Materials Literature
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Single crystal X-ray analysis of black phosphorus, a narrow gap semiconductor with puckered layer structure, was performed under high pressure up to 4.7 GPa Pressure dependences of the lattice parameters show anisotropy, as reported in the literature. The length of the b axis and unit cell volume decrease Linearly wit…
The α/γ equilibrium in the ternary Fe–Mn–Al system was experimentally investigated at 1 073, 1 273 and 1 373 K. The tie-lines in the (α+γ) two-phase field were determined at 1 273 K by measuring the alloy content of the individual phases of equilibrated two-phase specimens by means of X-ray microanalysis. These experi…
In order to evaluate the effects of relative humidity (RH) at room temperature and kinds of chlorides on atmospheric stress corrosion cracking (SCC) of SUS 304 and 316 L stainless steels in contact with chlorides, SCC tests were carried out in RH controlled environments by using U-bend specimens deposit of 0.5 N chlor…
Infrared reflection and Raman spectra have been measured for two complex perovskite ceramic materials, Ba(Mn 1/3 Ta 2/3 )O 3 and Ba(Ni 1/3 Ta 2/3 )O 3 . Two‐mode behavior was observed for both of the compounds in the inner vibrations of the BO 6 ‐type octahedrons, where B indicates Mn, Ta, and Ni ions. This behavior i…
A novel method for determining the sizes of iron parts in a magnetic circuit, which preserves the requirement of prescribed flux densities, has been developed. In order to take into account the nonlinear characteristics of iron, the magnetization integral equation method is used in the analysis. The effectiveness of t…
In order to elucidate the mechanism of the enhancement of the terminal solubility for hydrogen (TSH) in Nb by alloying with undersized Mo atoms, the state of hydrogen was studied by the channeling method using a nuclear reaction $^{1}\mathrm{H}$${(}^{11}$B, \ensuremath{\alpha})\ensuremath{\alpha}\ensuremath{\alpha} in…
Crystallographic and kinetic characteristics of martensitic transformations and parameters of shape memory effect in B2 compounds of titanium Ti 50Ni50-xXx (X = Fe, Co, Pd, Pt, Au, Cu) and Ti50Pd50-xY x (Y = Fe, Co, Cu), where 0 ≤ x ≤ 50 are investigated. Temperature, hysteresis, value of reversible deformation and st…
Abstract Erstmals wurde in Form farbloser, transparenter Einkristalle Li 4 MoO 5 [aus Gemengen von Li 2 O und MoO 3 . Li:Mo = 4,2:1, Ni‐Bömbchen, 950°C, 28 d] sowie Li 4 WO 5 [aus Gemengen von Li 2 O und WO 3 , Li:W = 4,4:1, Au‐Rohr, 900°C, 30 d] dargestellt. Nach Einkristalldaten liegt bei den isotypen Oxiden vom Li…
The present work has shown that the cause of seam pucker in structurally jammed fabrics is mainly due to the sewing tensions of the sewing threads and that the fabric instead of trying to take up a more jammed configuration, as believed so far, tries to resist jamming and in doing so, buckles out of the fabric plane.…
The fracture resistance of a commercial TiB 2 particle/SiC matrix composite was evalu ated at temperatures ranging from 20 to 1400°C. A laser interferometric strain gage (LISG) was used to continuously monitor the crack mouth opening displacement (CMOD) of the chevron-notched and straight-notched, three-point bend spe…
2,3,7,8-Tetrabromodibenzofuran in ppm concentrations can be generated via reductive debromination and subsequent intramolecular cyclization during thermolysis of polybrominated aromatic compounds such as decabromodiphenyl ethers which are used as flame retardants in plastics. The respective tetrabromodibenzodioxin iso…
This paper reports the results of investigations into the effect of activated carbon pore structure on the process of carbon regeneration. The suitability of several different commercial activated carbons for biological regeneration was investigated. The pore volume, pore radii, and surface area of the carbons were de…
Abstract Mit Hilfe von Schmelzflußreaktionen wurden Einkristalle der bisher unbekannten Verbindungen Ni 5 VB 2 O 10 (I) und Ni 5 MnB 2 O 10 (11) erhalten. Beide sind isotyp zu Ni 5 TiB 2 O 10 , (Raumgruppe D 2h 9 –Pbam, Z = 2; (I): a = 9,183; b = 12,189; c = 2,989 Å; (II): a = 9,130; b = 12,164; c = 2,970 Å). Ni 2+ un…
Using an order-of-magnitude evaluation, a quantitative evaluation was performed of the natural and Marangoni convections produced in the melt during single-crystal growth by the floating zone method.The Reynolds number, which forms a standard for free interfacial velocity, was described as a function of the Grashof nu…
Abstract Phase separation dynamics during a reaction injection molding process of an elastomeric polyurethane was studied via FT‐IR and rheology. 4, 4′ methylenediphenyl isocyanate and 1, 4 butanediol were mixed with 50 wt% of a 2000 molecular weight poly(proplyene oxide)polyol catalyzed by dibutyltin dilaurate. A sma…
黒鉛炉AASでPbを定量する際に,マトリックス修飾剤としてPdを添加すると,Pbの吸光度が増大すると共に,Pbの出現温度が上昇し,灰化温度をより高い温度に設定することが可能となる.このPdの効果について,X線光電子分光法(XPS)を用いて検討した.Pbの塩酸溶液の場合,600℃でPbのほとんどがPbCl2として消失するが,これにPdを共存させると,600℃に加熱してもPbは減少しない.又,試料中のPdCl2は,加熱温度の上昇と共に還元されて金属Pdとなり,同時にPbも還元されることが分かった.このXPSの結果から,Pdを添加することによって,Pbは黒鉛炉の昇温過程でPd中に取り込まれるために,原子化段階以前のPbの消失が抑制される…
The height dependences of the lattice spacing of crystal-like structures have been studied in sedimentation equilibrium and in deionized aqueous suspensions by reflection spectrum measurements of monodisperse polystyrene spheres (85–264 nm in diameter). The lattice spacing increases linearly owing to the gravitational…
Rolling and recrystallisation textures of Fe–3% Si (HiB) were investigated in center and subsurface layer by the ODF‐method. Degree of cold rolling and recrystallisation time were varied. The results were compared with results obtained for low carbon steel and the mechanisms of texture formation were discussed. At the…
Electric breakdown strengths were measured using a quasi-uniform field spherical electrode assembly for polyethylene with and without an emission shield between the electrode and the polyethylene surface. The results show that the emission shield suppresses carrier injection from the electrodes and enhances the breakd…
Corrosion rates of AISI 1010 steel samples in coal-water slurries in the presence and absence of chromate, molybdate, and tungstate oxyanion inhibitors were determined by electrochemical and weight loss measurement techniques. The corrosion rates obtained by the electrochemical technique were generally higher than the…