Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The International Electrotechnical Commission (IEC) issued in 2010 a revision of the family of standards IEC 60060, describing, among other requirements, how to calculate the various amplitude and time parameters used to evaluate high voltage impulse waveforms. However, the standards are not clear in some aspects, esp…
This paper presents that the current ripple may increase the eddy current loss of axial-flux permanent magnet motor (AFPM). In the simulation of this paper, the ideal sine current and PWM ripple current are applied to the windings of AFPM separately, and the eddy current losses are obtained by finite element analysis…
A phenanthroline-strapped porphyrin bearing two pyridine side arms attached to opposite meso positions was designed as a potential cytochrome c oxidase model and its zinc and copper(I)-zinc complexes were prepared. In the zinc porphyrin complex, the pyridine arms underwent a rapid exchange of their coordination to the…
The Effects of the sintering temperature on the physical and the ferroelectric properties were investigated in 0.6BiFeO 3 -0.4(Bi 0.5 K 0.5 )TiO 3 (0.6BF-0.4BKT) ceramics. 0.6BF-0.4BKT ceramics were fabricated by using a solid-state reaction and the calcined powders were pulverized by ball milling (BM) or attrition mi…
In the past decade energy-dispersive (ED) synchrotron diffraction has evolved into a powerful tool for materials analysis. Recording complete diffraction patterns in rather few different measuring directions allows for depth-resolved analysis not only of the near-surface residual stress state, but also of composition…
This scientific study deals with a complex research of initiation process of selected natural materials. The first chapter deals with research of the influence of density and thermal modification of spruce wood (Picea abies(L.) Karst.) on the critical heat flux density for the pilot ignition. In this chapter the therm…
LaFeO 3 nanoparticles (30–40 nm) have been prepared via the sol-gel method using polyvinyl alcohol as a stabilizer. Addition of polyvinyl alcohol results in the formation of smaller LaFeO 3 particles and decreases the temperature of transition into the single-phase product as compared with the samples prepared via pre…
Kaolinite is an abundant natural material with considerable industrial potential. Despite its simple composition (Al2Si2O5(OH)4 and layered structure being a phyllosilicate), it is notable that only little known about the interaction of kaolinite sheets with small organic reagents at the molecular level. These assumed…
One of the primary aims of Newtonian thermal analysis (NTA) is the prediction of latent heat and finding solid fraction. When the prediction is made, Newtonian baseline (NBL) is computed, and the difference to experimental cooling rate curve is analyzed.
It is hoped to design and modeling of five layers Fe/ZrO2 functionally graded materials for high temperature applications in this paper. The design part, were started with the supposing of connecting two distinct material layers. The two layers were associated by a graded interface composing of three layers. Thickness…
A new layered-double hydroxide-3-(4-hydroxyphenyl) propionate (LDH-HPP) has been synthesized by intercalation of 3-(4-hydroxyphenyl) propionic acid (HPP) into Zn-Al-layered double hydroxide (LDH) by ion-exchange method. PXRD, FTIR, TGA/DTG, compositional studies and FESEM were used to characterize the synthesized nano…
This work aimed to make use of a rate-controlled capillary rheometer for investigating the effects of vulcanizing system using various fillers on the apparent viscosity and extrudate swelling of natural rubber (NR) compounds. The results suggested that the rubber compounds exhibited a pseudoplastic non-Newtonian behav…
This work investigates the fundamental properties of armchair single-wall carbon nanotubes (armchair-SWCNTs) dipole antenna at THz band using Drude method. Due to their metallic conducting properties, the armchair SWCNTs will be utilized in this work. The radiation pattern, s11parameters, phase velocity and antenna di…
When digital circuits are in space radiation environment, faults may occur by the influence of single event upsets (SEU). Because devices do not have enough ability to resist radiation, redundancy technology must be adopted in spaceflight application. Triple modular redundancy technology is an effective fault tolerant…
Crystallization of glass samples with compositions of 20MnNbOF 5 -40BaF 2 -40BiF 3 , 20MnNbOF 5 -30BaF 2 -50BiF 3 , and 30MnNbOF 5 -30BaF 2 -40BiF 3 has been studied using Raman spectroscopy. The study of band formation kinetics in high-frequency and low-frequency regions of the Raman spectrum provided information abo…
Abstract An atypical asbestiform sepiolite occurrence with exceptionally long fibres wrapped by a sheath of aliphatic hydrocarbons was found in the Gressoney Valley (Italian Western Alps) while monitoring asbestos presence in outcrops of serpentinite rocks. Microscopic and Fourier transform infrared analyses proved th…
Abstract Two new ionic [Fe(bpy)3](ONC(CN)2)2·2HONC(CN)2 (1) and [Fe(phen)3](ONC(CN)2)2 (2) complexes have been synthesized (bpy is 2,2′-bipyridine, phen is 1,10-phenanthroline). X-ray structural analysis ((1): P21/n, a=11.7294(5), b=22.0774(11), c=16.2415(8) Å, β=98.910(5)°; (2): P21/c, a=9.4951(3), b=21.6640(9), c=17…
The importance of Network-on-chips has been sharply increased during the past few years. The credit goes to the ability of increasing a large number of cores on a single chip. Consequently, a number of research studies have been done to cope with the challenges that face the on-chip networks such as: providing high-pe…
This paper assesses different energy loss estimation methods using the supercapacitor model parameters extracted from the electrochemical impedance spectroscopy (EIS). Two energy loss estimation methods are applied to two similar supercapacitors from different manufacturers operating under constant power charge-discha…
The cost-efficient switched reluctance machine is highly appealing to the automotive industry. In this application acoustic noise is a crucial criterion, which is usually addressed during the design process. However, parasitic effects, such as rotor eccentricity, are normally not a design target but only a finding dur…