Novel open-cell bulk metallic glass foams with promising characteristics

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题名:	Novel open-cell bulk metallic glass foams with promising characteristics
作者:	鄭憲清;Li, J.B.;Lin, H.C.;Jang, J.S.C.;Kuo, C.N.;Huang, J.C.
贡献者:	工學院材料科學與工程研究所
关键词:	Amorphous materials;Bones;Bulk metallic glass;Diffraction;Foamed metals;Foams;glass;humans;mechanical properties;Metallic glasses;Metals and alloys;modulus of elasticity;Porosity;Porous materials;prediction;scanning electron microscopes;Scanning electron microscopy;X-ray diffraction;Yield strength;Young's modulus
日期:	2013-05-29
上传时间:	2026-04-23 11:40:34 (UTC+8)
出版者:	Elsevier;Elsevier B.V
摘要:	摘要： A series of open-cell bulk metallic glass foams (BMGFs) with different porosity content from 46% to 75% were successfully fabricated by a space holder technique. Morphologies of the foam, the amorphous nature and mechanical properties were systematically investigated by a combination of scanning electron microscope (SEM), X-ray diffraction (XRD), differential scanning carlorimetry (DSC), and compression test. The BMGFs possess Young's moduli ranging from 4 to 21GPa and yield strength within 65–231MPa, matching well with the moduli as well as yield strength of human bones and the predictions from theoretical models. These BMGFs are promising for bio-implant application without significant stress shielding effect. The open-cell Zr-based BMGFs with different porosities of 46–73% and homogeneous distributed pore size of 50–300micron can be produced precisely by controlling the combination of process parameters. The resulting BMGFs possess Young's moduli of 21 down to 4GPa, matching well with the moduli of human bone and the predictions by theoretical models, promising for bio-implant application in avoiding the stress shielding effect. [Display omitted] •BMGFs with 46–73% porosity were successfully fabricated.•Pore size of BMGFs are very close to the required pore size for bone cell growth.•Young's moduli and yield strength of the BMGFs are nicely comparable to human bone.•Young's modulus of the BMGFs can well be predicted by Gibson and Ashby model. 出版者： Elsevier B.V 出版日期： 2013-08-15 出處： Materials letters, 2013-08, Vol.105, p.140-143 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2013 Elsevier B.V. 識別號： ISSN: 0167-577X 識別號： EISSN: 1873-4979 識別號： DOI: 10.1016/j.matlet.2013.04.071
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