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| 1 | Corrosion and wear behavior of an Mg–2Zn–0.2Mn alloy in simulated body fluid显示文摘In this work, the corrosion behavior of the ascast and extrusion and aging treatment Mg–2Zn–0.2Mn alloy in simulated body fluid(SBF) were studied. The wear behavior of Mg–2Zn–0.2Mn alloy was investigated using pin-on-disk technique and stainless steel as counterbody under a constant sliding velocity at different loads ranging from 2 to 5 N with deionized water and SBF as lubrication.The results showed that the extrusion and aging treatment Mg–2Zn–0.2Mn alloy exhibited better corrosion resistance compared with the as-cast alloy due to finer average grain size, more homogeneous phase distribution, and decrease in porosity. The friction coefficient of fractional pair under SBF and deionized water lubrication were obviously lower than that of dry sliding condition. However, the wear rate of Mg–2Zn–0.2Mn alloy under SBF lubrication was higher than that of dry sliding and deionized water lubrication due to the corrosiveness of SBF accelerated the wear of the magnesium alloy. The magnesium alloy exhibited different wear mechanisms with the variety of loads and lubrication conditions. | De-Bao Liu Bo Wu Xiao Wang Min-Fang Chen | 2015 | Rare Metals2015，34，8： | 7 |
| 2 | 壳聚糖涂层对Mg-6%Zn-10%Ca_3(PO_4)_2植入材料生物相容性的影响(英文)显示文摘研究壳聚糖包覆的Mg-6%Zn-10%Ca_3(PO_4)_2植入材料生物体内的降解特性。采用0.2%的醋酸溶液溶解壳聚糖,将其在60℃下涂覆在复合材料样品表面,固化30 min得到壳聚糖的涂层。壳聚糖涂覆后的样品细胞毒性为0级,说明该涂层完全没有毒性,可以用于生物实验。生物体内实验表明:与无涂层的样品相比,植入涂覆有壳聚糖的复合材料后,在新西兰兔静脉血中的离子浓度较低。壳聚糖涂层可以减缓复合材料在生物体内的降解速率。生物体内实验表明,涂覆壳聚糖的复合材料对新西兰兔的重要器官,如心、肾、肝、肌肉都没有损伤,而新生骨组织会聚集在壳聚糖涂覆的复合材料周围,有利于骨组织的生长。壳聚糖涂层有利于减缓植入材料在生物体中的降解过程,减少氢气析出造成的皮下气泡产生,有利于提高复合材料的生物相容性。 | 赵俊 陈良建 余琨 陈畅 戴翌龙 乔雪岩 颜阳 余志明 | 2015 | Transactions of Nonferrous Metals Society of China2015，25，3： | 1 |
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