Materials Literature
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A dense, bulk ceramic of Ti3SiC2 containing impurities of TiC and Ti5Si3 was fabricated by hot pressing elemental powders of Ti, Si, and C. X-ray diffractometry, scanning electron microscopy, and transmission electron microscopy were used to determine the crystalline phases and observe the microstructure of sintered c…
The dielectric constant of an incipient ferroelectric EuTiO 3 exhibits a sharp decrease at about 5.5K, at which the antiferromagnetic ordering of the Eu spins simultaneously appears. This fact indicates the existence of a coupling between the magnetism and dielectric properties of EuTiO 3 . We propose a possible coupl…
Here we report Raman scattering studies of ropes of Single-walled carbon nanotubes (SWNTs) grown by a high CO pressure process. Five samples from five different batches were studied as a function of excitation wavelength. Three of these samples exhibited Raman spectra similar to that found for SWNTs made by pulsed las…
Room Temperature Scanning Micro-Hall Probe Microscope Imaging of Ferromagnetic Microstructures in the Presence of 2.5 Tesla Pulsed Magnetic Fields Generated by an Integrated Mini Coil, Sandhu, Adarsh, Masuda, Hiroshi, Oral, Ahmet
The reactions of nitromethane (CH 3 NO 2 ) on a thin-film oxide grown on Mo(110) are investigated to gain insight into the role of nitromethane in the catalytic reduction of NO by methane. Using a combination of temperature programmed reaction and infrared reflection-absorption spectroscopy, we find that nitromethane…
In this paper, silk fibroin (SF)/polyurethane (PU) blend films were fabricated to develop a new biomaterial for biomedical applications. These blend films were prepared using formic acid as a cosolvent, and structural characteristics and properties of blend films were investigated. FTIR results suggested that there wa…
Article Innovative Einsatzstähle als maßgeschneiderte Werkstofflösung zur Hochtemperaturaufkohlung von Getriebekomponenten was published on December 1, 2002 in the journal HTM Journal of Heat Treatment and Materials (volume 57, issue 4).
Potentiodynamic anodic polarisation measurements have been carried out on type 316L stainless steel (as a reference material) and on alloys 33 and 24 in a simulated flue gas desulphurisation environment in order to assess the localised corrosion resistance. The results showed that the pitting corrosion resistance was…
The test results from an earlier investigation by the author on the mechanical behaviour of a low nickel nickel-copper alloy exposed to a solution of 3·5%NaCl + 10%MgCl2 with and without ammonia indicated that the presence of 1% ammonia alters the failure mode and affects the load bearing capacity of the material. In…
LU2O7S12, monoclinic, C\Um\ (No. 12), a = 6.762(2) , b = 8.835(3) , c = 4.711(2) k, = 101.99(4), V= 275.3 3 , = 2, Rgf(F) = 0.019, wRretfF 2 ) = 0.045, T= 293 K.
Phase-modulation scatterometry is a metrology technique for determining, by means of a phase modulator as a key device, the parameters of gratings. The main source of error to be dealt with are the fluctuations of the phase-modulation amplitude. The grating zeroth-order reflectance modulated by the phase modulator is…
Abstract The use of non-wovens as absorbent products is increasing, as is the consumption of cotton fibres as raw materials for these products. This paper presents some results concerning the obtaining of absorbent non-woven products made from cotton fibres. A fibrous web was formed by the superposition of cotton band…
A simple method for measuring the ceramic-ceramic and metal-ceramic bond strength was presented, by which uniaxial tensile stress normal to the interface or shear stress in the interface can be produced using uniaxial compression load on a cross-bonded sample. Both tensile and shear bond strength were obtained by this…
Abstract This paper proposes a simplified mathematical and tabular method for assessing the risk of exothermic runaway reactions, based on the calculated hazard index. Intrinsic elements, such as reactivity, stability, exothermic enthalpy, etc., are presented as measures of severity of a potential runaway event. Simil…
The phase relationships in the CaHfTi 2 O 7 ‐Gd 2 Ti 2 O 7 (zirconolite‐pyrochlore) pseudobinary system were investigated, after heating at 1500°C, because of their importance in the design of pyrochlore‐rich titanate ceramics for immobilization of impure surplus plutonium. Up to 15 mol% of MgTi 2 O 5 and Al 2 TiO 5 w…
LU2O7S12, monoclinic, C\Um\ (No. 12), a = 6.762(2) , b = 8.835(3) , c = 4.711(2) k, = 101.99(4), V= 275.3 3 , = 2, Rgf(F) = 0.019, wRretfF 2 ) = 0.045, T= 293 K.
Abstract The temperature dependencies (10‐300 K) of seven Raman‐active mode frequencies in layered semiconductor gallium telluride have been measured in the frequency range from 25 to 300 cm ‐1 . Softening and broadening of the optical phonon lines are observed with increasing temperature. Comparison between the exper…
Based on the metals property of modifying the phase of an incident beam, a simple method for identifying the fast axis of a wave plate independent of a standard retarder is demonstrated. © 2002 Society
Abstract The dependence of the attenuation of both gamma rays and neutrons on lead concentration in leaded‐natural rubber composites incorporated with paraffin wax and boron carbide as radiation shields was investigated. Moreover, the dc conductivity and swelling characteristics of the rubber vulcanizates and the effe…
Abstract Two catena manganese carboxylato complexes [{Mn[m-C6H4(COO)2](C5H5N)2}n] (1) and [{Mn(3-C5H4NCO-O)2}n] (2) were synthesized and structurally characterized. Isophthalate together with pyridine as a capping ligand leads to a 1-D alternating chain structure of complex 1, while 3-pyridinecarboxylate (also known a…