Materials Literature
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The Jominy end-quench test is used to measure the hardenability of a steel, which is a measure of the capacity of the steel to harden in depth under a given set of conditions. This article considers the basic concepts of hardenability and the Jominy test.
The morphology of barium sulfate (BaSO4), synthesized using the hydrothermal reaction of BaII–aminocarboxylate chelating precursors, was investigated. The precursors ethylenediaminetetraacetic acid (EDTA), bis(2-aminoethyl)ethyleneglycoltetraacetic acid (EGTA) and nitrilotriacetic acid (NTA) were dissolved by heating,…
This paper discusses methods to minimise density gradients in moulded rigid polyurethane foams of densities 0.35 g/cc and 0.80 g/cc. Methods examined were changing the nature and concentration of the amine catalyst, the use of high functionality isocyanates and varying the mould temperature. All methods can reduce the…
© 2001 The Electrochemical Society. All rights reserved.
Une loi de distribution d’orientation aléatoire des fibres du composite SMC R42 a pu être établie par une analyse d’images des structures au MEB. Cette distribution explique les modestes caractéristiques mécaniques du matériau et en l’occurrence une limite d’endurance à 106 cycles voisine de 60 MPa déterminée expérime…
The fractal characteristics of dendrite and cellular structure of nickel-based superalloy K5 are investigated under directional solidification. Results show that the fractal dimension of the dendrite increases from 1.228 to 1.418 as the withdraw speeds change from 40 to 264 µm/s, whereas the fractal dimension of the c…
The dielectric spectra of CuInP2Se6, a new ferroelecric, is presented. Dielectric dispersion caused by diffuse soft modeis observed above 1 MHz. The soft mode softens down to 0.7 GHz at the phase transition temperature Tc = 234 K.
Research Article| January 01, 2001 Molecular Dynamics Simulations of Silicate Glasses and Glass Surfaces Stephen H. Garofalini Stephen H. Garofalini Department of Ceramics and Materials Engineering Rutgers University Piscataway, New Jersey, 08854, U.S.A. Search for other works by this author on: GSW Google Scholar Aut…
The miscibility and crystallization behavior of poly(ether ether ketone ketone) (PEEKK)/poly(ether imide) (PEI) blends prepared by melt-mixing were investigated by differential scanning calorimetry. The blends showed a single glass transition temperature, which increased with increasing PEI content, indicating that PE…
While Vortex Spinning is hailed as a revolutionary new technology it can also be viewed as a natural development in the technology of fasciated yarn production. From the earliest inception of fasciated yarns it was evident that there were limitations, which precluded its wide acceptance. From an understanding of the f…
Metal deposition and dissolution on diamond and diamond-like materials have different characteristics than on metallic electrodes and typical graphitic carbons. The behavior of copper on the recently developed tetrahedral amorphous carbon incorporating nitrogen (taC:N) film materials is addressed with quantitative spe…
Measurements of the thermophysical and structural properties of liquid materials at high temperature have undergone considerable development in the past few years. Following improvements in electromagnetic levitation, aerodynamic levitation associated with laser heating has shown promise for assessing properties of di…
Because of many suitable properties, collagen sponges are used as an acellular implant or a biomaterial in the field of tissue engineering. Generally, the inner three-dimensional structure of the sponges influences the behavior of cells. To investigate this influence, it is necessary to develop a process to produce sp…
The correlation between corrosion rate and compositions of crystalline corrosion products formed on weathering steels exposed to different amount of air-borne sea salt particles has been investigated by the X-ray diffraction method. The mass ratio (α⁄γ) of crystalline α-FeOOH to γ-FeOOH, in the rust formed on the weat…
In this review paper, research on solute redistribution coefficients for equilibrium, near equilibrium and non-equilibrium solidification processes were first analyzed. Then, different models advanced since the 1950s for solute redistribution during the directional solidification process with a planar interface were s…
An extended Rayleigh model for laser generated bubbles in water and soft tissue is presented. This model includes surface tension, viscosity, a realistic equation of state, material strength and failure, stress wave emission, and linear growth of interface instabilities. The model is validated by comparison to detaile…
Many elements in concrete can become activated by neutrons in a cyclotron vault, but only a few of the activation products are long-lived. The most prominent of these are Eu-152, Eu-154, Co-60, and Cs-134 which build up over time from (n, γ) reactions in trace amounts of stable Europium, Cobalt, and Cesium that are no…
Transport of permanent gases (N 2 , O 2 , CO 2 ) and of saturated organic vapours of benzene, toluene and methanol through membranes based on poly(ethylene adipate)-crosslinked poly(amide-imide)s was studied. The membranes containing more than 50 wt.% of non-polyimides showed higher permeability coefficients (by 2-3 o…
Polycrystalline magnesium generally fractures intergranuarly under dynamic loading, and exhibits limited ductility owing to its HCP structure. In this study, improvement of tensile mechanical properties under dynamic loading has been demonstrated for a commercial magnesium alloy of AZ31. A commercial AZ31 alloy was su…
Chemical Synthesis and Electrochemical Properties of Poly(cyano-substituted-diheteroareneethylene) as Conducting Polymers for Electrochemical Supercapacitors , Soudan, Patrick, Ho, Hoang Anh, Breau, Livain, Belanger, Daniel