Materials Literature
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The effects of ultraviolet irradiation on three-step coloring film were investigated through TEM observation and the measurement of chromaticity and of the metal content. TEM observation revealed that ultraviolet irradiation apparently decreases electrodeposits in the DC anodic oxidation film. Metals that had electrod…
本報では, 未延伸および幅拘束1軸延伸したフィルムに熱処理, 熱水処理を施し, 結晶化度の値をいろいろと変化させ, これらフィルムの引っ張りによる応力-ひずみ曲線を検討する. ポリエチレンテレフタラート (PET) のフィルムは温度80℃附近で延伸が行われるので, 未延伸フィルムでは, 室温とこの温度による応力-ひずみ曲線を解析した. また, 幅拘束1軸延伸フイルムのOff-axis angle再延伸は室温で行っているので, この後者は, 室温での応力-ひずみ曲線を解析した. 以上の結果により, PETの未延伸, 幅拘束1軸延伸フィルムの結晶相, 非結晶相の値列モデルにもとづき解析され, その結晶相, 非結晶相のヤング率および降伏…
X-ray photoemission spectroscopy (XPS) measurements were performed on SrTiO3 and BaTiO3 single crystals with monochromated Al Kα radiation. Valence band (VB) spectra of as-fractured SrTiO3 and BaTiO3 crystals exhibit two peaks arising from the O 2pπ and O 2pσ bonding orbitals. From a partial density of states (PDOS) c…
Carbon nitride (CNx ) thin films were deposited on Corning #7059 glass and Si (100) substrates by pulsed laser deposition (PLD) using a radical beam source. The deposited films were characterized by SEM, XRD, XPS, FT-IR, and Raman spectroscopy. Nitrogen content in the films increased with increasing RF power and N2 ga…
Oxygen mixed with nitrogen trifluoride (NF3) was used for the gas source of the plasma etching as one of the methods to improve the etch rate of the polyimide (PI) film. In order to investigate the effects of NF3 addition, the surfaces of the PI film were analyzed with x-ray photoelectron spectroscopy (XPS), optical p…
The interfacing of thin film vapor deposition technologies and solid state electrochemistry has led to the recent development of solid electrochemical deposition (SED). Studies have shown that SED processes have fundamental similarities in terms of mass and charge transport through the solids for further deposition. T…
Magnetic viscosity parameter /spl Lambda/ of sintered and melt quenched Nd-Fe-B magnets was measured using the constant-field and constant-rate methods. The results obtained by the two methods are compared to each other. The constant-rate method works well for melt quenched Nd-Fe-B, which has a very low reversible sus…
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…