Materials Literature
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In this paper we discuss the formation and erosion of multi-component materials ('mixed materials') on metals with respect to carbon deposition from the vapor phase. The carbide formation and carbon accumulation at the surface are governed both by chemical reactions and by carbon diffusion into the bulk metal. Carbide…
低融点であり化学的耐久性に優れた封着加工用鉛フリーガラスは, 封着材としてセラミックスやエレクトロニクス産業の分野で望まれている. 本研究では最初にV2O5-ZnO-BaO系の鉛フリーガラスの三成分を様々な組成で調製し, 封着加工用鉛フリーガラスとしての要求を満たすガラスの評価を行った. 評価項目としては, 熱量分析におけるガラス転移点, ガラス軟化点, 熱的安定度評価, 熱機械分析における熱膨張特性, 粉末X線におけるガラス構造解析を行い, 三成分系のガラス化範囲の同定を行った. その結果, (20-80 mol%)V2O5-(0-60 mol%)ZnO-(20-60 mol%)BaOの範囲において封着加工用ガラスとして低温軟化…
This study characterizes the influence of automotive coating composition on the adhesion of pressure-sensitive adhesives (PSA). Automotive topcoats are generally constituted of a basecoat/clearcoat system, but a layer of lacquer is used for white colour coating. X-ray Photoelectron Spectroscopy (XPS) and Secondary Ion…
The effective dielectric, piezoelectric, and elastic constants of two-phase macroscopically piezoactive 3-0 and 3-3 composites are calculated. It is assumed that one of the components is a polarized ferroelectric ceramic material and the other is an inactive material with variable elastic properties. The limiting case…
Whether fructose-1,6-bisphosphate (FBP) triggers the transcriptional regulation of the gene expression of lactate dehydrogenase (LDH) and pyruvate formate-lyase (PFL) in Streptococcus bovis was examined by constructing a recombinant strain that overexpresses FBP aldolase (FBA). When the recombinant strain was grown on…
O-Phenylenediamine was electropolymerized on copper electrodes by means potentiodynamic method. The electrochemical properties of poly(o-phenylene-diamine)films electrosynthesized from aqueous solutions containing different anions were studied by cyclic voltammetry and spectroscopy. The results indicate that the mecha…
In an attempt to fill a gap between fully automatic search/match programs and purely manual methods based on paper products, a relational database plug-in has been developed that functions as a PC-based Search/Index program for extracting information from PDF-4 powder diffraction databases. The plug-in provides an adj…
In this paper, semiconducting behavior of temporarily protective oil coating on the surface of AISI 304 stainless steel in 5% solution under corrosion potential was studied by utilizing potential-capacitance method and Mott-Schottky analysis. It was pointed out that there existed semiconducting behavior of temporarily…
A determination procedure for element elimination criterion in finite element simulation of high-strain-rate impact and penetration phenomena, occurring between tungsten heavy alloy long-rod penetrators and steel targets, has been presented with some demonstrations for the validity of the established criterion. The el…
Shape memory alloy (SMA) actuators possess hard nonlinearities including backlash-like hysteresis and saturation. These nonlinearities result in steady-state error and limit-cycle problems when conventional controllers such as the proportional integral derivative (PID) are used for trajectory control. In this study, a…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Daniel T. Allen, Nathan D. Hiller, John C. Bass, Norbert B. Elsner; Fabrication and Testing of Th…
Appearance of a residual image of the previous frame at liquid crystal display due to change of the interface between LC and aligning layers is called as sticking effect. Phenomenologically sticking effect can be associated with changes of direction of easy axis, e r , and anchoring energy, W, during the action of the…
The fracture characteristics of the joint were analyzed by means of scanning electron microscope(SEM).Microstructures of the joint were examined by means of optical microscope, SEM and an image analyzer. The results show that the tensile strength of the inhomogeneous joint of TiNi shape memory alloy and stainless stee…
We have produced Sm2(Fe, Mn)17Nx coarse powders by a reduction and diffusion (R/D) method and investigated the characteristics. The Sm2(Fe, Mn)17 mother alloy powder made by the R/D method showed rounded shape and sharp particle size distribution, and was consisting of almost only Th2Zn17-type phase with minor α-Fe. F…
Instrumental characterization of an adhesion interface in a rubber-brass system often faces a difficulty in exposing the clean surface due to the stick of the rubber residue on the brass surface. We have succeeded in isolating the interface from the rubber matrix by inserting a filter paper between rubber and brass du…
International audience
Electrical and photoelectrical properties of Al/porous silicon/ monocrystalline silicon sandwichstructures (Al/PS-(c-Si)) based on nanostructured porous silicon, obtained by electrochemical anodization of monocrystalline silicon wafers are reported. The photosensitivity of Al/PS-(c-Si) structures is determined by PS l…
Electrochemical impedance spectroscopy (EIS) is a well established technique for evaluating the corrosion preventive properties of protective coatings. National Museum of Australia (NMA) staff have used this technique in the past to evaluate and rank the corrosion performance of a number of commercial waxy coatings in…
International audience
The melting behavior of two commereial flint and amber glass batches with varied cullet content (0, 40, 65 % and 0, 40, 76 %, respectively) and batch water additions (0 to 5 %) was investigated. The cullet was a blend of up to five industrial types and grades, including ground cullet. Local temperature, electrical con…