Enhanced Mechanical Properties, Corrosion Behavior and Bioactivity of Ti-based Bulk Metallic Glasses with Minor Addition Elements

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• 作者：Feng-Xiang Qin ; Yang Zhou ; Chuan Ji…
• 关键词：Bulk metallic glass ; Microstructure ; Alloy design ; Corrosion ; Mechanical behavior ; Biocompatibility
• 刊名：Acta Metallurgica Sinica (English Letters)
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：29
• 期：11
• 页码：1011-1018
• 全文大小：1,770 KB
• 刊物主题：Metallic Materials; Spectroscopy/Spectrometry; Organometallic Chemistry; Tribology, Corrosion and Coatings; Nanotechnology; Characterization and Evaluation of Materials;
• 出版者：Springer Berlin Heidelberg
• ISSN：2194-1289
• 卷排序：29

文摘

In this research, corrosion behavior, mechanical properties and bioactivity of Ti–Zr–Cu–Pd–Sn bulk metallic glasses with minor addition of Au, Pt, Nb or Ta elements were investigated. The results revealed that minor additions of the elements were beneficial to enhancing mechanical properties and corrosion resistance of Ti-based bulk metallic glasses. Minor addition of the element (especially with Nb and Ta addition) results in the improvement in plastic deformation ability due to the existing of nanoparticles with a size smaller than 10 nm in glassy matrix, inhibiting the deformation of the shear bonds. Enrichments of Ti and Zr elements in oxide layer were responsible for high corrosion resistance. The bioactivity of Ti-based bulk metallic glasses was also investigated. The best combination of large plastic deformation ability, good corrosion resistance and bioactivity in Ti₄₀Zr₁₀Cu₃₃Pd₁₄Sn₂Ta₁ BMG was obtained.