著者

Hayashi Terutake Maekawa Katsuhiro Tamura Masashi HANYU Kenichi

出版者

一般社団法人日本機械学会

雑誌

JSME International Journal Series A Solid Mechanics and Material Engineering (ISSN:13447912)

巻号頁・発行日

vol.48, no.4, pp.369-375, 2005-10-15

被引用文献数

25

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The present paper investigates the laser sintering of titanium sheets toward the fabrication of porous artificial bones. The novelty lies in the use of a titanium powder sheet mixed with an organic binder and the application of selective laser sintering to the fabrication of a laminated porous structure. Alternating irradiation of Nd: YAG pulses with short scanning paths results in the suppression of distortion of the sintered part as well as enhanced mechanical properties. Under the appropriate conditions identified in the experiment, a bending strength of 63MPa and a Young's modulus or 1.5GPa are attained when the load is applied parallel to the lamination direction, whereas load vertical to the lamination direction yields 79MPa and 1.8GPa, respectively. The size of pores varies from 200 to 300μm, and the porosity is approximately 65%. These values, other than Young's modulus, are almost equivalent to those of human bones.