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 results of the investigation of amorphous a-SiC x N y films of various compositions by the ultra-soft X-ray emission spectroscopy are presented. The Si L 2, 3, C K α, and N K α emission spectra, which reflect the partial densities of states Si 3s3d, C 2p, and N 2p, respectively, have been measured and analyzed. It…
Combustion of metallothermic mixtures FeO-Cr 2 O 3 -Al-C in air at normal conditions was studied upon variation in the size of carbon (graphite) particles and carbon localization in a green sample. Carburization conditions were optimized in terms of graphite particle size.
Due to its suitable band gap, low cost, environmental friendliness, and high electron mobility, ZnO, naturally n-type semiconductor with a wide bandgap (Eg = 3.37 eV), is widely studied, as a window layer of heterojunction solar cells. In this study, the ZnO nanowire arrays were grown on the different ZnO seed layers…
In this paper two low-cost microprocessors are employed to build up a internet-based instrument system for remote monitoring of power quality, the instrument system can collect various types of power quality disturbances in interactive or automatic mode. Besides, an SD data storage device is used to save raw data whic…
The Jovian radiation environment experienced by spacecraft such as the proposed Jupiter Ganymede Orbiter (JGO) is intense and characterized by a harder electron spectrum than typical of the terrestrial radiation belts. The DICTAT code is a 1-d analytical tool that is widely used for the assessment of electron-induced…
In this research study for the first time, Re-, (Re + W)-, and (Re + Mo)-doped vanadium oxide nanotubes (VONTs) were synthesized. Doping of these elements into vanadium oxide nanotubes up to 10 at% was performed by using a sol–gel method. The structure and morphology of the nanotubes were investigated by x-ray diffrac…
Ion exclusion chromatography (IEC) is a chromatographic technique based on the exclusion of dissociated sample molecules. This method has many applications in various analytical separations of weak acids. An alternative technique is the vacancy IEC (v-IEC), where the column is equilibrated with the sample solution flo…
Light and thin bipolar plates are essential in increasing the power density of a fuel cell. To construct high-aspect-ratio micro flow channels in such plates is, however, a big challenge. This study reports on machining micro flow channels in metallic bipolar plates using micro electrical discharge machining milling (…
We have studied various metallorganic and organometallic compounds by simultaneous nonisothermal thermogravimetric and differential thermogravimetric analyses to confirm their volatility and thermal stability. The equilibrium vapor pressures of the metallorganic and organometallic compounds were determined by horizont…
Oxide ceramic coatings in the system Y2O3-Al2O3-ZrO2 were fabricated in laboratory scale by using a MOCVD unit. A hot wall reactor was used along with different precursor feeding systems. Most experiments were carried out by using powder flash evaporation including a screw feeder for precursor powder delivery. For com…
Mössbauer spectroscopy, X-ray diffraction, electron microscopy, and magnetic susceptibility measurements have been used to study the process of mechanical synthesis of the solid solution of boron in the matrix of an Fe-Ni alloy. The internal effective field, the Curie temperature, and the lattice parameter of the Fe-N…
Diaminosilanes (CH3)2Si(NHR)2 1a, b are obtained from dichlorodimethylsilane and primary amines (R = n-hexyl, iso-propyl) in good yields. Bis-insertion of CO2 into the Si-N bonds of the aminosilanes quantitatively gives the silylcarbamates (CH3)2Si(OCONHR)2, 2a, b. Oligo- and polydimethylsiloxanes 3a, b as well as N,N…
Multi-walled carbon nanotubes (MWNT) have provided potentially attractive solution over single-wall carbon nanotube (SWNT) bundles at current very large scale integration (VLSI) technologies. This paper presents a comprehensive analysis of propagation delay for both MWNT and SWNT bundles at different interconnect leng…
A new LASER source for SEE test at the University Complutense of Madrid is presented to the scientific community. Due to the limitations of the SPA technique, this new facility use the TPA technique since it allows, normally, the carrier injection at any controlled depth in the material using backside irradiations.
Distance fabric is a new structure textile characterized by its two parallel skins of 2D fabric integrally connected by large numbers of the through-thickness threads. The paper explores the principle of distance fabric forming and the weave structure developed by us, and introduces the weaving process in detail and a…
An investigation was carried out on the behavior of concrete under both sulfate attack and mechanical stress. The specimens of concrete with/without fly ash were subjected to flexural load with a level of 0.2 and 0.4 of their initial strength and also immersed into a 10% sodium sulfate solution or water respectively.…
The oxidation protection of TiAl-alloys at temperatures above 750°C can be improved by the fluorine effect. The results of thermodynamical calculations predict a corridor for a positive fluorine effect. Ion implantation of F was performed because of giving the best results. After a high F-loss during heating a thin pr…
A new hysteresis current control method for APF(active power filter) with lower losses and high efficiency is suggested. The control circuit changes the distribution of the switching number according to the output current of APF. The switching losses of new method are lower 20% than that of conventional hysteresis con…
The aim of the present paper is to investigate the effects of aluminium matrix composition and existence of primary cladding over the 2024 aluminium alloy on the cover layer properties during hard anodising. Three types of aluminium with different chemical compositions were selected and anodising process was done. X-r…
A series of functional pendant armed 14-membered Schiff-base macrocyclic complexes [ML(NO3)2], where M = Co(II), Ni(II), Cu(II), and Zn(II), has been synthesized by template condensation of 3,3′-diaminobenzidene and acetylacetone. The complexes have been characterized by elemental analyses, molar conductance measureme…