摘要：Co87Nb10Zr3,Co76Nb19Zr5,Co64Nb26Zr10 and Co64Nb16Zr20 amorphous films were deposited on noncrystalline glass substrates by DC unbalanced magnetron sputtering. The compositions of amorphous films were tailored in the light of the individual deposition rate of Co,Nb and Zr. The amorphous films with the anticipated composition were prepared by means of co-sputtering Co,Nb and Zr targets simultaneously. It is indicated that there is interaction among three targets during co-sputtering. The morphology and composition of the films were observed by SEM,AFM and EDS. The structure and magnetic property were measured by XRD and physical property measurement system(PPMS) . The coercivity changes with the composition,varying from 240 to 1 600 A/m. After vacuum isothermal annealing at temperatures of 475,500,525 and 550 ℃ for 15 and 30 min,respectively,it is found that high Nb content is beneficial to improving thermal stability of amorphous films. The crystallized films have the mean grain size of 2-19 nm.

摘要：This ranearch is focused on the, develonment of a simnle design model of the submerged catalysis/membrane filtration （catalysis/MF） system for phenol hydroxylation over TS-1 based on the material balance of the phenol under steady state and the reported kinetic studies. Based on the developed model, the theoretical phenol Conversions at steady state could be calculated using the kinetic parameters obtained from the previous batch experiments. The theoretical conversions are in good agreement with the experimental data obtained in the submerged catalysis/MF system within relative error of ±5%. The model can be used to determine the optimal experimental conditions to carry out the phenol hydroxylation over TS-1 in the submerged catalysis/MF system.

摘要：这份报纸拿在作为主要科学问题设计构造和生态系统变化之间的相互作用。基于 DPSIR ( Drive-Press-State-Impact-Response )框架，这研究分析在从开车，出版社，状态，影响和反应的方面设计构造和生态系统变化之间的相互作用的通匝，向前带相互作用模型，相互作用情形分析方法和相互作用索引(开车反应索引， IIDR ，开车影响索引， IIDI ，影响反应索引，红外，影响索引， IIII )，并且预付相应计算模型和相互作用索引 sy 并且也，这份报纸采用不同相互作用索引到尊重影响在上和对设计建设的反应，并且作为例子在纵的范围峡区域(LRGR ) 拿 Manwan 水力发出的电力车站和道路交通建设分析并且验证相互作用模型。由建设的结果和 Manwan 水力发出的电力的操作的系统的分析，车站是分别地 3.67， 3.92， 14.35 和 0.35。没有在相互作用系统，和利用的通匝元素的显著变化水力发出的电力车站基于想象有益于地区性的环境和社会的持续发展没有考虑环境费用，散开效果，潜在的否定效果和潜力，水力发出的电力的回答驻扎建设。通过一些案例研究，我们造了的相互作用模型在相互作用显示出很好的实际价值量的分析并且相互作用索引系统构造。

摘要：The constitutive modeling and springback simulation for AA2524 sheet in creep age forming（CAF） process were presented.A series of creep aging tests were performed on AA2524 at the temperature of 180-200 °C and under the stress of 140-210 MPa for 16 *** on these experimental data,material constitutive equations which can well characterize creep aging behaviors of the tested alloy were *** effect of interior stress distributed along the sheet thickness on springback was simulated using FE software *** by compiling the established constitutive models into the user *** simulation results showed that the amount of sheet springback was 61.12% when merely considering tensile stress existing along the sheet thickness;while sheet springback was up to 65.93% when taking both tensile and compressive stresses into *** addition,an AA2524 rectangular sheet was subjected to CAF experiment in resistance *** springback value of the formed rectangular sheet was 68.2%,which was much closer to 65.93%.This confirms that both tensile and compressive stresses across the sheet thickness should be considered in accurately predicting springback of the sheet after forming,which can be more consistent with experimental results.

摘要：The problem of non-fragile H∞ filtering for a class of linear systems described by delta operator with circular region pole constraints is *** purpose of the paper is to design a filter such that the error filtering system not only satisfies the prescribed circular pole constraints or D-stability constraint,but also meets the prescribed H∞ norm constraint on the transfer function from the disturbance input to the estimation *** filter gain to be designed is assumed to have multiplicative gain variations.A sufficient condition for the existence of such a filter is obtained by using appropriate Lyapunov function and linear matrix inequality (LMI) technique.A numerical example is provided to demonstrate the effectiveness and less conservativenes of the proposed design.

摘要：Anisotropic polyaniline （PAni） plates decorated with self-aligned nanofiber arrays were synthesized under the hydrothermaI conditions. The formation mechanism of the self-assembled structures was investigated by studying the effect on PAni micro-structure with additive electrolyte in reaction system, and numerical simulation for dependence of systematic electrostatic energy on cross angles of self-assembled nanofiber arrays in grid textured PAni plates. It is proposed that the electrostatic interaction based on ionic doping charges plays an important role in the formation of the self-assembled PAni structures.

摘要：To increase efficiency and improve performance, reducing cost and emissions, advanced single crystal Ni-based superalloys are required in aerospace propulsion and power generating gas turbines. With the development of alloy, significant improvements in casting techniques have been achieved by introducing the directionally solidified （DS） casting process followed by single crystal （SX） technique. The deviation of preferred orientation of single crystal superalloys is one of the most important defects in casting. In directional solidification equipment with high temperature gradient, single crystal specimens of DZ417G alloy were prepared successfully by the modified Bridgeman method with spiral grain selector. The orientation was investigated by means of X-ray diffraction （XRD） and electron backscattered diffraction （EBSD）.The results show that the crystal selector with a smaller angle can effectively reduce the deviation of preferred orientation.

摘要：The nominal Ti44Al6Nb1.0Cr2.0V alloy was newly designed and prepared by vacuum consumable melting technique with the ingot sizes of d225 mm×320 mm. The results show that the average lamella colony size is 780-1830 μm. This as-cast alloy has a modified near lamellar(M-NL) structure that is composed of mainly larger(α2+γ) lamella colonies and smaller(B2+equiaxed γ) blocky morphology. It exhibits the moderate tensile properties at room temperature, in which the Region(5) yields the ultimate tensile strength(UTS) about 499 MPa and the elongation about 0.53%. The obvious brittle fracture characteristics and trans-granular interlamellar fracture are the predominant modes. After room temperature tensile testing, there are some <101] and a few 1/2<112] superdislocations in the γ phase. The as-cast microcrack is the main factor to deteriorate the tensile property, which results in the premature fracture, poor ductility and few dislocations. The addition of Nb, Cr and V can decrease stacking fault energy(SFE) obviously, which is helpful to enhancing the ductility of the alloy.

摘要：The objective of the present paper is to study the sweep effect on the blade design performance of a transonic compressor *** baseline to be modified and swept is a designed well efficient transonic single rotor compressor. The first part of the present study is concerning the sweep effect with straight leading *** this case fixing the hub section the swept blade is formed by tilting the leading edge with whole blade forwards and backwards *** second part is to use an optimization strategy with simple gradient-based optimum-searching method and multi-section blade parameterization technique to search and generate an optimal swept rotor with curved arbitrary leading *** adiabatic efficiency is a little bit greater than that of the reference un-swept rotor.

摘要：The hot forging of large-scale P/M TiAl alloy billet deformation was investigated based on a joint application of Deform-3D-based numerical simulation and physical simulation *** temperature dependence on the thermal and mechanical properties of the billet was considered and the optimum hot working temperature of packed TiAl alloy was 1150-1200 °*** on the simulation,the material flow and thermo mechanical field variables,such as stress,strain,and temperature distribution were obtained and the relationships of load—displacement and load—time were figured *** verify the validity of the simulation results,the experiments were also carried out in a forging plant,and a pancake with diameter of 150 mm was obtained exhibiting a regular shape.