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。
Preparation of various porous ceramics by selective leaching method and their properties were summa rized and reviewed in this paper. Porous ceramics can be prepared utilizing variety of composite microtextures and crystal structures. Using interconnected microtexture in phase separated glasses formed by spinodal deco…
Poly(3-methylthiophene) (PMT) was synthesized in acetonitrile (AN) using BF4 -, ClO4 -, and CF3SO3 - as doping anions and Li+ and Et4N+ as cations. The electrochemical characterization of these films was performed in aqueous solution using either the same electrolyte as for synthesis or an electrolyte with different a…
The influence of effective case depth(ECD) and silicon content on contact fatigue strength of induction hardened steels was investigated by roller pitting test. The pitting life increases with decreasing ECD, when ECD is large enough to prevent plastic deformation in core. The reason is that absolute value of residual…
Heterobimetallic carbonyl compounds of the type [Fe(CO)4(HgX)2] (X= Cl, Br, I), which have metal-metal bonds, have been prepared in order to study their thermal stabilities as a function of the halogen coordinated to mercury atoms. The characterization of the above complexes was carried out by elemental analysis, IR a…
Latex particles with high and low molecular weight (HM and LM) poly(methyl methacrylate) (PMMA) were used to prepare two sets of films with various latex contents separately. These films were annealed above the glass transition temperature. A UV-Visible (UVV) technique was used to measure the transmitted photon intens…
Fourier Transform Infrared Spectroscopic (FTIR) investigation has been carried out to study the structural changes and coordination of Al and Ti in the sol-gel derived aluminium titanate system as a function of temperature (65°–1400°C). An analysis of the FTIR spectral patterns shows that both octahedral as well as te…
A study has been made on the effects of Al, Si and Mo on anodic polarization characteristics of Fe-10Cr alloys in 0.05-1.0 kmol·m−3 H2SO4 and NaCl aqueous solutions. Potential decay curves have also been measured in order to evaluate the stability of the passive films formed on Fe-10Cr alloys containing Al, Si and Mo.…
The single crystalline austenitic stainless steels based on 316L were developed to improve their resistance to intergranular corrosion and stress corrosion cracking. However the mechanical properties of the single crystals were lower than those of polycrystalline. The precipitation hardening methods were applied to th…
Summary form only given. Pulsed laser deposition (PLD) has number of advantages over conventional thin films deposition techniques (operationally simple, thickness and film properties control, low substrate temperature). Using ultrashort laser pulses, one may add some more interesting properties such as very high qual…
Systematic measurements of optically induced birefringence in the series of homologous polyoxyethylenediols have been carried out. Macroscopic and microscopic parameters of the molecular liquids studied, such as viscosity, molecular Kerr constant and effective optical anisotropy, have been calculated. The majority of…
In metallic magnets, scattering from magnetic fluctuations above and near To may provide a substantial contribution to the electrical resistance p(T). However, this effect is usually small because the dominant fluctuations are near q 0, which does not produce substantial backscattering across the Fermi surface unless…
Effect of additions of 7.02～11.98 percent nickel alone on the corrosion resistance of type 304 stainless steels TIG welded joints was evaluated by electrochemical measurement and immersion tests. It was demonstrated that the additions of nickel not only decreased the general corrosion rate, increased both the E b valu…
By reaction of urushiol and MoOCl\-4, the urushiol\|molybdenum chelate polymer was prepared which possessed properties of lacquer and chelate. This reaction forms non\|dissolving,non\|melting and black precipitates of urushiol\|molybdenum chelate polymer.The Mo percentage by weight of polymer prepared by different rea…
Cracking of a cristobalite-containing mullite body at the middle stage of crystallization during cooling was investigated by acoustic emission (AE) and the crack formation was discussed. The specimen was composed of an outside layer of crystalline cristobalite and the inner part remaining as a glass phase. There are t…
An Irradiation Assisted Stress Corrosion Cracking (IASCC) has not been found in Pressurized Water Reactors (PWRs). However, the authors have investigated on the possibility of IASCC so as to be able to estimate the degradation of PWR plants up to the end of their lifetime.In this study, the authors melted the test all…
Barium ferrite films were prepared by r.f. diode sputtering on AlN underlayers, whose influence on the films’ c-axis orientation and magnetic properties was investigated. Hexagonal AlN underlayers with thicknesses of around 30-100 nm were deposited at room temperature. On the underlayers with a thickness of 30 nm, bar…
Cristobalite, a low-density polymorph of silicon dioxide (SiO2), shows an unusual elastic behavior of negative Poisson ratio, contracting laterally when compressed and expanding laterally when stretched. We have successfully evaluated the adiabatic second-order elastic stiffness constants in the temperature range of 3…
The purpose of this study was to determine the effect of the fitting window size used with the linear least squares fit method when quantitating trace elements with electron energy loss spectroscopy. Theory and computer simulation with a simple model of two 'signals' show that, when the background underlying the signa…
X-irradiated Li(N2H5)SO4 single crystals were investigated using ESR and ENDOR spectroscopy at several temperatures. The hydrazine radical cation N2H4•+ was selectively produced by irradiation at room temperature. From the analysis of the orientation dependent ENDOR spectra, the 1H-hfc tensors of the cation radical we…
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 R. M. Erasmus, J. D. Comins, M. L. Fish, Z. Martin, R. W. MacGregor, J. A. Reid; Raman spectrosco…