biocompatibility, which has been considered as one of the most ideal biomaterials at present and have become the clinical preferred materials for bone implantation and tooth repair. However, the elastic modulus of Ti and titanium alloys ranges from 50 to 114 GPa, of which the most commonly used Ti6Al4V<\/a> alloy is 110GP, which is much higher than the elastic modulus of human bone (0.02 to 20GPa). The mismatch of elastic modulus results in poor load transfer from the implant to adjacent bone tissue, resulting in a “stress shielding” (stress shielding) phenomenon, which leads to bone absorption, gradual thinning of cortical bone and loosening of the implant, and even surgical failure. In addition, the simple mechanical bonding between the weak metal implant and human bone tissue affects the lifespan of the implant. Therefore, it is necessary to develop a new medical material that can match the mechanical properties of bone tissue and promote the growth and healing of bone tissue, and porous Ti implants, namely Ti or titanium alloy with porous structures, are becoming more and more research hotspots.<\/p>\n

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The porous structure is very similar to the microstructure of human bone and has the characteristics of small density, large specific surface area and good energy absorption. Porous titanium alloy combines excellent physical and chemical properties of titanium alloy and porous structure, which can be used to simulate the human bone trabecular structure and reduce the elastic modulus of dense titanium alloy. The unique pore structure of porous Ti and titanium alloy is conducive to the transport of body fluids and nutrients, and its rough surface is conducive to the differentiation and growth of new bone tissue into the implant, promoting the rapid formation of bone tissue inside the pore and effective link with the external bone tissue so that they improve the bond strength in the form of bone bonding. Porous titanium alloy is currently used in human bone implants, hip arthroplasty, etc., and is considered to be one of the most promising biomedical materials at present. However, there is no unified conclusion on the optimal pore size, porosity and other geometric parameters.<\/p>\n<\/div><\/section>
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Properties of medical porous Ti and titanium alloys<\/h3>
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After stainless steel and cobalt alloy, porous Ti and titanium alloy have become the third generation of medical metal materials emerging in the field of medical and clinical treatment. The excellent material for human hard tissue replacement should meet the following requirements:<\/p>\n