Materials Literature
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The biocompatibility of commercially pure (cp) titanium stems from its chemical stability within an organism, due to a fine film of impermeable titanium oxide covering the metal surface, which guarantees its resistance to corrosion. Despite its biocompatible characteristic, this material does not promote the formation…
Abstract Hydroxyl‐terminated polybutadiene (HTPB) based sheet explosives incorporating insensitive 1,3,5‐triamino‐2,4,6‐trinitrobenzene (TATB) as a part replacement of cyclotrimethylene trinitramine (RDX) have been prepared during this work. The effect of incorporation of TATB on physical, thermal, and sensitivity beh…
By performing both open-aperture Z-scan and transient transmission measurements with femtosecond laser pulses in the near infrared region, the concentration dependence of two-photon absorption (2PA) and subsequent excited-state absorption (ESA) are investigated in acetone solution of 4-methoxy-2-nitroaniline (4M2N). O…
A avaliação da qualidade do solo é uma ferramenta importante para monitorar a sua degradação, bem como planejar a implantação de práticas sustentáveis de manejo. Neste trabalho, objetivou-se avaliar indicadores biológicos de qualidade do solo em um Latossolo Amarelo distrófico, submetido a diferentes sistemas de uso e…
The reactivity of the colloids formed in soil environments results from complex interactions between clay minerals, (oxy)hydroxides and organic matter of soils. The adsorption/desorption equilibria and kinetics of anionic and cationic species on/from natural colloids could substantially differ compared with their inte…
Abstract Methods for service life prediction of reinforced concrete structures exposed to chloride‐bearing environments require, amongst other parameters, the knowledge of the chloride threshold for pitting corrosion initiation (Clth). Nowadays, although the main factors influencing the chloride threshold are well kno…
This paper provides insights into the neutronic similarities between a representative high-capacity rail-transport cask containing typical pressurized water reactor (PWR) spent nuclear fuel assemblies and critical reactor state-points, referred to as commercial reactor critical (CRC) state-points. Forty CRC state-poin…
Molten salt with dissolved uranium is being considered for the Laser Inertial Confinement Fusion Fission Energy (LIFE) fission blanket as a backup in case a solid-fuel version cannot meet the performance objectives, for example because of radiation damage of the solid materials. Molten salt is not damaged by radiation…
Due to the inherent limitations of current methods of plastic waste disposal, there have been concerted efforts worldwide towards developing alternative, environment friendly and economic recycling processes. With an aim to recycle waste plastics in EAF steelmaking, carbon/slag interactions for a number of blends made…
Abstract Sheets of AA6056 and Ti6Al4V were butt‐joined by inserting the Ti‐sheet into the profiled Al‐sheet and by melting the Al‐alloy alone using a split beam Nd:YAG laser. To study microstructural effects on properties, the Al‐alloy was used in two tempers; T4 followed by post weld heat treatment T6, and in T6 foll…
A common characteristic of modern power transmission and distribution is the extensive use of underground electric cables. Because of tight economical constraints and limitation on space availability, public utilities around the world are striving to attain higher cable current carrying capability (ampacity), by means…
In this paper, a suitably designed textured surface is numerically investigated to be applied as a quadrature phase-shift keying (QPSK) reflector. The proposed arrangement uses the form of an artificial magnetic conductor printed on a dielectric substrate with the incorporation of surface mounted electronically contro…
Discharges between water drops present an ageing activity on a polymeric insulator surface. Such discharges can develop into arcs and can propagate to flashover in high pollution conditions. The water drops may be deformed and move during the arcing phenomenon. These mobile drops can directly change the physical lengt…
Combination of lignin matrices (including those modified with silicon oligomers or quaternary ammonium compounds) and such inorganic building blocks as copper and manganese cations (Cu2+, Mn2+) made it possible to synthesize novel hybrid organic-inorganic materials. The synthesized hybrid materials were characterized…
An optimized method of hydrogen production using an aluminum alloy with a small addition of Ga, In, and Sn is described. The alloy (95% Al and 5% Ga, In, and Sn) exhibits high chemical activity while reacting with water; the reaction results in the generation of free hydrogen. The microstructure and phase composition…
The wear resistance, corrosion resistance and hardness can be greatly increased by using low temperature QPQ salt-bath nitriding treatment. And it is a new strengthening method without distortion in the treating process. In this paper, 3Cr2W8V steel is dealt with QPQ salt-bath nitriding at 520°C, 540°C, 560°C and 2h,…
Radial-shear rolling is a promising means of improving seamless-pipe production, especially with the transition to continuous-cast billet. The use of radial-shear rolling radically expands the size range of pipe blanks that may be produced from billet with a limited diameter range. It is demonstrated that radial-shear…
Abstract Summary: Polymer particles decorated with metal nanoparticles were prepared by UV‐irradiation of polystyrene particles incorporating polymethylphenylsilane (PS/PMPS) and P[S‐co‐NIPAM]/PMPS particles (NIPAM: N‐isopropyl acrylamide) in the presence of metal salts. The metal nanoparticle/polymer hybrid particles…
A rigorous analysis of Electrostatic Discharge susceptibility of Multi Layer Ceramic (MLC) capacitors is carried out. The impact of ESD stress applied at the connector pins of an electronic control module, protected by utilizing 0603 package MLC capacitors is evaluated. Effectiveness of MLC capacitors for protection o…
A procedure was developed for treatment of gas-air flows to remove radioiodine using metallic copper in the temperature range 200–300°C. The compacted product containing CuI and metallic copper is a stable compound which can be used as a matrix for radioiodine disposal. The rates of iodine leaching from this compound,…