Materials Literature
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Proton and hydrogen diffusion in titanium oxide thin films is of significant interest because of its importance in barrier, sensor, and catalytic coating applications. In this study, a novel method based on potential–pH response measurement was used to determine proton chemical diffusion of titanium oxide thin films.…
Phosphorus (P) soil test methods have had limited success in prediction of lowland rice (Oryza Sativa L.) response to P fertilization. Therefore, the relative efficiency of Olsen, Colwell, Bray1, Soltanpour, Mehlich 3, Morgan, Sr-citrate, and Resin to predict P availability in waterlogged soils was evaluated by incuba…
Phenolic wastewater treatment in a new ozone reactor was investigated. The reactor was designed in such a fashion that gas induction was created in the reactor headspace by the high-speed action of an impeller turbine inside a draft tube to maximize the ozone utilization. Another important feature of the present react…
High-frequency broad-band (65–240 GHz) EPR is used to study impurity centers of bivalent chromium in a CdGa2S4 crystal. It is found that the EPR spectra correspond to tetragonal symmetry. The spin Hamiltonian H = βB · g · S + B 2 0 O 2 0 + B 4 0 O 4 0 + B 4 4 O 4 4 with the parameters B 2 0 =23659±2 MHz, B 4 0 =1.9±1…
The decarburization of cast irons graphite has been studied as part of the process to make high-value-added cast iron. The aim is to develop new uses for cast irons. Once the graphite has been eliminated in a surface layer by high temperature oxidation in air, other materials conferring improved properties can be infi…
Numerical methods can be applied on metallurgical processes like engineering design of a steel ladle. In this study, the thermomechanical behaviour of refractory lining of a steel ladle which is lifted by a crane was investigated. To simulate this behaviour coupled heat transfer – structural analysis was made by using…
The Phebus FPT1 test at IRSN, selected to be ISP-46, has been analyzed by the IMPACT/SAMPSON code, a detailed severe accidents (SAs) analysis code for an LWR. The results for the Bundle phase, involving an examination of bundle degradation and fission products release during SA conditions, were reported. Conclusions o…
Soluble phthalocyanines, including organo-soluble tetrakis(2,9,16,23-tert-butylphthalocyanines) ( M ( TBPc ), M = H 2 , Cu , Mg ; M ( TBPc ) 2 , M = Tb , Dy ) as well as the water-soluble sodium salt of sulfonated phthalocyanines (( MPc ( SO 3 Na ) 4 ), M = Cu , Zn , Mg ), and perylene tetracarboxylic derivatives (N,N…
The development of the microstructure in Mg-Al-Ca alloys was investigated both in the as-cast condition and after solution heat treatment at 415 °C for 0.25 -120 h, using secondary electron imaging, electron probe microanalysis and X-ray diffraction analysis in combination with light microscopy and image analysis. The…
Abstract For a vuleanized elastomer compound containing no filler, variation of dynamic moduli with strain was examined in the transition zone approaching glass transition at 0.1, 1, 10, and 15 Hz. In the complete absence of filler‐filler/filler‐polymer interactions, the nonlinearity in dynamic moduli becomes enhanced…
Electrically induced photoluminescence (PL) quenching from reverse-biased p+-type porous silicon (PS) and forward biased oxidized n-type PS, as well as their dynamics, have been investigated. The two systems exhibit common properties. The energy selectivity of the PL quenching by the applied potential is much lower th…
Abstract The title compound, a versatile and chemically stabilized oxidant, which is used technologically on a large scale, builds up an intercalation‐type of crystal structure with alternating sheets of sulfate and peroxomonosulfate anions, interspersed by the potassium cations. The sulfate ions are joined by a very…
The mechanism of hypervelocity impact crater formation in metallic and composite space debris shields has been investigated. Both normal and oblique impact crater formations have been investigated using 2.2-mm-thick aluminum (At 2017), carbon fiber reinforced plastic (CFRP) and aramid fiber reinforced plastic (AFRP) s…
Carbides and the matrix microstructure in high carbon hard facing weld metals reinforced with strong carbide forming elements were investigated by means of electron probe microanalysis (EPMA), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The thermodynamics and the effect on the matr…
A systematic transmission electron microscopy (TEM) study was performed on the size distribution of antiphase domains in omphacite from eclogites from the Adula/Cima Lunga nappe. The measured mean antiphase domain size is shown to depend on peak temperature, duration of peak metamorphism, cooling rate, and composition…
To provide additional validation data for the multizone airflow and contaminant model, CONTAMW, experiments were performed in an occupied 3-story townhouse in Reston, VA. A tracer gas, sulfur hexaflouride (SF6), was manually injected within one room of the house and the concentration of SF6 was measured in each zone.…
The high‐temperature oxidation of SiC‐based structural ceramics is accelerated in the presence of KCl vapors. The corrosion products are primarily alkali silicates and the rate of attack is approximately proportional to the vapor pressure of KCl in the atmosphere. When both KCl and H 2 O are present in the oxidizing a…
In the automotive and aeronautic industries, security is of prime importance and so corrosion prevention is essential. Steel parts were once protected with deposits such as cadmium or zinc - nickel produced using a chromatation treatment but recent environmental directives dictate that these methods are no longer acce…
Frequency (10 Hz–1 MHz) and temperature (22–80 °C) dependent dielectric constant (both real and imaginary) of a ferroelectric liquid crystal ZLI-4851 film (21 μm thickness) showing a second order SmC*-SmA phase transition around 63.2 °C have been reported. The variation of dielectric constant as a function of temperat…
Thermal decomposition of TTIP was compared with oxidation of TiCl 4 in morphology and primary particle size of produced TiO 2 particles in a tubular reactor 2.7 cm in diameter and 54 cm in length under equal rate constants. The reactor temperature was varied from 850 to 1000°C for TiCl 4 oxidation and from 492 to 579°…