Materials Literature
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This comprehensive and authoritative volume to decommissioning of nuclear facilities will serve as a complete introduction to those new to the field, as well as an up-to-date desk reference on regulations and resources for experienced practitioners. The handbook will provide a forum building a network of consistent ap…
Standard mixtures of amorphous material (volcanic glass) and crystalline phase (equally participated montmorillonite, muscovite, heulandite, quartz, and calcite) were prepared at the following weight proportions after weighting: 100-0, 75-25, 50-50, 25-75 and 0-100, respectively. From their XRD patterns and using two…
The effects of vacancy depletion and solute atom depletion on the microstructural evolution of the precipitation-free zone (PFZ) near the grain boundary have been examined by Monte Carlo simulations with Kawasaki dynamics. The solute depletion caused by a precipitation of stable phase at grain boundaries lead to a wel…
Upon the commencement of the analytical effort to characterize the impact dynamics and damage of the Space Shuttle Columbia leading edge due to External Tank insulating foam, the necessity of creating analytical descriptions of these materials became evident. To that end, material models were developed of the leading…
Abstract Multilayer thin films prepared from weak polyelectrolytes can exhibit a rich suite of anomalous physicochemical properties. One of the major factors that influence the properties of such films is the acid/base chemistry of the weak functional groups of the poly- electrolytes. In fact, the apparent dissociatio…
The surface interaction between cotton cellulose and urea was studied by measuring solid state 13C CP MAS NMR spectra and relaxation times. The investigation of cotton cellulose surface interactions is inherently difficult as the surface regions constitute only a small proportion of cotton fibers and an important part…
Microelectronic devices and materials now represent one of the largest manufacturing sectors in the world. Like many large industries, growth has been accompanied by increasing concerns regarding environmental emissions and impact. One challenge for the high end of the market is the identification of alternative proce…
Super-long continuous Ni-filled carbon nanotubes were synthesized by the chemical vapor deposition (CVD) method with cloth-like single-walled carbon nanotube (SWNT) raw soot produced by the arc-discharge method as catalyst; the Ni nanowires inside the carbon nanotubes are single crystals, with an average diameter of 4…
The boron trifluoride-catalyzed Rothemund condensations of phenylpropargylaldehyde with 4,7-dihydro-4,7-ethano-2H-isoindole or 3,4-diethylpyrrole in dichloromethane at low temperature give 5,10,15,20-tetrakis(phenylethynyl)porphyrins bearing bicyclo[2.2.2]octadiene and octaethyl substituents, respectively. The former…
The effect of iodide ions on the corrosion inhibition of mild steel in 0.5 M sulfuric acid in the presence of poly(4-vinylpyridine) (P4VP) was studied by weight loss and different electrochemical techniques such as electrochemical impedance spectroscopy, potentiodynamic polarization and polarization resistance measure…
The dispersion relations for metamaterial cylindrical guides are found and their Brillouin diagrams are drawn for different guide parameters. It is found that the transverse propagation coefficient of the first TMz mode and the first TEz mode can be either real or imaginary. The longitudinal propagation coefficient of…
Abstract The end form of produced cloth depends on the qualities of the build material and its con-struction requirements. These can be estimated subjectively or objectively after the cloth is fi nished. The drape of the fabrics and the fused panel is one of the most signifi cant proper-ties which characterise the sha…
Poly(2,4-hexadiyne-1,6-diol)(poly(HDiD)) was coated on the outer walls of carbon nanotubes (CNTs) with the aid of supercritical CO(2), resulting in poly(HDiD)/CNT nanocomposites, which possess optical properties originated from poly(HDiD).
Carbon as an element constitutes the building block of some of the hardest materials (such as diamond, boron carbide and transition metal carbides) known to date. It is also a key ingredient of amorphous diamondlike carbon (DLC) and carbon nitride coatings, which offer exceptional friction and wear properties to slidi…
This paper has presented some popular methods used to determine the kinetic parameters from nonisothermal thermogravimetric analysis (TGA) data. These methods include the improved Doyle–Ozawa method, and the nonlinear regression method. The above-mentioned methods along with a new method proposed by the present author…
The objective of this work was to determine the changes of thermal and surface properties of a bentonite from Çankιrι after activation using different concentrations of H2SO4 solutions (0.5–4 M). XRD, FTIR, DTA, and TG analyses of the samples were performed to examine the structural changes of the bentonite before and…
Results of solubility determinations on naturally-occurring calcium silicate hydrates are reported for okenite, gyrolite, tobermorite and xonotlite: also for phase pure laboratory preparations of tobermorite, afwillite, foshagite and hillebrandite. Samples, typically 100–200 mg, were contained in sealed reactors and d…
A new warm forging method for magnesium alloys is proposed by taking their material properties into consideration. Since the ductility of Mg alloys is low at room temperature, the forging operation is conducted in the temperature range of 200—400°C. In the warm forging of Mg alloys, the billet is easily cooled down in…
Electromagnetic wave absorbing properties of composite sheets using Ar gas atomized and attrition milled powders of several soft magnetic compositions were examined. The sheet of Fe-50Ni powders whose aspect ratio was the largest of all tested materials showed the maximum u" value, and the sheet of Fe-6Si powders whos…
In previous papers, we investigated via Monte Carlo simulation the order-disorder behavior of an individual octahedral phyllosilicate sheet, with respect to two-species systems Al/Fe, Al/Mg, and Fe/Mg, and some three-species systems Al/Fe/Mg that were relevant to clay compositions found in nature. We have extended the…