Preparation and characterization of porous titanium using space-holder technique

• Published in: Rare metals Vol. 28; no. 4; pp. 338 - 342
• Main Authors: Niu, Wenjuan, Bai, Chenguang, Qiu, Guibao, Wang, Qiang, Wen, Liangying, Chen, Dengfu, Dong, Lingyan
• Format: Journal Article
• Language: English
• Published: Beijing Journal Publishing Center of University of Science and Technology Beijing 01.08.2009; Springer Nature B.V; College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
• Subjects: Biocompatibility; Biomaterials; Chemistry and Materials Science; Corrosion resistance; Energy; Materials Engineering; Materials Science; Mathematical models; Mechanical properties; Metallic Materials; Nanoscale Science and Technology; Physical Chemistry; Porosity; Porous materials; Powder metallurgy; Stresses; Surgical implants; Titanium; 力学性能; 多孔钛; 孔隙形态; 平均孔径; 生物相容性; 空间技术; powder metallurgy; pore morphology; porous titanium; mechanical properties; space-holder
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-009-0066-7

Titanium-based porous materials can be used in structural applications and medical implants because of their excellent mechanical properties at elevated temperatures, good corrosion resistance and wonderful biocompatibility. However, most of the methods used to produce the porous metal can only give limited porosity and uncontrollable pore morphologies. In the present study, a newly developed method of powder metallurgy using the space-holder technique was used to fabricate porous titanium with controllable porosity. The morphological features and mechanical properties of the products were fully investigated. The results show that the porosity is in the range of 55%-75%, and the mean pore size, with an average sphericity of -0.72, is 600 μm. The plateau stresses vary between 10 MPa and 35 MPa. As predicted by the Gibson-Ashby model, the plateau stress decreases with increasing porosity.