纳米技术

In this project, the selection criteria of matrix and reinforcement for obtaining composites with high strength and toughness are determined. The as-cast and aged microstructures of composites reinforced with particles of different strength are observed, and their metallurgical conditions and stabilization mechanisms are analyzed. The aging precipitation behaviors and mechanisms are studied. Some characteristics of nano-materials (micro-distortion areas) are found in 150nm- Al2O3p/Al composites and their formation mechanisms are expatiated. The "flexible" restriction to the deformation of the matrix by low strength AlN particle is observed by in-situ TEM and SEM techniques, and the mechanisms of its resist on cracks propagation and its contribution to composite strength are revealed. The high temperature deformation behaviors of Al2O3p/Al composites are studied. A rare-earth coating is established on sub-micron Al2O3 particles, leading to an improvement in wettability between coated Al2O3 and liquid aluminum and a decrease in infiltration pressure. The strength and ductility of coated particles reinforced composite are also increased. The interfacial characteristics, bonding structures and their formation mechanisms are studied, and the crystal orientation relationships between reinforcement particles and aluminum matrix are investigated. Finally a lighter composite with better balance of strength and damping properties is reinforced with hollow ceramic microballoons of ultra-lower strength.

本项目发现了获得高强度和高韧性复合材料的基体、增强体选择依据；观察了各种强度质点增强复合材料的铸态和时效态微观组织，分析其微观结构形成的金属学条件及稳定性机理，研究了其时效析出规律和时效机制，发现了150nmAl2O3颗粒增强铝基复合材料基体中的纳米材料特征，并解释了其形成机理；利用TEM和SEM动态拉伸技术发现了低强度质点AlN颗粒对变形协调的&柔性强化&机制，揭示了其对裂纹扩展的阻碍作用和对复合材料高强度的贡献；研究了中强度质点的Al2O3颗粒增强铝基复合材料的高温变形行为，并对其进行了稀土界面层设计与制备，改善了颗粒与铝合金之间的界面润湿性，降低了复合材料铸造渗透压力，提高了复合材料的强、韧性；研究了多种复合材料界面结构及形成机理，确定了增强体与基体之间的界面结合机制，分析了复合材料界面处的晶体学位向关系；最后制备了含微孔的中空型陶瓷颗粒增强的特种复合材料，得到了强度和阻尼综合性能较好的轻质复合材料。

Ecosynthetix bases its technology on converting these granules into ones just 50 to 150 nanometers or billionths of a meter large.

Ecosynthetix的技术基础就是将这些粒子的大小转换成为50到150纳米，也就几十亿分之一米。

The Ni-based alloy was cladded on the T10 steel surface by laser cladding technology, and the changes of microstructure and properties of Ni-based alloys by adding WC hard phase and nano-rare earth oxides La2O3 were studied.

中文摘要：采用激光熔覆技术在T10钢表面激光熔覆Ni基合金，并研究了在Ni基合金中加入WC硬质相、纳米稀土氧化物La2O3后的性能和组织结构的变化情况。

In reference to ASTM water accommodation friction for preparing ecotoxic testing sample solution,the ecotoxicity of four kinds of nanometal additives were inspected and evaluated by applying luminescent bacteria .

采用发光细菌毒性测试技术，参照ASTM的WAF方法制备油类生物毒性测试样品液，对Cu、A、lZn、Ti 4种纳米金属添加剂的生物毒性进行了检测与评价。

In this dissertation, extra-fine nanocrystals, nanorods and thin films of perovskite oxides were investigated in detail on their structural, phonon and nonlinear optical characteristics.

本文选取几种重要的钙钛矿氧化物，对其纳米结构材料的制备技术、结构特性、光谱和非线性光学性质进行了研究，取得了如下有意义的结果： 1。

After 80 cycles, the loss of capacity was 6.5%. The study of this project can support the development and apply of new compound oxides for Li-ion battery and gas sensitive materials.

该项目研究为新型电池材料纳米复合氧化物、气敏材料等的开发及应用提供了技术支持。

The hardnesses of 9Cr18 and DLC, determined by nanoindentation, are approximately 8GPa and 60GPa respectively; their elastic moduli are approximately 250GPa and 600GPa respectively.

为了检测成膜质量，在较宽的载荷范围内分别使用显微硬度、纳米压痕和划痕技术表征9Cr18钢和DLC/9Cr18的机械和摩擦性能。

In particular, a process for the synthesis of nanopowders of various materials such as metals, alloys, ceramics and composites by induction plasma technology, using organometallic compounds, chlorides, bromides, fluorides, iodides, nitrites, nitrates, oxalates and carbonates as precursors is disclosed.

具体地，公开了一种通过感应等离子体技术合成各种材料，例如金属、合金、陶瓷和复合物的纳米粉末的工艺，使用有机金属化合物、氯化物、溴化物、氟化物、碘化物、亚硝酸盐、硝酸盐、草酸盐、碳酸盐作为前驱体。

Adopting compound techniques of inorganic nanometer, sol-gel techniques and ultraviolet absorbers are used to obtain new protective materials of hydroxybenoic ketone, benzotriazole and polyvinyl alcohol for the protection of historical relics .

采用无机纳米复合技术，利用溶胶-凝胶方法的分配交联和紫外线吸收剂的添加等工艺手段，筛选出适于文物保护环境的防紫外线照射，又不影响文物展示效果的羟基苯酮类、苯并三唑类及能有效消除弦光，又不影响观赏效果的聚乙烯醇类新型防护材料，以便用以不同环境下的文物保护工作。

Rapid progress in semiconductor technology makes microscale/nanoscale structures and devices more and more common.

随着半导体技术的飞速发展，器件的尺寸已进入到微/纳米尺度。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷