Materials Literature
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Abstract The growth rate oscillations of {10 1 ) NaNO 3 crystal face have been measured at certain range of supersaturation of a water solution. It has been found, that root‐mean‐square amplitude of the oscillations of rates increases linearly with the growth of the mean growth rate. The supposition has been made that…
Six varieties of tussah and two varieties of mulberry yarn were assessed by using the Seriplane test method for various appearance grades and also on the Uster evenness tester. The correlation coefficients between evenness, cleanness, and neatness as determined by the Seriplane method and the mass irregularity (CV%),…
From around 1990, many new types of fibers and textiles began to be released onto the market by synthetic-fiber companies. Known as shingosen, these synthetic-fiber textiles are characterized by their innovatory texture, touch, and appearance and created a new paradigm and fashion among the textile industries. Shingos…
PbTe single crystals were prepared by the Bridgman method, where either Ag2Te or PbI2 was doped as the source material of silver and iodine. The hole concentration was successfully controlled in the range from 2.0×1024 to 9.0×1024 m−3 by doping 100 to 700 mol ppm Ag2Te, and from 3.5×1023 to 4.5×1024 m−3 by doping 100…
SiO2-Si3N4 composites were prepared by hot pressing process. Their flexural strength and fracture toughness obtained are 143MPa and 1.7MPa.m1/2=, which are 107% and 70% higherthan those of the SiO2 matrix material respectively. The addition of higher elastic modulus Si3N4 particulates and the residual stress caused by…
The directional solidification of highly undercooled single phase alloy is put forward. In contrast with the conventional directional solidification, it occurs under a negative temperature gradient at the solid/liquid interface. The essential condition for this process is that the thermal diffusion in liquid plays a d…
Infrared chopper elements have been fabricated, utilizing the transient light scattering effect of ferroelectric liquid crystal with asymmetric waveform voltage drive. New elements can performed 12% of modulation degrees in around 10 microns region. A combination of an IR-chopper and a pyroelectric sensor is used to m…
Oxidation behavior of high-purity Si-SiC composite (molar ratio 40/60) was studied during reactions at 1600K for 15h in Ar-O2 (PO2: 0.02-97kPa) atmospheres to evaluate the oxidation-resistant property. The oxidation rate was determined by measuring CO and CO2 concentrations during the oxidation using a quadrupole mass…
The structure and content of carbon gel in carbon black filled rubber composites were studied as functions of molecular weight and chemical structure of rubber by the pulsed NMR technique. The content of carbon gel was governed by the molecular weight of rubber but was controlled by the viscosity of rubber solutions w…
The aptly-named liquid crystalline state behaves in some respects like an ordinary fluid, while also exhibiting properties that would usually be associated with crystalline solids. For example, the low viscosity of many liquid crystals enables them to readily adopt the shape of their container; yet, transmitted polari…
Magnetic Barkhausen emissions are sensitive to changes in the surface mechanical condition in magnetic materials. This sensitivity arises because magnetic properties of the material are closely linked to stress via the magnetoelastic coupling. Barkhausen signals in steels which are typically in the frequency range 20-…
Nanosized silicon powders were prepared by gas-phase cluster agglomeration reactions in a low-pressure silane plasma. The formation and agglomeration of clusters leading to the growth of primary particles of powder were studied by in-situ techniques including mass spectroscopy and laser light-scattering experiments. T…
Cubic and octahedral magnetite specimens from a variety of localities have been examined to ascertain the influence of chemical composition on their morphology. The presence of cations which favor occupancy of the A site in the magnetite spinel structure is shown to be significant in the formation of cubic magnetite a…
The width of domain boundaries is an important parameter for the characterization of microphase separation in polymers. This parameter is often obtained by measurements of small-angle X-ray scattering (SAXS) in the range of validity of Porod's law, according to which X-ray intensity scattered by an ideal two-phase sys…
This is the first of a two-part series describing the formulation of a computer-aided simulation of the ring-spinning process. The unique feature of this model is a formalized model of yarn breakage in the spinning process. This model takes into consideration specific features of the spinning process, the structure an…
Various separation methods for cuticle isolation from whole wool have been studied. A method involving agitation of wool fibres in formic acid proved to be successful, producing a high yield of cuticle cells relatively free from contaminating cortical cells. The cuticle cells so isolated were characterised by amino ac…
We report the rapid modification of the palladium 3d photoelectron spectrum obtained from a mixed PdCl2/PVP (polyvinylpyrrolidone) film on glass. Chemical transformation of up to one-third of the Pd is observed under XPS analysis conditions that are routinely used for swift survey scans. The alterations can be assigne…
Enterolith fragments from two tapir species and horses were subjected to x-ray diffraction analysis. Tapir enteroliths were formed as layers of mineral deposited around a foreign nidus. The structure was similar to that of equine enteroliths except that tapir enteroliths lacked a central region of radially symmetrical…
The crystalline lanthanide complexes (except Ce and Pm) with proline were synthesized. The general formula of [Ln(Pro)2(H2O)4]3(ClO4)3 of the complexes were obtained from chemical analysis, elemental analysis, TG-DTA analysis and electrical conductivity. Infrared spectra reveal a considerable shift of the symmetric co…
An investigation of cone calorimeter test procedures was performed using two types of mattress composites with various specimen preparations and equipment configurations. The objective was to discover suitable procedures for testing mattress composites. Concurrent with this work a much larger and more sophisticated pr…