Effect of addition of Si on microstructure, mechanical properties, bio-corrosion and cytotoxicity of Mg-6Al-1Zn alloy
| Autor: | Mohabbat Amirnejad, A. Motavalli, Mohammad Rajabi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Alloy technology industry and agriculture Metals and Alloys 02 engineering and technology engineering.material equipment and supplies 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Hot pressing Microstructure 01 natural sciences Corrosion Compressive strength Transmission electron microscopy 0103 physical sciences Materials Chemistry engineering MTT assay Composite material 0210 nano-technology Magnesium ion |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 28:1755-1762 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(18)64819-8 |
| Popis: | The Mg-6Al-4Zn alloy was fabricated by mechanical alloying (MA) and hot pressing to serve as biodegradable metal implant. The influence of addition of 1% Si (mass fraction) on the microstructure, mechanical properties and bio-corrosion behavior of Mg-6Al-1Zn alloy was studied using X-ray diffractometry, transmission electron microscopy, compression test, as well as immersion, electrochemical test and MTT assay. The results showed that the addition of 1% Si to Mg-6Al-1Zn alloy led to the formation of fine Mg2Si phase with polygonal shape, and increased compressive strength, elongation and improved corrosion resistance. Furthermore, the cell viability of Saos-2 cells has been improved by addition of 1% Si to Mg-6Al-1Zn alloy. According to the results, the magnesium ions released in the methylthiazol tetrazolium (MTT) test have not shown any cell toxicity. All these indicated that the addition of 1% Si improved the properties of Mg-6Al-4Zn alloy for using as a biodegradable implant. |
| Databáze: | OpenAIRE |
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