Polycrystalline and amorphous MgZnCa thin films
Polycrystalline and amorphous MgZnCa thin films
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DOI：
10.1016/j.corsci.2012.06.005
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发表时间：
2012-10
影响因子：
8.3
通讯作者：
K. Schlüter;C. Zamponi;N. Hort;K. Kainer;E. Quandt
中科院分区：
文献类型：
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作者：
K. Schlüter;C. Zamponi;N. Hort;K. Kainer;E. Quandt
研究了磁控溅射沉积Mg50Zn5Ca和Mg35Zn5Ca合金薄膜在磷酸盐缓冲盐溶液（PBS）中的腐蚀性能。显微组织研究表明，沉积条件对薄膜的显微组织有很大的影响。这样的制造多晶微结构与沉淀以及非晶薄膜是可能的。腐蚀试验表明，当组织由多晶析出变为非晶时，Mg50Zn5Ca和Mg35Zn5Ca的腐蚀速率分别从近80 μm/月和40 μm/月显著降低到3.5μm/月。
The corrosion properties of thin films fabricated from the alloys Mg50Zn5Ca and Mg35Zn5Ca by magnetron sputter deposition were investigated in phosphate buffered saline solution (PBS). Microstructural investigations revealed that the deposition conditions have a huge influence on the thin films’ microstructure. Such the fabrication of polycrystalline microstructures with precipitates was possible as well as amorphous films. Corrosion tests indicated a significant decrease of the corrosion rate from nearly 80 to 3.5μm/month for Mg50Zn5Ca and from about 40 to 4μm/month for Mg35Zn5Ca, respectively upon the change of the microstructure from polycrystalline with precipitates to amorphous.