Showing papers in "Transactions of Nonferrous Metals Society of China in 2007"

TL;DR: In this paper, the porosity of the sintered compacts was investigated as a function of the SLS parameters and the furnace cycle, and compressive stress and elastic modulus of the 316L stainless steel material were determined.

TL;DR: In this paper, the performance of the treated graphite felt served as electrode for vanadium redox battery was investigated with FT-IR, SEM, XPS, BET, cyclic voltammetry and testing VRB system, respectively.

TL;DR: In this paper, the effect of applied pressure during squeeze casting on microstructures and properties of the alloy was studied, and the results showed that the fluidity of the Alloy is 16% and 21% higher than that of ZL205A at pouring temperature of 993 K and 1 13 K, respectively.

TL;DR: In this article, the effects of the surfactant for improving the properties of MIM feedstock were investigated by using Fourier transformation infrared spectroscopy (FTIR) analysis to prove the interaction between stearic acid (SA) and the 17-4PH stainless steel powder.

TL;DR: In this article, the influence of P, RE content on the microstructure and mechanical properties of Al-Si alloys was investigated, and the complex modifications of P and RE made the coarse block primary silicon obviously refined and the large needle eutectic silicon modified to the fine fibrous or lamella ones.

TL;DR: In this paper, the highly ordered CuO nanowire arrays of composite-oxides were synthesized within a porous anodic aluminum oxide(AAO) template by a citrate-based sol-gel route.

TL;DR: In this article, the corrosion behavior of aluminum alloy 2024-T3 was studied in 3.5% NaCl solution with two fluorescence quinoline compounds named 8-hydroxy-quinoline(8HQ) and 8hydroxyquinoline-5-sulfonic acid(HQS) and the open circuit potential (OCP) test result indicates that both compounds change the alloy corrosion potential by adsorbing on the electrode surface.

TL;DR: In this paper, the effects of microalloying elements of Sc, Zr on the microstructure of super-high-strength Al-Zn-Mg-Cu alloys related to mechanical properties were investigated.

TL;DR: The effects of activating fluxes on welding arc were investigated in this article, where a special set of water-cooling system and stainless steel were used as parent material and high-speed camera system and oscillograph were used for capturing instantaneous arc shape and arc voltage respectively.

TL;DR: In this paper, a high purity Ti2AlC material with little Ti3AlC2 can be synthesized by hot pressing 0.5TiC/1.0A1/0.5C at 1400 °C.

TL;DR: The physical properties and application properties of modified calcium carbonate were measured and evaluated by infrared spectrometry (IR) and X-ray photoelectron energy spectroscopy (XPS) as mentioned in this paper.

TL;DR: In this article, the morphology and orientation relationship between Mg 2 Sn precipitates and Mg(α) matrix was analyzed by using TEM, and the results showed that most of the lath-shaped β precipitates exhibit two ORs.

TL;DR: In this paper, an application of lamellar microstructure for developing ultra-high strength steel wires was studied and discussed based on the experimental results, the relationships between the strength increase and micro-structure development during the cold wire drawing were studied to reveal the strengthening mechanism.

TL;DR: In this paper, the effects of Hg and Ga on the electrochemical corrosion behavior of Mg-5%Hg (molar fraction) alloys were investigated by the measurement of polarization curves and galvanostatic test.

TL;DR: In this article, an annealed TC4 titanium alloy sheet was treated by high density electropulsing (J(subscript max)=(5.09-5.26)×10^3A/mm^2, t (subscript p)=110 μs) under ambient conditions.

TL;DR: In this article, the effects of different tempers on precipitation hardening of 6000 series aluminium alloys for automotive body sheets were investigated by means of Vickers hardness, mechanical property and formability tests.

TL;DR: In this paper, a new type of electroplating bath suitable for nickel electrodeposition was developed and trisodium citrate was used as a complexing agent and a buffer in the bath.

TL;DR: In this article, the authors investigated the strain rate sensitivity and tension/compression asymmetry of AZ31 magnesium alloy at different temperatures and strain rates, and they found that the tension and compression asymmetry increases with increasing temperature.

TL;DR: In this paper, the effect of Yb addition on the precipitation and microstructure of the alloys was investigated using mechanical properties testing, optical microscopy, differential scanning calorimetry (DSC), scanning electron microscopy(SEM) and transmission electron microscope (TEM).

TL;DR: In this paper, the effect of activated carbon and electrolyte on electrochemical properties of organic supercapacitor was investigated and it was shown that specific surface area and mesoporosity of carbon electrode influence specific capacitance.

TL;DR: In this article, the decomposition reactions of mixed rare earth minerals calcined by CaO-NaCl-CaCl2 were studied by means of TG-DTA and XRD.

TL;DR: In this paper, the effects of yttrium(Y) content on precipitation hardening, elevated temperature mechanical properties and morphologies of 2519 aluminum alloy were investigated by means of microhardness test, tensile test, optical microscopy(OM), transmission electron microscopy (TEM) and scanning electron microscope (SEM).

TL;DR: In this article, a simplified model was developed to describe the Curie temperature suppression of ferromagnetic nanoparticles based on a size and shape dependent model of cohesive energy, and the critical temperature variations of the Ferromagnetic particles were deduced.

TL;DR: In this paper, the effect on chalcopyrite leaching rate caused by these factors such as ore granularity, vitriol concentration, sodium chloride concentration, oxygen pressure and temperature was discussed.

TL;DR: In this paper, structural changes for mechanically activated pyrite, sphalerite, galena and molybdenite with or without the exposure to ambient air, were systematically investigated using X-ray diffraction analysis (XRD), particle size analysis, gravimetrical method.

TL;DR: In this paper, the microstructures and properties of 7055 aluminum alloy were studied at different single-aging for up to 48 hours using hardness test, tensile test, electrical conductivity measurement, XRD and TEM microstructure analysis.

TL;DR: LiMn2O4, a cathode material of lithium ion battery, was prepared by the citric acid complexing method using lithium acetate and manganese acetate as raw materials as mentioned in this paper.

TL;DR: In this article, the effect of heat treatment on the microstructure and properties of a hot-extruded nickel-aluminum bronze was investigated, and the results of mechanical property tests showed that quenching, normalizing and aging improved the tensile strength and hardness of the experimental material, with a corresponding fall in elongation.

TL;DR: In this paper, the catalytic effect of activated carbon on the bioleaching of low-grade primary copper sulflde ores using mixture of acidithiobacillus ferrooxidans and acidithibacillus thiooxidants was investigated.