Effect of Urea Contents on Pore Structure and Compressive Properties of Ti-10% Mg Porous Materials
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摘要: 以尿素为造孔剂，采用粉末冶金法在630℃真空条件下烧结制备Ti-10% Mg多孔材料，研究了造孔剂含量对其孔隙结构、物相成分、孔隙率及抗压性能的影响。研究表明，造孔剂含量为25%（w）时，烧结体的孔隙大小均匀，主要相为Ti和Mg，造孔剂添加量未对其物相产生明显影响；随着造孔剂含量的增加，烧结体的孔隙率随之增加，抗压强度和弹性模量随之降低；Ti-10% Mg多孔材料的抗压强度和弹性模量分别为16~183 MPa和1.87~10.15 GPa，理论上可以作为人体骨骼的替代材料。Abstract: With urea as pore-forming agent and by the powder metallurgy method, Ti-10% Mg porous materials were prepared at 630℃ under the condition of vacuum. The pore-forming agent content on the pore structure, physical phase composition, porosity and compressive properties of the products were studied. The results show that when the pore-forming agent content (w) is 25%, the pore sizes of the sintered body are uniform, the main phases are Ti and Mg, and the addition of the pore-forming agent has no obvious effect on the phases; with the increasing of the content of the pore-forming agent, the porosity increases while the compressive strength and elastic modulus decrease; the compressive strength and elastic modulus are 16~183 MPa and 1.87~10.15 GPa, which theoretically can be used as an alternative material for human skeleton.
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Keywords:
- proe-forming agent /
- powder metallurgy /
- porous materials /
- pore structure /
- compressive properties
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