Now showing items 21-29 of 29
Thermodynamic properties of metastable Ag‐Cu alloys
(The American Institute of Physics, 1993-09-01)
The enthalpies of formation of metastable fcc Ag‐Cu solid solutions, produced by ball milling of elemental powders, were determined by differential scanning calorimetry. Experimental thermodynamic data for these metastable ...
Effect of hydrogen on surface roughening during Si homoepitaxial growth
(The American Institute of Physics, 1993-12-27)
Hydrogen is shown to have a strong influence on the evolution of surface morphology during low temperature (310 °C) Si(100) homoepitaxy. Molecular beam epitaxy growth in the presence of deuterium shows a surface roughness ...
Controlling strength and toughness of multilayer films: A new multiscalar approach
(The American Institute of Physics, 1993-07-15)
Multiscalar films are produced in order to combine both toughness and strength into a multilayer film. These structures incorporate both a strengthening phase and a toughening phase in a compositionally modulated microcomposite. ...
Effect of H on Si molecular‐beam epitaxy
(The American Institute of Physics, 1993-12-01)
In Si crystal growth by molecular‐beam epitaxy (MBE) at low temperatures there is known to be an epitaxial thickness: an initially crystalline regime before the deposited film becomes amorphous. The predominant impurity ...
Thermodynamic and magnetic properties of metastable FexCu100−x solid solutions formed by mechanical alloying
(The American Institute of Physics, 1993-07-15)
Metastable solid solutions of Fe and Cu, which are immiscible in equilibrium, have been formed using high-energy ball milling of elemental powder mixtures. Single-phase face-centered-cubic (fcc) solid solution was obtained ...
Toughening mechanisms in thermoplastic-modified epoxies: 1. Modification using poly(phenylene oxide)
(Elsevier, 1993-09)
An epoxy based on the diglycidyl ether of bisphenol A (DGEBA) has been modified with poly(phenylene oxide) (PPO) and cured with piperidine. A two-phase alloy resulted, in which the DGEBA epoxy was the continuous phase. ...
Effect of drawing on structure and properties of a liquid crystalline polymer and polycarbonate in - situ composite
(Society of Plastics EngineersWiley Periodiocals, Inc., 1993-07)
Fibers (strands) with various draw ratios were spun from the liquid crystalline state of a pure aromatic liquid crystalline copoly(ester amide) and the melts of its blend with polycarbonate. Scanning electron microscopy ...
Enthalpies of formation and crystallization of amorphous Zr1-xAlx and Zr1-xNix alloys: calculations compared with measurements
(Elsevier, 1993-05-07)
The enthalpies of formation of amorphous Zr1-xAlx and Zr1-xNix alloys have been calculated based on CALPHAD data and compared with experimentally determined values. A direct extrapolation of the thermodynamic functions of ...
The toughening of polyamide-6 by brominated poly(isobutylene-co-p-methylstyrene): fracture and toughening mechanisms
(Elsevier, 1993-11)
A study on the toughening of polyamide-6 (PA-6) with a new elastomeric modifier, brominated poly(isobutylene-co-p-methylstyrene) (BrXP-50), was conducted. Morphological analyses and mechanical tests were combined to evaluate ...