在 NCU PP技术沉积的 Ti N- Mo S2 / Ti N复合膜中添加 A1元素并改变部分沉积工艺 ,可以在 1Cr18Ni9Ti基体上沉积出 Ti Al N - Mo S2 / Ti Al N硬质润滑膜 .利用 SEM,XPS等手段研究涂层的成分、微观结构等 .通过摩擦学试验测定其结合强...在 NCU PP技术沉积的 Ti N- Mo S2 / Ti N复合膜中添加 A1元素并改变部分沉积工艺 ,可以在 1Cr18Ni9Ti基体上沉积出 Ti Al N - Mo S2 / Ti Al N硬质润滑膜 .利用 SEM,XPS等手段研究涂层的成分、微观结构等 .通过摩擦学试验测定其结合强度等性能 .结果表明 ,在钻头上沉积 Ti Al N- Mo S2 / Ti Al N硬质膜 ,可使其在钻削过程中具有优异的耐磨、减摩和耐高温等性能 。展开更多
Nanocomposites of zinc/bentonite clay were synthesized for use as an antibacterial material by a quick and simple alkaline ion exchange method. The synthesis of zinc doped bentonite nanocomposite was accomplished by p...Nanocomposites of zinc/bentonite clay were synthesized for use as an antibacterial material by a quick and simple alkaline ion exchange method. The synthesis of zinc doped bentonite nanocomposite was accomplished by placing bentonite in a melting bath of ZnSO4 for 10, 20, 40, 60 and 90 rain. The complexes were characterized by XRD, SEM and DRS. XRD analyses and SEM observations confirmed the diffusion of zinc to the clay surfaces. Antibacterial activity tests against Escherichia coli showed that bentonite did not present any antibacterial properties, but after alkaline ion exchange treatment, inhibition was noted. The highest antibacterial activity was observed with ZnO/bentonite composite alkaline ion exchange for 60 and 90 rain. Interestingly, the leaching test indicated that ZnO/bentonite did not present any risk for drinking water treatment.展开更多
A simple strategy to prepare a hybrid of nanocomposites of anatase TiO2/graphene nanosheets （GNS） as anode materials for lithium-ion batteries was reported.The morphology and crystal structure were studied by X-ray ...A simple strategy to prepare a hybrid of nanocomposites of anatase TiO2/graphene nanosheets （GNS） as anode materials for lithium-ion batteries was reported.The morphology and crystal structure were studied by X-ray diffraction （XRD）,field emission scanning electron microscopy （FE-SEM） and transmission electron microscopy （TEM）.The electrochemical performance was evaluated by galvanostatic charge-lischarge tests and alternating current （AC） impedance spectroscopy.The results show that the TiO2/GNS electrode exhibit higher electrochemical performance than that of TiO2 electrode regardless of the rate.Even at 500 mA/g,the capacity of TiO2/GNS is 120.3 mAh/g,which is higher than that of TiO2 61.6 mAh/g.The high performance is attributed to the addition of graphene to improve electrical conductivity and reduce polarization.展开更多
文摘利用摩擦学试验及 XPS测试考察了非平衡纳米复合等离子体镀膜技术沉积的 Mo S2 基纳米复合薄膜的抗潮湿性和耐磨寿命等 .结果表明 ,在相对湿度 (RH)为 6 0 %～ 70 %的环境下储存后 ,Ti N- Mo S2 薄膜的摩擦学性能迅速降低直至失效 ;而 Ti N- Mo S2 / Ti和 Ti N- Mo S2 / Ti N复合膜的抗潮湿性能显著提高 .因而 Ti和 (或 ) N2 的适量添加显著增强了 Mo S2
文摘在 NCU PP技术沉积的 Ti N- Mo S2 / Ti N复合膜中添加 A1元素并改变部分沉积工艺 ,可以在 1Cr18Ni9Ti基体上沉积出 Ti Al N - Mo S2 / Ti Al N硬质润滑膜 .利用 SEM,XPS等手段研究涂层的成分、微观结构等 .通过摩擦学试验测定其结合强度等性能 .结果表明 ,在钻头上沉积 Ti Al N- Mo S2 / Ti Al N硬质膜 ,可使其在钻削过程中具有优异的耐磨、减摩和耐高温等性能 。
文摘Nanocomposites of zinc/bentonite clay were synthesized for use as an antibacterial material by a quick and simple alkaline ion exchange method. The synthesis of zinc doped bentonite nanocomposite was accomplished by placing bentonite in a melting bath of ZnSO4 for 10, 20, 40, 60 and 90 rain. The complexes were characterized by XRD, SEM and DRS. XRD analyses and SEM observations confirmed the diffusion of zinc to the clay surfaces. Antibacterial activity tests against Escherichia coli showed that bentonite did not present any antibacterial properties, but after alkaline ion exchange treatment, inhibition was noted. The highest antibacterial activity was observed with ZnO/bentonite composite alkaline ion exchange for 60 and 90 rain. Interestingly, the leaching test indicated that ZnO/bentonite did not present any risk for drinking water treatment.
基金Project(Y4110230)supported by Natural Science Foundation of Zhejiang Province,ChinaProject(51204146,51101140)supported by the National Natural Science Foundation of ChinaProject(2012M521197)supported by Postdoctoral Science Foundation of China
文摘A simple strategy to prepare a hybrid of nanocomposites of anatase TiO2/graphene nanosheets （GNS） as anode materials for lithium-ion batteries was reported.The morphology and crystal structure were studied by X-ray diffraction （XRD）,field emission scanning electron microscopy （FE-SEM） and transmission electron microscopy （TEM）.The electrochemical performance was evaluated by galvanostatic charge-lischarge tests and alternating current （AC） impedance spectroscopy.The results show that the TiO2/GNS electrode exhibit higher electrochemical performance than that of TiO2 electrode regardless of the rate.Even at 500 mA/g,the capacity of TiO2/GNS is 120.3 mAh/g,which is higher than that of TiO2 61.6 mAh/g.The high performance is attributed to the addition of graphene to improve electrical conductivity and reduce polarization.
