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。
Two distinct Tafel regions are observed in the active region of the anodic polarization curve of iron in ammoniacal carbonate solution. A prepassive layer may form in the Tafel region at the higher overpotentials. A hydrogen oxidation peak is proposed to occur in the lower overpotential Tafel region. Anodic dissolutio…
Molecular dynamics simulation (MD) has been carried out for Li2SiO3 in the molten and glassy states. The parameters of the pair potential functions were determined by a trial and error method so that the results of X-ray diffraction analysis could be well reproduced. The changes in the structure and dynamic properties…
The luminescence properties under high-resolution excitation and emission conditions at 4.2 K of hydrated Gd3+ion-exchanged zeolite A are reported. From these luminescence measurements it is found that in a sample containing 0.8 wt.% Gd3+, only one site appears to be occupied by Gd3+. In a freshly prepared sample cont…
Fully dense compacts of SiC-AlN solid solution and composite were fabricated by the combination of reaction synthesis and hot isostatic pressing (HIP). Their strength and deformation behavior were investigated from room temperature to 1773 K by a Modified Small Punch (MSP) test which has been found to be suitable for…
A crystal of dodecasil 3C (ZSM-49, 136 SiO 2 ) was prepared and heat treated to expel the enclathrated guest species. The structure of this sample was refined [space group Fd [unk] m , a = 19.369(6) Å] to R w = 0.057 from 1068 reflections collected at 573 K with synchrotron radiation at λ = 0.593 Å. Anisotropic refine…
Abstract The physical properties, thermal stability, rheology and tensile properties of a commercial semi‐crystalline and an amorphous thermotropic liquid crystalline polymer (TLCP) have been investigated. Analysis by differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA) confirm the pr…
Diffusion coefficient and solubility of hydrogen in commercial pure solid aluminum of 2N(99.7 mass%) were measured by means of the ordinary desorption method, and they were compared with those of high-purity 4N aluminum. A variety of distribution of intermetallic compound particles did not essentially influence the hy…
The redox reaction between trans-dioxotetraphenylporphyrinruthenium(VI) and two equivalents of the five-coordinate iron(II) salicylideneamine complex Fe(salmah) in toluene results in the transfer of two electrons and formation of the novel bis-µ-oxo trimetallic complex [RuIV(tpp){OFeIII(salmah)}2] containing first and…
(1992). Friction welding of shape memory alloy. Welding International: Vol. 6, No. 1, pp. 20-25.
The first crown ether-based bola-amphiphiles are prepared and are shown to aggregate into a previously unknown type of niosome.
Intergranular corrosion of irradiated austenitic steels has been attributed to compositional changes produced by radiation-induced segregation at grain boundaries, and the effect has been investigated for the 20Cr/25Ni/Nb stainless steel employed as fuel cladding in advanced gas-cooled reactors. Analytical electron mi…
The formation process of kaolinite from the amorphous mixture of silica and alumina by hydrothermal reaction was studied by XRD, IR, DTA-TG, TEM, and high-resolution solid state 29 Si- and 27 Al-MAS/NMR. The amorphous mixture of the starting material prepared with commercially available silica-sol and alumina-sol was…
In order to ensure the high quality necessary for use in scientific instruments, most high-technology optical glasses are melted in platinum containers. In general, this noble metal has excellent corrosion and erosion resistance, as well as low solubility, when in contact with molten glass. Therefore the dangers of di…
Description STP 1167 addresses special problems engineers encounter when developing and using wear tests for ceramics and other advanced materials.
Description 80 peer-reviewed papers address these issues: • Hazards and Methods (including aerosols, physical resistance, biological, chemical, pesticides, and thermal and heat) • Field tests, New tests, Evaluations, Design, Physiological, Performance (including field tests, new and improved tests, evaluations, physio…
An 800 kV gas-insulated switchgear, with a capacity level recognized as the largest in the world, was developed as the first development of UHV gas-insulated switchgear, and good results were obtained in the type tests for this switchgear. With the gas circuit breaker and the disconnector used in this gas-insulated sw…
The impact of the assumptions inherent in using the Mott‐Schottky theory to identify deep‐level electronic states in semiconductors was assessed by comparison to the results of a less restrictive mathematical model. The model, developed in another paper, treated the transport and recombination reactions involving elec…
Poly(3-methylthiophene) films made electrochemically inactive by overoxidation in the presence of Cl– can be reactivated both electrochemically and chemically to produce a partially chlorinated conducting polymer.
Poly(rA) binds poly(rG).poly(rC) to form a triple helix. Evidence for this structure includes ultraviolet absorbance mixing curves and melting curves, and circular dichroism spectroscopy. The formation of the triple helix depends on the length of the poly(rC) strand. Triple helix forms when the average length is aroun…
The behavior of concentrated Brownian suspensions in a linear shear flow is studied numerically. Particle trajectories are calculated by Stokesian dynamics, a molecular‐dynamics‐like method that accurately represents the suspension hydrodynamics, including both many‐body interactions and lubrication. The simulations a…