Materials Literature
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Oleic acid modified Fe3O4 nanoparticles( OA-Fe3O4) with uniform particle size were blended with polystyrene-b-poly( 2-vinyl pyridine)( PS-b-P2VP) that had micro-phase separation structure using solutionmixing method. The resultant PS-b-P2VP / Fe3O4nanocomposites were superparamagnetic. The results showed that OA-Fe3O4…
The physical and chemistry properties of TiNi shape memory alloy and TC4 titanium alloy are quite different,so the weldability is poor and a number of intermetallic compounds and cracks will produce in the weld seam.To achieve good joining of TiNi shape memory alloy and TC4 titanium alloy and improve the welded joint…
As mild steels are the most widely used structure materials,it is no doubt that the study on their atmospheric corrosion mechanism is of great significance.Traditional study on atmospheric corrosion of mild steels emphasized more on on-site experiments and data collection and physical analysis.Relatively,application o…
Trifluoroacetate metal organic deposition(TFA-MOD) is one of the most promising technology routes for fabrication of YBa2Cu3O7-δ(YBCO) coated conductors. In this paper, high-boiling point organic solvent diethanolamine(DEA) was added to modulate and to improve the properties of precursor solution by suppression the de…
In this work, we introduce a modified novel silica sol-gel process to synthesize hexagonal close-packed (hcp) and face-centered cubic (fcc) nickel (Ni) nanoparti- cles supported on amorphous carbon and silica matrix. The supporting of amorphous carbon and silica can prevent the Ni nanoparticles from aggregating and be…
Multilayer films based on graphene oxide (GO) and multiply-alkylated cyclopentanes (MACs) have been fabricated successfully on silicon substrate via both self-assembled and dip-coating technologies. Given the excellent mechanical properties and frictional properties of GO, the resulting multilayer films composed of GO…
Non-covalent composites of porphyrin-carbon nanomaterials play an important role in both research and application areas of optoelectronic devices,catalysis,bio-medicine,etc.This review covers the recent process in non-covalent interactions between porphyrins and carbon nanomaterials,and focuses on the structural depen…
Polysiloxane 乳胶被 octamethylcyclotetrasiloxane (D4 ) 的微乳液聚合作为一个开始者作为 cationic emulsifier 和钾水合物与 octadecyl trimethyl 铵氯化物当 co 使乳化不在时准备。粒子尺寸被散布的动态光(DLS ) 决定技术和聚合的反应率被讨论。而且，动力学被一个起始率的方法学习，并且聚合变换上的单体， emulsifier 和开始者集中和温度的效果被调查。从运动结果，聚合的率，在 80 牡 ? 敤楲敶 ? 牦浯樠癵湥汩 ? 慭浧獡 ? 睔 ? 楺' 詼珫 P 慲湩 ? 慤整 ? 瑡㈠的 R p？？
。在另一方面，阶段分离率的减少被泥土的机械障碍效果在混合矩阵的 macromolecular 散开上引起。因此，阶段分离的热力学和动力学上的如此的看起来违反直觉的结果被归因于不同主导的因素。
Nanoparticles TiO2 were prepared by hydrothermal method using precursor tetrabutyl titanate. The Pd/TiO2/C catalyst was synthesized by liquid phase reducing method supported on nano TiO2and Vulcan carbon XC-72. The Pd/TiO2/C catalyst was characterized by XRD, TEM, cyclic voltammetry, and chronopotentiometry. XRD confi…
In this study, the potency and implications of bacteria growth, H2S and FeS production in microbially induced corrosion of oil pipelines were done using 5 biocides. Hydrogenase test was carried out and used to detect the presence of micro-organism that causes corrosion in the pipeline samples. The biocides were then c…
Carbon nanotubes(CNTs) provide a technical foundation for the development of multifunctional thermally conductive materials; in particular, CNTs' excellent thermal, electrical, and mechanical properties provide the basis for these developments. This paper reviews the state of research investigating the application of…
Montmorillonite (MMT) and rectorite (REC) are clay minerals that consist of hydrated aluminum silicate with Si-O tetrahedrons on the bottom of the layer, Al- O(OH)2 octahedrons on the top, and various exchangeable ions such as Na ? and Ca 2? in interlayer. However, the driving force for intercalation of double-strande…
Density functional theory(DFT) calculations were used to study the adsorption of noble metal(Pt) on deprotonated 1,3-dipolar cycloaddition graphene to explore the mechanism of the formation of metal nanowires.The results show that:(1) Pt atoms that adsorb on 1,3-dipolar cycloaddition graphene induce the deprotonation…
这研究集中于硼增加的效果，在到 0.03wt% 的 0.0007wt% 的范围，在微观结构和方向性地团结的 superalloy 的压力破裂性质上。与在当演员组合金增加硼内容，最容易溶解的 / 的部分有增加，块硼化物在 / 附近猛抛最容易溶解。在 0.03wt% 的一个高硼内容，有薄片状的硼化物的降水。在热处理之上，好块硼化物趋于与增加硼内容在谷物边界猛抛。总的来说，方向性地团结的 superalloy 的破裂生活显著地与硼的名字的内容的增加被改进。然而，当硼内容超过 0.03wt% 时，破裂生活减少。
A micro /nano-structure surface which composed of organic materials and ZnO nanohairs was obtained by replica method and hydrothermal method. The cycle of the micro-structure is about 300 μm and the height of micro-structure is about 70 μm. The length and diameter of nano-structure are 2—3 μm and 300—500 nm,respective…
YBa2Cu3O7-d (YBCO)-coated conductors have wide-ranging potential in large-scale applications such as superconducting maglev trains and superconducting elec- tric cables, but low current carrying capability restrains the practical application of YBCO-coated conductors at high temperatures and high magnetic fields. It i…
This article reports fracture in hard films on a soft substrate under conical indentation. A diamond-like carbon( DLC) film was deposited onto a poly-ether-ether-ketone( PEEK) substrate using plasma chemical vapor deposition. Nanoindentation was performed on the film surface,in the meanwhile,load and depth data were r…
A TiAlCN coating was prepared on the surface of Cr12MoV steel with cathodic arc ion plating.The surface-interface morphologies,chemical element distributions,and phases of the TiAlCN coating were analyzed with a Scanning Electron Microscope(SEM),an Energy Dispersive Spectrometer(EDS)and an X-ray Diffractermetry(XRD),r…
Using Suzuki coupling reaction,a novel blue-emitting anthracene-based derivatives was designed and synthesized by introducing the electron transport branch of oxadiazole derivatives. The optical properties,thermal properties,electrochemical properties,and surface morphology of the compound were characterized. The maxi…