Short- and long-term corrosion behavior of carbonate apatite-coated Mg-4mass% Y-3mass% RE alloy in cell culture medium
Short- and long-term corrosion behavior of carbonate apatite-coated Mg-4mass% Y-3mass% RE alloy in cell culture medium
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DOI：
10.1016/j.corsci.2022.110222
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发表时间：
2022-03-11
影响因子：
8.3
通讯作者：
Akashi, Takaya
中科院分区：
文献类型：
--
作者：
Hiromoto, Sachiko;Itoh, Sayaka;Akashi, Takaya
在Mg-4mass% Y-3mass%稀土（WE 43）合金表面制备了不同碳酸根含量的破骨反应性碳酸磷灰石（CAp）涂层和非生物吸收性羟基磷灰石（HAp）涂层。在细胞培养基中进行电化学阻抗谱测量6小时和10周，并使用扫描电子显微镜观察腐蚀形态。CAp涂覆的样品的涂层电导率为104 Ω cm 2，高于HAp涂覆的样品的2 × 10（3）Ω cm（2）。前者最初4周的平均极化电阻为4 x 10（4）-7.5 x 10（4）Ω cm（2），高于后者的2 x 10（4）Ω cm（2）。
Osteoclast responsive carbonate apatite (CAp) coatings with different carbonate content rates and non-bioabsorbable hydroxyapatite (HAp) coating were formed on Mg-4mass% Y-3mass% rare earth (WE43) alloy. Electrochemical impedance spectroscopy measurement in a cell culture medium was performed for 6 h and 10 weeks, and the corrosion morphology was observed using a scanning electron microscope. Coating layer resis-tance of the CAp-coated specimens for 6 h was 104 omega cm2 which was higher than 2 x 10(3) omega cm(2) of the HAp-coated specimen. Mean polarization resistance for the initial 4 weeks for the former was 4 x 10(4)-7.5 x 10(4) omega cm(2) which was higher than 2 x 10(4) omega cm(2) of the latter.