Materials Literature
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Nanoparticles of tin-doped ferrites SnxFe3−xO4(x = 0, 0.1, 0.2, 0.3, 0.4, 1.0) were prepared by the precipitation exchange method. The particles of all specimens are crystalline with mean diameter in the range of 4–8 nm, and the lattice parameters enlarge with increasing tin content. Magnetization and Mössbauer data i…
Crosslinked polyethylene (XLPE) is widely used as the insulator for power cable. Water tree degradation phenomenon is the one of typical problem for the electrical insulation of power cable. In this paper, to confirm whether a signal of a fundamental component and the third harmonics peculiar to the water tree deterio…
Standard enthalpies of formation of quasicrystalline phase and the ternary solid solutions in the Al-Fe-Cu system and the intermetallic compound FeAl were determined by the means of solution calorimetry. The quasicrystalline phase was prepared using two different methods. The first method (I) consisted of ball milling…
A mathematical model of electron-optical processes has been developed and studied. The results of this analysis show that the ion current to a microscopic point emitter can be significantly reduced in planar edge field emission (PEFE) structures. The mechanism of this decrease is related to a special configuration of…
Pitting corrosion was the primary cause of the Alloy 600 (UNS N06600) steam generator tube degradation in a Korean pressurized water reactor (PWR) plant. Pulled tube examinations and remedial measures were carried out to mitigate the pitting. Based on the destructive examinations, the main causes of pitting corrosion…
The effect of a magnetic field on the dielectric properties of Tb 0.95 Bi 0.05 MnO 3+δ single crystals has been analyzed. It has been shown that the state of the crystal for temperatures of 5–440 K is inhomogeneous and restricted domains of polar and spin correlations are exhibited in it. A phase transition in which t…
Visible fiber lasers and amplifiers have potential applications in the fields of optical data storage, spectroscopy, biomedical, and optical local area networks. A spectroscopic analysis has been performed on a borosilicate glass, codoped with Tb<sup>3+</sup> and Yb<sup>3+</sup>, to assess this material as a green las…
Laser absorption spectroscopy of aluminium atoms in pulsed magnetron discharge with pure argon, argon/oxygen, and argon/methane gas mixtures is reported. Time-averaged densities and temperatures of sputtered aluminium atoms were extracted from the absorption signal. The measured Al density depended almost linearly on…
Pure AISI 316L steel is investigated after solution heat treatment (1050 degrees C/H(2)O) and structural sensitization (650 degrees C). Two quite different intergranular corrosion tests are used to determine the degree of structural sensitization due to the precipitation of secondary phases along the grain boundaries…
The formation of nanocrystalline ( d < 100 nm) and submicrocrystalline (100 nm < d < 1000 nm) structures in 09G2S and 10G2FT steels has been studied during cold and warm severe plastic deformation (SPD) by torsion at a hydrostatic pressure and subsequent heating. The steels were subjected to SPD in two initial structu…
New Metallic Glass/Alloy (MEGA)‐rods with a core in bulk metallic glass (zirconium or magnesium based BMG) and a sleeve in conventional light alloys (Al‐5056 and Mg‐AZ31) have been elaborated by co‐extrusion carried out at temperatures corresponding to the supercooled liquid region of the glass. For most glass/alloy c…
Abstract Thermal and γ radiation stability of iPP containing CaCO 3 nanoparticles were investigated by oxygen uptake procedure at 190 °C. The loading of iPP matrix was maximum 25% (w/w). The behavior on thermal oxidation was investigated for two formulations of iPP compounds differing by the surface characteristics of…
Abstract The interlayer surface of MgAl layered double hydroxide (MgAl‐LDH) was modified by exchanging about half of the interlayer nitrate anions by dodecyl sulfate anions (DS) to get MgAl(H‐DS) LDH, and then the MgAl(H‐DS) was melt intercalated by LLDPE to get the LLDPE/MgAl‐LDH exfoliation nanocomposites. The sampl…
Gibbs energies, activities, and chemical potentials of BaO and SiO 2 in melts of the BaO-SiO 2 system within the temperature range 1840–1970 K were determined. A significant negative deviation from the ideal behavior was found in the system studied.
The microstructure of transverse and longitudinal sections of a commercial AZ91 alloy processed by equal-channel angular pressing was examined by transmission electron microscopy. A high dislocation density and large number of deformation twins were observed in the investigated material. The {102}(matrix) // {012}(twi…
Diamond-like carbon films (DLC) were prepared by radio-frequency plasma-enhanced chemical vapor deposition (RF-PECVD) at a frequency of 13.56 MHz using methane (CH 4 ) and acetylene (C 2 H 2 ) at different RF powers. Optical emission spectroscopy (OES) was carried out to investigate plasma chemistry. The intensity of…
We investigated dry etching methods for the patterning of nanosized Ge 2 Sb 2 Te 5 (GST) patterns using high-density helicon plasma etching system. It was found that GST patterns of 10-nm-order size could not be formed in a suitable way owing to the damage of undesirable under-cut when the etching process was performe…
Abstract— The moving‐picture quality of several LCD modules was evaluated by using the quantitative parameter, normalized blurred edge width (N‐BEW), or the N‐BEW value normalized by time (N‐BET), measured and calculated by the developed time‐sequence‐image integration system which has taken LCD‐response characteristi…
Abstract The porosity of a propylitized granite from Charroux (France), with no fractures or sealed fractures, increases by more than four times from the unaltered (0.3%) to the altered rock (1.4%). This evolution results from several local porosity modifications which occur at different scales in the rock: (1) at the…
Aluminum films are vacuum-evaporated onto a ClO 4 - -doped green polycarbazole (PCz) film. The appearance of the resulting aluminum/PCz junctions drastically changes with time; the time-dependent fading of the metallic white color and green color of the PCz is observed during their storage in air, and colorless films…