Effect of Cu Content on Microstructure and Mechanical Properties of Porous Ti-5Mn Alloys
Porous Ti-5Mn-xCu(x=0,3,5,10)alloys were prepared by powder metallurgy process with va-cuum sintering using 50％ammonium bicarbonate particles as pore-forming agent,and the effects of Cu content on the microstructure and mechanical properties of porous Ti-5Mn alloys were investigated.The results show that the porosity of the prepared porous Ti-Mn-Cu alloys gradually decreases with increasing Cu content.The macropore diameter slightly reduces,and the number of micropores on the walls of the macropores also decreases gradually.The Ti2Cu phase appears in the porous Ti-Mn-Cu alloys,with its rela-tive amount increasing gradually with the rise in Cu content.The elastic modulus and compressive strength of porous Ti-Mn-Cu alloys increase accordingly with the increase of Cu content.Porous Ti-Mn-Cu alloys containing 3％～10％Cu and 5％Mn exhibit appropriate pore structures and mechanical properties similar to human bone,showing the potential as antibacterial orthopedic implant materials.
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