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For the development of ceramic candidates for thermal barrier coatings, two kinds of new ceramics, Y3Ce7Ta2O23.5 and Yb3Ce7Ta2O23.5, were synthesized by sintering at 1873 K for 10 h. The obtained samples were composed of a single fluorite-type phase, and their relative densities are greater than 90%. Because of phonon scattering caused by the complex lattice, the large number of oxygen vacancies, and substituted atoms, the thermal conductivity is lower than that of 8YSZ. The coefficients of thermal expansion (CTEs) of these two products are located in the range of 10.22–12.57 × 10−6/K and 9.62–12.66 × 10−6/K, respectively, from 323 K to 1473 K, and they also exhibit excellent phase stability up to 1473 K. However, their thermal conductivities and CTEs are lower than those of RE2Ce2O7 (RE = La, Nd, or Sm).

In this present paper, two kinds of Ln2BTaO7 (Ln=Sm, Gd) oxides were prepared by solid state reaction at 1873 K for ten hours. The phase-composition, microstructure and thermophysical performances of sintered samples were studied. Results show that the synthesized Ln2BTaO7 oxides present onefold orthorhombic weberite lattice. Due to the phonon scattering resulted by complex crystal-lattice and numerous oxygen vacancies, the heat conductivities of obtained products are less than that of YSZ. Because of the low ionic radius of Sm3+ ions，the heat expansion quotiety of Sm2LaTaO7 is greater than that of Gd2LaTaO7.

Nanostructure LiFeBO3/C composite is synthesized by sol–gel method using CH3COOLi·2H2O, Fe(NO3)3·9H2O, H3BO3 and citric acid as starting materials. The crystal structure, morphology and electrochemical properties of LiFeBO3/C composites are characterized by X-ray diffraction, transmission electron microscopy, raman spectroscopy (Raman), cyclic voltammetry, electrochemical impedance spectroscopy and charge–discharge tests. The LiFeBO3/C is comprised of individual near spherical particles of the size range 40–60 nm, and well coated by thin carbon layer. The LiFeBO3/C can deliver an initial discharge capacity of 205.8 mAh g−1 under the current density of 10 mA g−1 in the potential range 1.8–4.5 V, and it can deliver the capacity of 159.3 mAh g−1 after 20 cycles. When the current density is increased to 20 and 40 mA g−1, the capacity of LiFeBO3/C could also be retained at 120.6 and 102.6 mAh g−1. The excellent cycling performance indicates, the materials have good application prospect. The morphology and size of the sol-gel synthetic LiFeBO3 materials are characterizedby TEM were shown in the Figure. It can illustrate that the LiFeBO3/C consists of individual near spherical particles of the size range 40∼60 nm. With further investigate by HR-TEM that LiFeBO3/C showed clear crystal lattice stripes and a uniform carbon film is coated on the particle surface.

As a new kind of active flow control technology, plasma flow control has a bright future, for its simple structure, fast response, and wide frequency band. The wind tunnel and flight tests were conducted with microsecond dielectric barrier discharge on a glider. For the tests, the microsecond pulse power supply and remote control system were designed and built. In the wind tunnel test, the flow separation on the glider wing surface can be controlled effectively, and static pressure at the leading edge pressure is decreases by 177%. The flow control effects under different pulse frequencies are compared, and the optimal pulse frequency for actuation is found to be 100 Hz. A significant hysteresis effect was observed with microsecond dielectric barrier discharge at small angle of attack (α ≤ 18°), which means the flow control effect can last more than 300 s after turning off the plasma actuation. In the flight test, the maximum roll angle decreases by 7.0°, and the maximum aileron deflection angle decreases by 9.4° with plasma actuation at both sides of the wing, which means the glider becomes more stable with microsecond dielectric barrier discharge. With unilateral actuation, the rolling moment generated by the plasma actuation is larger than that produced by the ailerons with the angle of attack within 12.94° ≤ α ≤ 29.77°, which shows strong rolling control ability of microsecond dielectric barrier discharge. The wind tunnel and flight tests results verified the flow control effect of microsecond dielectric barrier discharge, and paved the way for the plasma flow control technology to practical applications.

A actuation system composed of actuators, circuit board, and microsecond pulse power has been designed to conduct pulsed surface arc discharge (PSAD) actuation. The instantaneous impulse energy of PSAD is higher than that of typical dielectric barrier discharge. Schlieren imaging and particle image velocity (PIV) technique have been used to characterize the flow field changes caused by actuation in quiescent air. A localized pressure wave is induced by every actuation, propagating in the air almost at the speed of sound. Special emphasis is given on the hot air mass observed in schlieren imaging, generating thermal convection disturbances in the flow field. A pair of a weak reverse vortex is generated after discharge for each actuator, with the maximum propagation velocity of 0.1 m/s. The induced burst perturbations indicate that the mechanism of plasma flow control based on PSAD is instantaneous heat release generated by PSAD actuation. Wind tunnel experiments were conducted on a 30 ° sweep delta wing to investigate the aerodynamic control effects by using PSAD actuation. The 12-channel PSAD actuation can effectively improve the aerodynamic performance of the delta wing, delay the angle of attack from 14 ° to 18 ° and increase the maximum lift coefficient by 12.9%. In this article, PSAD actuation has the ability to control low speed fluid flow separation by releasing very strong discharge power.

LiMnBO3 and its carbon coated material LiMnBO3/C were synthesized by a microwave method. The influences of sintering temperature and feed composition on the structure and the morphology of materials were investigated. XRD, SEM and HR-TEM were used to characterize the structure and the morphology of the materials. The electrochemical properties of materials were tested by constant charge-discharge and electrochemical impedance spectroscopy. The results show that LiMnBO3 has a hexagonal crystal structure (h-LiMnBO3). The good crystalline structure with small grain size can be obtained under the reaction conditions of 750 °C, 25 min and nLi:nB:nMn=1:1:1(molar ratio). The charge-discharge capacity and the conductivity of the carbon coated material are enhanced after carbon coating. The initial discharge capacity of LiMnBO3/C is 50.3 mAh/g.

A compact polarization beam splitter (PBS) based on a silicon waveguide-silver nanoribbon-silicon waveguide is proposed and demonstrated numerically by utilizing the evanescent coupling between a strip-nanowire and a nanoslot waveguide. Two-dimensional (2-D) FDTD simulations were performed to elucidate the properties of surface plasmon polaritons (SPPs) in this device made from silicon-metal-silicon, and were found to agree well with the theoretical predictions. TE and TM polarized light are respectively separated into two different output ports of Y-shaped silicon waveguide in which the coupling efficiency is 62% and 45% for 1.55μm wavelength, respectively. The proposed PBS structure could be utilized to develop ultracompact optical polarization modulating device for large-scale photonic integration and optical information processing.

Two types of lanthanide thiolato-carboxylate complexes, [Type I: [Yb(dtba) (Hdtba)]n (1), Type II: [Ln(dtba)1.5(biim)]n (Ln = Pr (2a), Nd (2b), Sm (2c), Eu (2d), Gd (2e), Tb (2f), Dy (2g), H2dtba = 2,2′-dithiodibenzoic acid, bimm = diimidazole)] have been obtained by hydrothermal method and characterized by the single-crystal X-ray diffraction, IR, 2D-COS IR, TG and the luminescence analysis. The H2dtba ligand came from the in situ S–S function reaction of 2-mercaptobenzoic acid (H2mba) under the hydrothermal condition. Complex 1 is a 2D bamboo-like sqr-topology layered structure, and the 3D (4, 4, 6)-connected supramolecular frameworks is produced by the hydrogen bonds of O–H···O. Complexes of type II (from 2a to 2g) are isostructural and they are assigned to 1D rope-like chains by introducing the chelating ligand of diimidazole. These 1D rope-like chains are further linked by N–H···O hydrogen bonds into a 3D supramolecular framework with CdSO4-type topology. Photoluminescence studies reveal that complexes 2b, 2c, 2d, 2f, 2g exhibit strong lanthanide characteristic emission bands in the solid state at room temperature.

For hard, brittle and difficult-to-cut materials, the technology heating auxiliary grinding has a significant role in improving productivity and reducing costs. Using different thermal loads and different ways of cooling to load granite,we carried out surface grinding experiments. We tested and analyzed variation of the grinding force and specific grinding energy. The results showed that strengthening the thermal load continuously, the grinding force and specific grinding energy reduce. This phenomenon significantly improves grinding efficiency and reduces the wear of wheel. Studies have shown that the auxiliary heating has an important contribution to enhance the production capacity of the stone processing.

Experimental system of CCD real-time acquisition is developed according to high temperature property of plasma jet. Mathematical model of gray image and jet temperature distribution is established and basic principles of the CCD collection is analyzed. It realizes acquisition by a common image acquisition card in LabVIEW environment and real-time display of jet. Jet is collected on the computer image processing by using IMAQ Vision, and it intuitive analyzes the shape and temperature distribution according to pseudo-color image processing results of the jet temperature field. Experimental results deepen understanding of the complex nature of plasma jet, which have a guiding significance on the plasma technology in materials processing application.

This paper studies the thermal interaction of Ni particle and Al particle setting in the carbon steel surface using ANSYS software by finite element numerical simulation. It highlights the temperature-time change of feature points that are at different locations of flattened particles and substrate, and micro-contact heat transfer of particle and substrate surface is also analyzed. The results help to study residual stress distribution of a splat particle in the plasma spray forming, which further provide an important basis for improving the quality of the coating.

Splat deposition is an important part influencing coating quality in plasma spray forming. Flatten behavior of a single Ni droplet falling on a smooth substrate is evaluated by numerical simulation of ANSYS software, this paper meanwhile researches a single Ni particle deposition in the surface of flattened Al2O3 sheet and thin Al particles, the impact factors of particles flattening and the mechanism of the interaction between particles are also studied. The results have benefit to improving the coating porosity and bond strength between particles.

Polyaniline doped with camphor sulfonic acid, poly(2,5-dimethoxyaniline) and their copolymers were synthesized by interfacial method. The FT-IR spectra, UV-Vis absorption spectra and X-ray diffraction patterns were used to characterize the molecular structures of the polymers. The morphology of the polymers was studied by using SEM and TEM. Voltammetric study was done to investigate the electrochemical behavior of these polymers. The results show that the polymers were in microscale with the different shapes such as rod, flake and sphere, respectively. All the homopolymers and copolymers had a poor crystallinity. The conductivity of the copolymers of aniline with 2,5-dimethoxyaniline decreased with increase of 2,5-dimethoxy-aniline molar content.

Pulse electrochemical polishing is an important method to improve the surface quality of metal sheet. The reasonable control of process parameters is the key to obtain high-quality polishing. In this paper mechanism of pulse electrochemical polishing of stainless steel were studied using the stainless steel sheets of SUS201, SUS202, and SUS304. The influence of the current density, pulse frequency, duty cycle, and other factors on surface roughness were examined, and the optimal parameters was determined. The research results have directional meaning to the scale polishing of stainless steel-based in manufacturing enterprise.

In this paper the influence of gypsum-water ratio, filler types and calcination temperature on gypsum bending strength were analyzed by the means of experiments. Spiral-shaped gypsum mold was made by gypsum molding material and mobility experiment was conducted on Pb-Sn alloys. Compared with pure gypsum, gypsum mixture had better mechanical properties. The fluidity of the alloy in the gypsum mold was prone to casting pressure, pouring temperature and alloy ratio. The research results have benefit to the development of gypsum casting technology.

Zinc-alloy with low melting point can be easily sprayed directly on the production surface to fabricate a mould with high precision by arc spraying. But the zinc-alloy mould has the disadvantage of easy invalidation due to its relatively low hardness and poor anti-wear property. In this paper, the surface modification of zinc-alloy tooling by composite electro-brush plating was researched. The joining mechanism between the plating film and sprayed coating was investigated, and the law of quality control on the unification of rapid tooling and surface modification was revealed. A new modification technology possessing the advantage of economical and high quality surface relating to moulding was developed with independent intellectual property right.

A 1-D helical tubular cadmium coordination polymer, [Cd(H2Me4bpz)(H2bidc)2]n (1, H2Me4bpz = 3,3',5,5'-tetramethyl-4,4'-bipyrazole; H3bidc = benzimidazole-5,6-dicarboxylic acid) was hydrothermally synthesized and characterized by means of elemental analyses, PXRD, IR, 2D IR correlation spectra, solid UV, TG analysis, luminescence spectroscopy and single crystal X-ray diffraction. The crystal structure of 1 is a unique example of a 1D helical tube-in-tube structure. Interestingly, the [Cd(H2Me4bpz)] coordination helical tube is included in the [Cd(H2bidc)] supramolecular helical tube with the same handness. The compound displays a green luminescence upon excitation at 397 nm.

Two novel 2D Ln-Cd HMOFs [Ln2Cd3(EDTA)3(H2O)11](H2O)14 (Ln = Sm 1; Eu 2; H4EDTA = ethylene diamine tetraacetic acid) based on nanosized heart-like Ln6Cd6O12 wheel-clusters were hydrothermally synthesized and characterized. The luminescence sensing of 2 to the polarization and concentration of cations was discussed.

The use of membranes as solid supports for protein adsorptions is a new approach and can be a good alternative to the use of traditional gel columns especially on large scale purification processes. Functionalized membranes, such as affinity and ion exchange membrane cartridges and modules suitable for laboratory and industrial applications have been developed commercially based on the advances in membrane fabrication and surface modification technologies [1].