Materials Literature
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The effect of the alloy compositions on the cyclic bending fatigue behaviors of the Ti–Ni base shape memory alloy wires was investigated using a rotary bending fatigue tester specially designed for wires. The fatigue test results were discussed in connection with the static tensile properties. The results were summari…
Alkylation of pyridine by methanol to methylpyridines has been studied in the vapour phase in a fixed bed reactor, in the temperature range 473–723 K over the Zn1 − xMnxFe2O4 (x = 0, 0.25, 0.50, 0.75 and 1) ferrospinel system. 2-Picoline and 3-picoline were found to be major products. It was observed that, systems pos…
Mechanisms Of Mineral Scale Inhibition M.B. Tomson; M.B. Tomson Rice University Search for other works by this author on: This Site Google Scholar G. Fu; G. Fu Rice University Search for other works by this author on: This Site Google Scholar M.A. Watson; M.A. Watson Rice University Search for other works by this auth…
The performance of supported platinum as an anode catalyst in a hydrogen sulfide solid oxide fuel cell with yttria-stabilized zirconia (YSZ) as the electrolyte has been examined in the temperature range of 700-900°C. The highest current density achieved at 800°C was 100 mA/cm 2 and the highest power density was 15.4 m…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation David I. Poston, Richard J. Kapernick, Ray M. Guffee, Robert S. Reid, Ronald J. Lipinski, Steven…
An investigation was conducted on the use of rattan (cane) furniture waste as furnish material for the manufacture of cement-bonded particleboard (CBP). Laboratory scale CBPs were fabricated from hot water pretreated chopped strands of mixed rattan waste obtained from rattan furniture workers in Ibadan, Oyo State, Nig…
Changes in fracture and hydrogen evolution behaviors in Cu-added ultra low carbon steels due to hydrogen charging were examined by small punch (SP) tests and thermal desorption spectroscopic (TDS) analyses, respectively, to understand effect of morphology of copper precipitation particles on susceptibility to hydrogen…
The purpose of this study was to evaluate the effect of sodium content on the crystallization behavior of glass-ceramics in the system SiO(2)-MgO-CaO-Na(2)O-K(2)O-F. Five glass compositions were prepared with increasing sodium content. The compositions were melted at 1400 degrees C for 2 h and cast into 60 x 12-mm ing…
Nanocomposites are expected to exhibit new and improved properties when compared to their microcomposite counterparts. By lowering the particle size to nanodimensions (<100 nm), the special effects in polymer composites appear. In this study we compared the properties of composites filled with micro- and nano-sized ca…
A wide range of different space nuclear systems are currently being evaluated as part of the DOE Special Purpose Fission Technology program. The near-term subset of systems scheduled to be evaluated range from 50 kWe gas-, pumped liquid metal-, or liquid metal heat pipe-cooled reactors for space propulsion to 3 kWe he…
A fixed-spin-moment (FSM) calculation is carried out for Fe 2 P using the linear muffin-tin orbital method. It is found that the Fe atom at the 3f site shows a metamagnetic behavior, while the Fe atom at the 3g site is ferromagnetic. In order to study the magnetic properties of this compound at finite temperatures, a…
The reactions of manganocene, Cp2Mn, with 2-aminopyridine (L1H) or 2-amino-3-bromo-5-methylpyridine (L2H) give the novel hexanuclear and octanuclear Mn(II) amido cage compounds [Cp2Mn3(L1)4]2 (1) and [Mn8(L2)12(mu 4-O)2] (2); magnetic measurements on which provide a rare insight into the magnetic properties of amido-b…
The visual appearance, press formability and the corrosion resistance of electrogalvanized steel sheets change depending on the morphology of deposited Zn. In this paper, the effects of plating factors such as the surface condition of steel substrate, electrolysis factors and the bath condition on the morphology of de…
The stoichiometric perovskites RMnO3 (R = rare earth) experience Jahn–Teller (JT) transitions as a function of temperature and R size similar to that recently described for LaMnO3. We have investigated the JT transition for R = Pr by ATD techniques and neutron powder diffraction. This transition takes place at approxi…
Amorphous nitric acid hydrates in the concentration range 25 to 50 mol% HNO3 were prepared by low-temperature quenching of the respective HNO3/H2O aerosols. Subsequently, a properly selected thermal treatment enabled the phase distribution of two thermodynamically stable (NAM, β-NAT) and three metastable phases (α-NAD…
Variation in defect microstructures introduced by compression of three fcc metals, Al, Cu and Ni, was investigated over a wide range of strain rate, from 10 m 2 to 10 6 /s. Dislocations formed under high-speed deformation are randomly distributed, whereas dislocations formed under low-speed deformation develop into ce…
Metallic materials display strong size effect when the characteristic length of deformation is of the order of microns. The theory of mechanism-based strain gradient (MSG) plasticity established from the Taylor dislocation model has captured this size dependence of material behavior at the micron scale very well. The…
This paper describes magnetic properties and microwave absorption properties of polymer-protected cobalt nanoparticles. Cobalt nanoparticles were prepared using the thermal decomposition of dicobalt octacarbonyl in ethylene glycol. They were stabilized and dispersed by coexisting with poly(N-vinyl-2-pyrrolidone) (PVP)…
Abstract Components of commercial nuclear reactors are subjected to neutron bombardments that can modify their mechanical properties. Prediction of in-service and post-service behaviors generally requires irradiation in so-called “test reactors” as well as subsequent mechanical testing in specialized hot cell faciliti…
Native cellulose samples with high crystallinity were pyrolyzed up to above 2000 C and the resulting carbon structures were examined. The drying method for water-swollen or water-suspended cellulose prior to pryrolysis was found to significantly affect preservation of the large surface areas of the original cellulose;…