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 thermal decomposition of europium (III) acetate tetrahydrate has been studied by thermal analysis, X-ray diffraction, IR, gas chromatography and chemical analysis. The dehydration of tetrahydrate begins at 70°C and two unknown hydrates are produced in the process of the dehydration, which occurs in three steps. Tw…
The transpiration method was used to study the evaporation of Sb 2 O 3 from a glass melt with the composition 70SiO 2 ·15K 2 O·15CaO·MgO (in wt%) at 1200° to 1300°C. The glass contained about 0.9 wt% Sb 2 O 3 . Assuming the monomer Sb 2 O 3 is the species of evaporation, the saturation vapor pressures could be calcula…
Jet stretch during the formation of threads in the wet spinning process is characterized by means of a force-elongation diagram. Criteria to assess the spinning stability can be deduced from such a diagram with the help of the reserve of force and reserve of elongation by linking the breakage behaviour of the thread b…
The effect on corrosion of composition and microstructure in a series of Fe-Cr-10% Ni alloys with increasing chromium content has been investigated in reducing acids. In the range of 25 to 35% chromium there is a wide variation in the relative amounts of ferrite and austenite. In reducing acids (H2SO4 and HCl) there i…
Pitting behavior of SUS 304 stainless steel at elevated temperatures has been studied in NaCl solution over the temperature range of 25-50°C. Pitting potentials (EP) and repassivation potentials (ER) were determined by the stepwise cyclic polarization technique under a deaerated condition. With increasing temperature,…
Article Semi-empirical Correlations between Group Number, Atomization Enthalpy and Glass Transition Temperature* was published on January 1, 1988 in the journal Zeitschrift für Physikalische Chemie (volume 156, issue 1).
A method for calculating the magnetizing and coupling fields, anisotropy field, and demagnetizing factors in various thin-film anisotropic structures is presented. Single-stripe and multistripe structures are investigated. A generalized method for calculating the magnetization in thin-film structures with arbitrary sh…
Silicon nitride and sialon ceramics are receiving a great deal of attention as potential high temperature structural materials for engines and other demanding applications. The sintering behaviour and high temperature preformance of these ceramics is strongly influenced by the sintering additives, impurities and powde…
The response of a blue SrS:CeF/sub 3/ AC thin-film electroluminescent display device to a pulsed voltage train is marked by a luminescence peak at both the leading and trailing edges of the pulse. The height of the leading peak is less than that of the trailing peak at low (near threshold) voltages but grows much larg…
This experiment provides an interesting and visually stimulating study of the different colors and shapes of crystals of transition metal dimethylglyoxime complexes.
It has been demonstrated that pitting attack on aluminium brass condenser tubes, due to aggressive estuarine water, can be halted by adding to the cooling water suitable amounts of an oxidising agent without injection of ferrous sulphate. Acid cleaning and prepassivation with benzotriazole are followed by continuous c…
Mechanistic studies of methanol decomposition on Ni/SiO2-MgO were performed by use of deuterium isotopic species. In the exchange reaction of methanol with a deuterium molecule, one hydrogen in methanol was much more readily exchangeable than the other hydrogen atoms, suggesting that dissociation of methanol to form a…
Abstract To achieve the highest resolution in the scanning electron microscope (SEM) or in the scanning transmission electron microscope (STEM), the sample must be mounted in the high‐field region of a condenser‐objective lens. A secondary electron (SE) image can then be obtained using a collector before the lens. It…
No abstract available
Abstract Different cellulose reactions are influenced by the various structural parameters of the cellulose (structure of pores and fibrils, crystallinity, hydrogen bonds) in different way. For that reason accessibility and reactivity of cellulose are no absolute but only relative parameters. The lines of the 13 C‐NMR…
Static tensile properties of as HIP’ed Ti-Fe alloys and heat treated Ti-Fe alloys after HIP were studied, and metallographic and fractographic observations were also carried out by means of the back scattered electron images and a scanning electron microscope.Despite the low level of oxygen content, the HIP’ed specime…
A high N.A. i-line lens and a field-by-field leveling system have been developed. Resolution of the lens is better than 0.65 μm. The leveling system has achieved ±0.3 uμ/field on an experimental basis.
The basic characteristics of cellulose triacetate (CTA) film dosimeter have been investigated with 5, 8, and 15 MeV proton beams. The optical density change per unit absorbed dose for 8 and 15 MeV protons is the same as that given for electron beams, but a little smaller for 5 MeV protons. The CTA dosimeter was found…
Polarised neutron-diffraction experiments on the Pccn polymorph of deuteriated cis-[FeIII-(bipy)2Cl2][FeIIICl4](bipy = 2,2′-bipyridyl) gave 402 unique magnetic structure factors collected with magnetic fields almost parallel to the c and b crystal directions. These data were analysed using a valence-orbital model invo…
The characteristic features of flash-butt welded and kindred joints and the defects which occur in them are reported. The mechanisms of their formation, the effects which they have on the quality of the welded joint and the possible methods for their avoidance are discussed.