Materials Literature
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The solidification microstructure has an important effect on the mechanical properties of castings. Therefore, an FE (Finite Element) – CA (Cellular Automaton) coupling model was developed for the simulation of solidification structure during the continuous casting process of 72A tire cord steel. In the model, the eff…
Visualization method of metal grain boundaries was developed with a short pulse laser.This visualization method was required for selecting grain in local heating system with a continuous wave (CW) fiber laser for controlling grain structures.Two kinds of short pulse lasers, nanosecond and femtosecond lasers, were used…
This project aims to optimize the process parameters for fabricating Poly (L-Lactide-co-ε-Caprolactone) (PLCL) electrospun scaffolds to achieve fiber diameters within the ranges of ~500nm, 500nm~1µm and 1~3µm. Electronspun PLCL solutions of different concentrations (4wt% - 12wt%) were prepared using chloroform and dim…
An energetic helium neutral beam is involved in the beam neutralization measurement system of alpha particles confined in a DT fusion plasma. A full size strong-focusing He(+) ion source (2 A, the beam radius of 11.3 mm, the beam energy less than 20 keV). Present strong-focusing He(+) ion source shows an emittance dia…
The effect of Y and Zn substitution on tensile properties of 6H-type ABCBCB LPSO phase in Mg97Zn1Y2alloy has been studied from first principles calculations. From obtained tensile stress-strain relations, at small strains anisotropy of Young’s modulus for Mg95Zn is larger than that for Mg95Y, whereas at lager strains…
In the present work, the electrochemical behaviour of Mg–xCe–1Zn (x = 3, 8 and 13 wt-%) alloys has been investigated. The alloys were fabricated using an induction melting method under an argon atmosphere. Potentiodynamic polarisation was carried out in 3·5%NaCl solution of pH 7·2 at room temperature to evaluate the c…
Hysteresis motors are mainly used for some applications that need very smooth torque from starting to synchronous speed such as gyroscope and gas centrifuge. This paper presents a sensitivity analysis of 60 W, 400 V, 6000 rpm super-high speed hysteresis motor characteristics including electromagnetic torque, power fac…
The conformation of volume free energy is very important for microstructure simulation with phase-field method. However, the conformation of volume free energy is still correspondingly simple and ideal at present. In this paper, a new conformation method of free energy is mentioned. Free energy of each phase at appoin…
Silicon oxycarbide（SiCO）thin films is a kind of glassy compound materials, which possess many potential excellent properties such as thermal stability, wide energy band, high refractive index and high hardness, and have many potential applications in space. The preparation processes of SiCO thin films by RF magnetron…
Phase change random access memory (PCRAM) is the most promising candidate for the next-generation nonvolatile memory. Recently, elevated-confined PCRAM using an elevated metal column was proposed as a promising approach to achieve lower RESET current. This paper studied the writing strategy to enhance the endurance of…
A universal asymptotic expression for the law of nanowire (NW) growth in cases where the diffusion lengths for adatoms on the substrate surface are much greater than the NW radius and the diffusion lengths for adatoms on the side surface of the growing crystal are much greater than the NW length. The main stages of gr…
The poly(ethyleneteraphthalate)(PET) fabric was semi-encased sucrose ester at high pressure and high temperature to endue it enough –OH, and then the PET fabric was modified with peanut protein through crosslinkage. The FT-IR spectra showed the peanut protein was grafted on PET fabric, the X-ray diffraction spectra sh…
The latest development on preparation of mullite, mullite-corundum and mullite-zirconia materials using fly ash by reaction sintering process was reviewed. The future development of mullite and its composites synthesized from fly ash was prospected.
Chiral side-chain liquid-crystalline elastomers (LCEs) IP~IVP containig menthyl groups were synthesized by a one-step hydrosilylation reaction. The chemical structures and LC properties of the monomers and polymers were characterized by use of various experimental techniques. The effect of crosslinking mesogens on mes…
Make nano-scale Al doped with SiC by combustion synthesis with Si, C and Al powder as the raw materials. This kind of nano-scale Al doped with SiC boasts high infrared radiance, and thus can be used for energy conservation of thermal equipments at 800~1500°C. Details include: adopt the synthetize nano ceramic powder o…
The traditional method to remove zinc coating from matrix has some problems, such as complicated process, expensive cost, and environmental pollution problems. In our article, mechanical method is proposed to remove zinc from galvanized sheet. Using this method, In the paper, the galvanized sheet can reused by an easy…
A new rational peak overpressure formula about scale distance has been summarized by comparing differences of domestic and foreign scholars’ empirical formula. AUTODYN has been used to simulate the shock wave in the air by taking different mesh sizes. Comparing the numerical simulation results and empirical formula re…
Phase change random access memory devices made from chalcogenides compounds, such as Ge2Sb2Te5, have attracted much attention because of their high-speed read-write and low power consumption capabilities. The phase change in Ge2Sb2Te5 is thought to be characterized by the displacement of Ge atoms, accompanying relaxat…
Y 2 O 3 nanomaterials have been widely used in transparent ceramics and luminescent devices. Recently, many studies have focused on controlling the size and morphology of Y 2 O 3 in order to obtain better material performance. Y 2 O 3 powders were prepared under a modified solvothermal condition involving precipitatio…
Abstract In modern warfare earth penetrating weapons are often used to defeat enemy’s hardened and deeply buried targets such as aircraft shelters and bunkers. A dual warhead system (DWS) is one of such weapons composed of a forward shaped charge (FSC) and a following through warhead (FTW). In this paper, an analytica…