Materials Literature
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Thin superconducting films attract great attention as a promising material for plenty of applications. The surface determines most of the physical properties of these films. We studied the polarization effect for the [001] surface of perovskite ABO 3 superconducting crystals on the example of SrTiO 3 . Optimization of…
A new recycling technique has been developed which uses a natural solvent, d limonene, to shrink expanded polystyrene (EPS). d-Limonene is a natural vegetable oil which is extracted from the rinds of citrus fruits and is a good solvent of EPS. Limonene has almost the same solubility as toluene at room temperature. Thi…
Sensitization of type 347 (UNS S34700) austenitic stainless steel (SS) samples removed from forged bars was investigated using the electrochemical potentiokinetic reactivation (EPR) method and the weight-loss technique of ASTM A 262, Practice B. A normal and a low-carbon steel were investigated. After solution-anneali…
Herein we present preliminary results of a study of the distribution and chemical composition of clay minerals in rocks recovered from the Trans-Atlantic Geotraverse (TAG) hydrothermal mound. This study is part of Leg 158 of the Ocean Drilling Program, an effort to evaluate the subsurface secondary mineral distributio…
In this paper, we investigate fiber diameter and strength distributions in early-stage processing. We have processed two lots of merino wool from scouring to top finishing. Fiber samples collected at each processing stage are measured for diameter on an optical fiber diameter analyzer, and fiber strength is measured o…
The present paper deals with the texture, deformation mechanisms and mechanical properties of α and near α alloys (i.e. with hexagonal symmetry matrix). For items related aspects are reviewed: 1) texture formation during thermomechanical treatments depending on the composition of the alloys 2) determination of active…
Abstract A C -centered monoclinic phase isotypic with Al 13 Os 4 and structurally related to it body-centered orthorhombic phase were found in the Al 13 Co 4 alloy annealed at 1373 K and subsequently quenched. The new orthorhombic phase exhibits the lattice parameters of a = 1.531 nm, b = 1.235 nm and c = 0.758 nm. Th…
The use of microelectrodes in biofilm research allows a better understanding of intrinsic biofilm processes. Little is known about mass transfer and substrate utilization in the boundary layer of biofilm systems. One possible description of mass transfer can be obtained by mass transfer coefficients, both on the basis…
Tetrasulfonated cobalt and nickel phthalocyanines (CoPcTs and NiPcTs, respectively) intercalated in layered double hydroxide (LDH) were studied by Raman microscopy. In the case of the cobalt complex the investigation included the supported sample in which the phthalocyanine is not within the LDH galleries but on its o…
A method is needed to accurately and rapidly determine the gravimetric bark content of a cotton sample. Gravimetric bark content represents the percent bark mass through out the volume of a cotton sample. The current method for measuring gravimetric bark content is a labor intensive, lengthy process. Machine vision, o…
The corrosion of underground structures, such as pipelines, depends on soil aggressiveness towards the metals. Two different methods of protection are used: (a) cathodic protection and (b) polymer coatings. The assessment of the degradation of buried structures is not easy because of the complex composition of the soi…
Technical Briefs Effect of Ultrasonic Vibration on Transient Boiling Heat Transfer During Rapid Quenching of a Thin Wire in Water H. Yamashiro, H. Yamashiro Institute of Advanced Material Study, Kyushu University, Kasuga, Fukuoka, 816, Japan Search for other works by this author on: This Site PubMed Google Scholar H.…
A method for the calculation of the orientation distribution function (ODF) based on texture components is described. The results compare well with the more conventional ODF analysis which approximates the texture using series expansion or a large set of discrete values. The usefulness of the method is demonstrated fo…
We have measured the Raman-scattering spectra of the \ensuremath{\beta} modification of ${\mathrm{GeSe}}_{2}$ at low temperatures and under hydrostatic pressures up to 8 GPa at room temperature. A total of 28 modes of symmetry ${A}_{g}$ and 29 of symmetry ${B}_{g}$ were resolved by polarized light-scattering measureme…
This paper reviews current knowledge of the martensitic tetragonal to monoclinic transformation that is the key to transformation toughening in zirconia ceramics. The most critical feature of this transformation is the shape strain, which not only governs the degree of toughening but, more important, determines whethe…
Multiphonon relaxation rate saturation is observed for rare-earth-doped glasses for high excited-state densities. This behavior is analyzed in a statistical approach; a theoretical model for the microscopic process is proposed. A phonon bottleneck effect on radiationless relaxation related to an accepting-modes satura…
In this work the relationships between processing, structure and migration properties of recycled polypropylene (PP) were analysed in relation to the possible use of recycled PP in food packaging applications. PP containers used in food packaging were contaminated with food and then washed, reduced into a processable…
A group of new high chromium containing amorphous brazing filler metals in foil form has been developed for applications in highly corrosive and/or high temperature environments. These new alloys contain 10-16 wt-% chromium, 1.2-1.6 wt-% boron, i.e., minimal amount needed for amorphability, 7.0-7.5 wt-% silicon, 0-5 w…
An explosive type of vapor bubble growth was observed during pool boiling experiments in microgravity using R-113. Photographs reveal that the liquid-vapor interface of the explosive bubbles are wrinkled and corrugated, leading to the conclusion that some type of instability mechanism is acting. The classical hydrodyn…
Crosslinkable interpolymer complexes of novolac resin and poly(ethylene oxide) (PEO) were prepared by mutual mixing ethanol solutions of novolac and PEO. Fourier transform infrared (FTIR) studies revealed that the driving force for the formation of novolac/PEO complex is hydrogen bonding interaction between the hydrox…