Materials Literature
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Many components in the shipbuilding industry are made of copper-based alloys. These pieces tend to break due to corrosion generated by a marine environment; such components can be salvaged through surface engineering, through deposition of suitable coatings. This paper studied the influence of three surface preparatio…
This article presents the analytical strain solution of the rate-form non-associative elastic-plastic constitutive model using the Drucker-Prager yield criterion with linear isotropic hardening. The strain solution is obtained using constant stress rate assumption. The solution for the deviatoric radial loading case i…
Surface layers formed by adsorption of 5-chloro-1,2,3-benzotriazole (5-chloroBTA) on nickel and influence of pH of borate buffer solution and electrode potential on formation multicomponent oxidized films on nickel were studied by XPS.It was found that at concentration of 10 -4 mol/l in neutral borate solutions a 0.7…
Photocatalytic hydrogen evolution from water is an attractive way to convert solar energy into chemical energy. Heterostructured photocatalysts not only increase visible light absorption but also promote the separation of photoexcited charge carriers so that high photocatalytic efficiency might be obtained. G. Q. Lu,…
The Oxygen (O 2 ) annealing processes of metal electrode in rapid thermal annealing (RTA) and furnace were applied to modify surface properties including work function and bonding state without change in bulk properties. The Mo/Ti (50/3 nm) and Cu/Ti (50/3 nm) films were annealed at different temperature in RTA and fu…
In this study, contact angle measurements and an infrared p-polarized multiple-angle incidence resolution spectrometry (p-MAIRS) technique were performed on MgO(100) and quartz substrates. The contact angle and IR spectra of the in-plane and out-of-plane vibration modes depended on the cleaning methods. The surface of…
Silica nanoparticles were synthesized by sol-gel method from tetraethoxysilane (TEOS), ethanol (C2H5OH), water and ammonium hydroxide (NH4OH) as catalyst. The morphology and structure of colloidal silica particles formed depend on the molar ratio of reagents. The XRD patterns show the amorphous nature of the particles…
Purpose: The aim of the work is to determine an influence of the effectiveness of the modification of the chemical composition and morphology of non-metallic inclusions by rare earth elements in advanced high strength steels (AHSS) with increased Mn and Al contents. Design/methodology/approach: The effects of the modi…
We show that, by using the unit-cell transformation between 1 Fe per unit cell to 2 Fe per unit cell, one can qualitatively understand the pairing symmetry of several families of iron-based superconductors. In iron-pnictides and iron-chalcogenides, the nodeless s±-pairing and the resulting magnetic resonance mode tran…
Thin films of ZnO nanoparticles obtained by magnetron sputtering deposition and wet chemical methods are investigated for their antibacterial effect on Gracilicutes- bacteria Pseudomonas putida. This bacterium is used as a sensitive standard in an international water quality test, ISO 10712:1995. It was chosen for tox…
Fe(III)meso-tetraphenylporphyrinated polyacrylonitrile fiber mat supported TiO_2 photocatalyst (PANC/ TiO_2 mat) was prepared via copolymerization and electrospinning. SEM images showed that well-defined fibers with diameters around 1.47 \pm 0.26 \mu m were fabricated from Fe(III)meso-tetraphenylporphyrin (FeTPP)-acry…
Improved Photoluminescence of Ce3+ Activated LaAl(Si6-zAlz)(N10-zOz) (z∼1) Blue Oxynitride Phosphors by Calcium Co-Doping, Takahashi, Kohsei, Harada, Masamichi, Yoshimura, Ken-ichi, Fukunaga, Hiroshi, Tomomura, Yoshitaka, Hirosaki, Naoto, Xie, Rong-Jun
The paper introduces a new approach, based on the computer-aided monitoring of the motor instantaneous current space phasor (ICSP), for diagnosing the occurrence of inter-turn short circuits in the stator windings of operating three-phase induction motors. The proposed diagnostic technique generates the motor ICSP, wh…
We describe the one-pot synthesis of zwitterionic, pH-responsive, layered branched copolymer nanoparticles. In aqueous solution, the charged layers can be switched on and off in response to solution pH changes. The colloidal stability of these complex nanoparticles is superior to corresponding linear triblock copolyme…
Due to a martensitic phase change shape memory alloys can revert to their original shape by heating when they undergo an appropriate treatment. Actuator elements with this shape memory effect can show a significant design change combined with a considerable force. Therefore they can be used to solve many technical tas…
Porous materials with ordered one-dimensional channels are very attractive hosts for design, synthesis and application of various host–guest systems. To ensure the full utilization of these exceptional properties, the macroscopic ordering of the host materials is of crucial importance as well as the microscopic organi…
Integral relations to describe the propagation of a TE-wave from an external point source through the two-dimensional medium (plane interface) and the plane-parallel plate are proposed. We discuss three types of waves that contribute to the resulting light field, namely, the propagating waves and the first- and second…
The paper presents the results of studies to determine the effect of complex surface and bulk modification and double filtration during mould pouring on the stereological parameters of macrostructure and mechanical properties of castings made from the post-production waste IN-713C and the MAR-247 nickel alloys. The ev…
A combined study on the mechanical behaviour of multi-phase 800 high yield strength steel (MP800HY) and complex-phase 800 steel (CP800) is carried out under tensile loads in the strain rate range from 0.001s−1 to 750s−1. Quasi-static (0.001s−1) tests are performed on electromechanical machine, whereas, medium (5s−1 an…
The New Zealand capability in Ion Beam Analysis of air particulate samples has been upgraded in recent years. The main equipment change has been the introduction of the ability to analyse samples taken using the Streaker (PIXE International Corporation) sampling system. This is an automated sampler which allows for gr…