Materials Literature
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Through thickness, hoop, and spanwise component stresses were calculated for two Ceramic Matrix Composite (CMC) vane configurations. The analyses are for the first stage vane of a High Pressure Turbine. One configuration is for a vane with trailing edge ejection, and the other has no trailing edge ejection. The effect…
[Article in J. Appl. Polym. Sci. 2013, 131, DOI: 10.1002/37980] In the published article cited above, the below errors were discovered. Page 4940 the 2nd sentence under the sub-section Material Characterization: The nanocomposites with 37.73 and 44.44 wt % of BO in PDMS were sectioned with a diamond knife on a Reicher…
A multilayer surface plasmon resonance biosensor (SPRB) incorporating a grating-graphene configuration is investigated for enhanced sensitivity. The numerical analysis of the impact of integrating a periodic array of subwavelength grating on top of a layer of graphene sheet for improving sensitivity is presented. The…
Fast cooling to deep supersaturation for solvent crystallization seems to have two major components. One involves mainly the thermodynamics or phase equilibrium chemical thermodynamics of deep supersaturation. The other component focuses on the fast-cooling or heat-transfer aspect. All previous related crystallization…
Ba(ZrxTi1-x)O3 (BZT) thin films with different Zr contents were deposited on (100)MgO and (100)Pt/(100)MgO substrates by RF-magnetron sputtering using metal targets. The BZT thin films had a single perovskite phase with only (001)/(100) orientation. In all cases, the ratio of Ba/Ti was stoichiometry and BZT films poss…
Particulate enhanced oxide ceramics are an attractive class of materials for high temperature applications because they possess many of the high temperature capabilities of monolithic ceramics but also have enhanced mechanical properties due to their multi-phase structure. High temperature structural ceramics have the…
This paper describes the theoretical and simulation studies of both homogenous and heterogeneous nucleation, the phenomena that refers to the formation of stable nuclei prior to the growth of nanoclusters including nanofilms and quantum dots. Essentially, a single cluster may contain few thousand of atoms, and interac…
We investigated the La-substitution and the pressure effect on the Kondo semiconductor CeRu 2 Al 10 , which shows an unusual antiferromagnetic (AFM) order with an AFM ordered moment (m AF ) parallel to the orthorhombic c-axis.With decreasing Ce concentration, the direction of m AF is switched from the c-axis to the b-…
The assessment of Bondcoat/Thermal barrier coating systems is an inherent part of the lifing process of gas turbine component. On the one hand, coatings are considered in the constitutive modelling — e.g. in the thermal model and for the prediction of eigenfrequencies of gas turbine blades. On the other hand, the infl…
In this study, the use of sepiolite, formed as fibers in nature, in the production of fiber‐diopside crystals and its effect on crystallization were researched. Sintering process was performed for both pellet and powdered samples. Grain–grain interactions in pellets were effective in diopside crystallization during si…
Using polarization-dependent x-ray photoemission electron microscopy, we have investigated the surface effects on antiferromagnetic (AFM) domain formation. Depth-resolved information obtained from our study indicates the presence of strain-induced surface AFM domains on some of the cleaved NiO(100) crystals, which are…
Abstract Low‐Co La 1.8 Ti 0.2 MgNi 8.9 Co 0.1 alloys were prepared by magnetic levitation melting followed by annealing treatment. The effect of annealing on the hydrogen storage properties of the alloys was investigated systematically by X‐ray diffraction (XRD), pressure‐composition isotherm (PCI), and electrochemica…
The high temperature oxidation behavior of detonation-gun sprayed Cr3C2-NiCr coatings with and without 0.4 wt. % CeO2 additive on Ni-based superalloy inconel-718 is comparatively discussed in the present study. Oxidation studies were carried out at 900°C for 100 cycles in air under cyclic heating and cooling condition…
We report an ultra-high pressure single-crystal NMR experiment up to 7.3 GPa on the stoichiometric NaFeAs, which is a parent compound of the iron pnictide superconductivity. The structural transition temperature T O , which is originally 57 K at 0 GPa and 12 K above the antiferromagnetic transition temperature T AF ,…
We report enhancement of photovoltaic properties of highly oriented BiFeO3 (BFO) thin films. The single phase rhombohedral R3c space group structure was confirmed by XRD and Raman spectra in the films grown on SrTiO3 (111) substrates using RF magnetron sputtering. The films of BFO were characterized in planar geometry…
Poly[N-isopropylacrylamide-co-(maleic acid)], poly(NIPA-co-MA), was synthesized by radical polymerization in an aqueous solution composing of 35% mol N-isopropylacrylamide/maleic acid. Poly(NIPA-co-MA) hydrogel nanofibrous membrane was fabricated by electrospinning using ethanol as solvent. The electrospun nanofibers…
In this paper two different advanced control approaches for a pressurized SOFC hybrid system are investigated and compared against traditional proportional–integral–derivative (PID). Both advanced control methods use model predictive control (MPC): in the first case, the MPC has direct access to the plant manipulated…
We have carried out 11 B-nuclear magnetic resonance (NMR) and X-ray diffraction measurements on the intermediate valence compound SmB 6 under high pressure. The temperature dependence of nuclear quadrupole resonance frequency Q , obtained from the 11 B-NMR measurements, is dominantly contributed from on-site charge di…
Neutron scattering studies were carried out for investigating heavy-electron-like behaviors of PrCu4Au. Excitation spectra are composed of crystal-field (CF) excitations in the Pr3+4f2 electron configuration and a broad component. The CF splitting ground state is a triplet 5. The type-II antiferromagnetic ordering cha…
Models of finite rate combustion chemistry based on tabulation have been found to be efficient and accurate for a broad range of fuel and flame configurations. However, the modelling of formation of oxides of nitrogen remains a challenging issue. Even recent developments that take into account heat losses do not provi…