Materials Literature
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In this research, the spheroidal graphite cast iron melt was produced by using 7 kinds of steel scraps, the shredder scrap, the surface treated steel sheets, the magnetic steel sheets, the high strength steel and others. The influences of the steel scraps on microstructures and mechanical properties were studied. Zinc…
In order to understand the role of TiO2 in the deactivation mechanism of an active RuO2–TiO2 coating, an additional TiO2 layer was introduced in the support coating interphase of regular Ti//[RuO2–TiO2 anode in one case and on the surface of the coating in the other. The electrochemical behavior of these, with TiO2 en…
The X-type dimer of lithium phthalocyanine adopts a significantly different electronic structure from those of the α- and β-type dimers, which leads to a different absorption spectrum and magnetic properties for the X-polymorph compared to those of the α- and β-polymorphs.
This book discusses the fundamentals and recent advances in fatigue analysis. It contains special emphasis on crack mechanics and fatigue design of structural details. The book is intended for engineers, research staff, professors and graduates engaged in fatigue-preventing design and survey, fatigue studies of materi…
unctionalization of polyethylene has been performed by means of homogeneous grafting reactions of maleic anhydride initiated by free radicals. Benzoyl peroxide, azobisisobutyronitrile, and dicumylperoxide have been used as free radical sources and their efficiency has been compared. The effects of the solvent, time an…
A couple of Rietveld-analysis programs, RIETAN, for angle-dispersive diffraction and time-of-flight neutron diffraction have been extensively used for structural studies of many compounds. The history of their developments is briefly reviewed. The latest versions, RIETAN-2000 for angle-dispersive diffraction and RIETA…
A number of recent papers have dealt with such properties of clay minerals as their compositions, assemblages, contents and crystallinities,which can reflect the periodic climate changes of the mineral sources and help to reconstruct paleoclimate. Due to the sensitivity of the clay minerals, however, any climatic infl…
Accurate non-isothermal finite-element simulation of the forming of woven impregnated composites requires a precise knowledge of material behaviour. Consequently, a constitutive model to predict the shear force of impregnated woven composites has been developed. The main objective of the model is to predict shear forc…
The hysteresis phenomenon inherent to redox processes of Electronic Conducting Polymers (ECP) has been studied. Hysteresis was divided into two classes: i) dynamic hysteresis, containing a kinetic and an ohmic component and ii) stationary or thermodynamic hysteresis. A mathematical analysis was performed on the dynami…
The micro- or nano-structured mold used for polymer embossing typically must be coated with an anti-adhesion material to reduce its interaction with the embossing. The mold is typically made by nickel sulphamate electroforming. For the anti-adhesion coating to adhere to the mold, the nickel mold surface must be clean…
The effects of hydrogen on the electronic structure of the passive film on iron were investigated by photoelectrochemical methods. It was found that hydrogen increases the magnitude of the photocurrents from the passive films formed at all investigated potentials, and decreases the bandgap energies of the passive film…
We have measured the silicon tracer diffusivity (30Si) in single crystalline 2/1-mullite parallel to the crystallographic b- and c-axes, respectively. No significant difference between the b- and c-directions was found within the experimental error of 30%. An activation enthalpy of 612 kJ mol−1 and a pre-exponential f…
This review article is concerned with two new convenient synthetic routes for a photosensitive poly(benzoxazole) (PBO). The first synthetic route is based on poly(o-hydroxyamide) and 1-{1, 1-bis[4-(2-diazo-1-(2H)naphthalenone-5-sulfonyloxy)phenyl]ethyl}-4-{1-[4-(2-diazo-1(2H)naphthalenone-5-sulfonyloxy)-phenyl]-methyl…
This review is a brief account of R& D results generated from drying behavior of carpets. First of all, the mathematical rela?tions are reviewed and then, they are developed in detail, which may be used to describe the moisture sorption mechanisms of car?pet. The effect of important parameters during the drying pr…
Radical cations of Group 14 element organometallics R4E and R3EER3 (E = Si,Ge,Sn, R = Me,Et) were generated in alkane solutions by X-ray irradiation and studied using the time-resolved magnetic field effect technique. Modeling shows that in alkane solutions the g-factors of Me4E+˙ and Me3EEMe3+˙ are close to those mea…
Failure and stiffness properties of a woven 8 harness satin (8HS) graphite/PMR-15 composite have been investigated at room temperature and at 315°C by performing the ±45° tensile and Iosipescu tests. Acoustic emission has been monitored during testing. The critical loads for the initiation of damage in the composite h…
Our work of new ferroelecric survey was reviewed. A 2 BX 4 -type compounds having Sr 2 GeS 4 structure, where A = K, Rb, Tl and Cs, B = Zn, Co, Cd and Hg, X = I and Br, were synthesized by the Bridgman method. Their dielectric and phase transitional properties were investigated. From the results, several empirical rel…
Abstract The new compound [{(C 2 H 5 ) 2 NH 2 } 2 In 2 Ge 2 S 8 ] · [(C 2 H 5 ) 2 NH] 0.25 was synthesized under solvothermal conditions using elemental In, Ge, and S in diethylamine. The title compound crystallizes in the orthorhombic space group Pna2 1 with a = 12.804(3)Å , b = 17.615(4)Å, c = 13.067(3)Å, V = 2947.2…
Investigation of porous silicon carbide layer morphology and its growth rate was studied along with electrical characterization. Morphology of the formed porous SiC layers was analyzed by scanning electron microscopy. The effective carrier density in porous layers was extracted from the capacitance-voltage characteris…
Foreign object damage (FOD) behavior of two commercial gas-turbine grade silicon nitrides, AS800 and SN282, was determined at ambient temperature through post-impact strength testing for thin disks impacted by steel-ball projectiles with a diameter of 1.59 mm in a velocity range from 115 to 440 m/s. AS800 silicon nitr…