Materials Literature
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A window-type environmental cell that can be used over the temperature range from room temperature to approximately 1000 K was improved by incorporating a new window material that increases resolution and contrast in high voltage electron microscopy. With this improvement, the resolution was a few nanometers and the m…
When Pb(Mg 1/2 Nb 2/3 )O 3 –35PbTiO 3 (mol%) (PMN–35PT) is sintered at 1200°C after packing in PbZrO 3 powder, the grains show normal growth with time invariant normalized grain size distributions. If 0.5 wt% MgO is added to PMN–35PT, abnormal grain growth occurs with the large abnormal grains developing nearly cubic…
Ti‐6Al‐4V alloy has attracted increasing applications as a metallic biomaterial in recent years thanks to its good corrosion resistance and biocompatibility. However, the poor corrosion‐wear resistance of the alloy is thus a major concern to potential users. In this paper, the electrochemical noise technique is used a…
The iron sulfate FeOHSO 4 studied was obtained as a dehydration product of metahohmannite Fe 2 (H 2 O) 4 [O(SO 4 ) 2 ] during a synchrotron real-time powder diffraction experiment. As quoted in the literature, FeOHSO 4 has iron atoms octahedrally coordinated with two hydroxyl groups and four sulfate O atoms, while eac…
Abstract Two guanidinate‐based terbium complexes [ i PrNC(N i Pr 2 )N i Pr] m TbCl 3– m [ m = 3 ( 1 ), 2 ( 2 )] were synthesized, and the crystal structure of 1 was determined by single‐crystal X‐ray diffraction. Complexes 1 and 2 were further characterized by elemental analysis, IR, and 1 H NMR spectroscopy. In compl…
The actual fabrication processes of targets for the transmutation of actinides in nuclear reactors will need to be dust‐free and compatible with automation and remote operation. The developments reported here mark an important technical breakthrough in the fabrication of highly active materials. The sol–gel external g…
Abstract A series of azobenzene derivatives containing glycine, l-alanine, l-valine, l-leucine, and l-isoleucine were synthesized and their gelation properties were examined. Although the azobenzene derivatives containing glycine, l-alanine, and l-leucine exhibited very low gelation abilities, other compounds of l-iso…
A common problem in synthetic organic chemistry is attaining proper contact between lipophilic organic compounds and inorganic salts. Various strategies, for example, phase transfer catalysis (Starks, C. M.; Liotta, C. L.; Halpern, M. Phase Transfer Catalysis: Fundamentals, Applications and Industrial Perspectives; Ch…
The clay minerals in Podzols and podzolic soils developed under coniferous forests in the Subarctic and Cool-temperate zones are characterized by the predominance of smectite and/or mica-smectite interstratified minerals in the eluvial horizons and chlorite-vermiculite intergrade in the illuvial horizons. A large amou…
This work reports the effect of pH on the process of mullite formation from mixtures of alumina and silica sols. The pH of the mixtures determines the charges of particle surfaces and affects their interactions and distributions. Mullite formation from amorphous precursors with an Al:Si molar ratio of 1:3, prepared fr…
Analysis of polarization curves and impedance spectra has shown that the surface chemistry of galvanized steels plays an important role in determining their corrosion behavior. Zn-Ni samples that were untreated or had been treated in a 10 mM Ce(NO3)3 solution had the lowest corrosion rates in 0.5 N NaCl. The efficienc…
Halloysite template has a tubular microstructure; its wall has a multi-layer aluminosilicate structure. A new catalytic method is adopted here, through the in-situ reduction of Pd ions on the surface of tubular halloysite by methanol to initiate electroless plating; the detailed deposition features of Pd nanoparticles…
A novel polymer thin film embedded carbon nanotube (PECNT) sensor was developed for ultra-low-power micro thermal sensing. The basic fabrication process of this sensor includes AC electrophoretic manipulation of multi-walled carbon nanotubes (MWNT) bundles on a silicon substrate and embedding them inside parylene C la…
The guanidinium chloride- and urea-induced unfolding of FprA, a mycobacterium NADPH-ferredoxin reductase, was examined in detail using multiple spectroscopic techniques, enzyme activity measurements and size exclusion chromatography. The equilibrium unfolding of FprA by urea is a cooperative process where no stabiliza…
In order to optimise the hot die processes of Ti–10V–2Fe–3Al alloy, the effects of forging processes on the microstructures and mechanical properties were studied and processing maps were used to try to aid the process design. The results show that processing maps for Ti–10V–2Fe–3Al alloy exhibit three process ranges,…
The association of the cationic dye indoheptamethine cyanine with various anionic dyes (four sulfonephthaleins and five xanthenes) in aqueous solutions was detected using the Vis-spectroscopic method. The values of the association constants are within the range (10(4) to 7×10(7) mol-1 L). In all the cases a substantia…
Abstract The interactions of hardness ions (i. e., Ca, Mg, Ba) with anionic polymeric scale inhibitors (SI) containing different functional groups has been investigated using a turbidity technique. It has been found that all SI tested form insoluble salts with hardness ions under the experimental conditions used (pH 7…
As a function of film orientation, the intrinsic effective piezoelectric coefficient e31,f is generally formulated for a substrate-constrained ferroelectric film. Numerical results are obtained for Pb(ZrxTi1−x)O3 (PZT) thin films with tetragonal and rhombohedral compositions. It is illustrated that the optimal orienta…
Abstract The liquid‐crystalline behaviour of copper( II ) and nickel( II ) complexes of a mesogenic Schiff‐base ligand derived from N , N' ‐disalicylidene‐1,2‐phenylenediamine (salophenH 2 ) and of the corresponding trinuclear mixed copper( II )/lanthanum( III ) and nickel( II )/lanthanum( III ) complexes was investig…
The structures of eight heterophase interfaces between cubic ZrO2 and NiO simulated by molecular dynamics (MD) are compared with those of the corresponding isolated surfaces to better understand the factors influencing interface formation and coherency in ceramic oxides. The near coincident site lattice (NCSL) theory…