Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Ceramic materials are commonly used as ballistic protection materials. The response of a ceramic to impact, perforation and penetration is complex and only limited physical instrumentation can be used in experiments. This paper demonstrates how a hydrocode, such as AUTODYN, can be used to aid in the understanding of t…
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 M. J. Sablik, Y. Chen, D. C. Jiles; Modified law of approach for the magnetomechanical model. AIP…
The behavior of mutually coupled cavitation bubbles can change considerably when a finite speed of sound propagation in the liquid is taken into account. This holds for the radial oscillations of the bubbles as well as for the interaction (Bjerknes) forces between them. Starting from linear analysis of the equations o…
A novel preparation route for ATZ (alumina toughened zirconia) ceramics is presented, using a commercial ATZ powder (a mixture of 20 wt.% alumina and 80 wt.% zirconia containing 3 mol.% yttria) as a solid filler and an ATZ sol or gel (of the same composition) as a liquid binder for paste extrusion at room temperature.…
A macrosegregation defect, commonly termed freckle, has limited the maximum diameter of remelted ingots of some Nbstrengthened nickel base superalloys. Two aspects of freckle formation were studied in three commercially important superalloys 718, 706 and 625: 1) the segregation characteristics which provide the drivin…
Four new chemical constituents including one naphthalene derivative, named calotropnaphthalene, two terpene derivatives, namely calotropises juiterpenol and calotropisesterterpenol and an aromatic product designated as calotropbenzofuranone along with a known compound, sucrose, have been isolated from the roots of the…
An alloy development effort was undertaken to improve the corrosion performance of zirconium-based alloys for high-burnup applications. As part of that effort, three binary alloys were studied to establish the relationship between alloy chemistry, processing, microstructure, and corrosion behavior. the binary addition…
Propagation of flexural localized vibration modes along edges of anisotropic wedges is considered in the framework of the geometrical-acoustics approach. Its application allows for straightforward evaluation of the wedge-mode velocities in the general case of arbitrary elastic anisotropy. The velocities depend on the…
Lead zirconate titanate [ Pb ( Zr 0.53 Ti 0.47 ) O 3 ] films of thickness ranging from 70 to 680 nm have been prepared by the radio‐frequency sputtering technique. The current density‐electric field ( J‐E ) characteristics of the films were investigated. Films with thicknesses above 280 nm show a varistor‐type J‐E cha…
Fourier Transform Infrared Spectroscopy Study of Thermal Annealing Behavior of ECR Pulsed Plasma Deposited Fluorocarbon Thin Films from 1,1,2,2‐Tetrafluoroethane, Labelle, Catherine B., Gleason, Karen K.
Coiled coils consist of two or more amphipathic a-helices wrapped around each other to form a superhelical structure stabilized at the interhelical interface by hydrophobic residues spaced in a repeating 3-4 sequence pattern. Dimeric coiled coils have been shown to often form in a single step reaction in which associa…
The present study was performed to analyse the structure of non-digested and digested collagen type I molecules by atomic force microscopy (AFM). Collagen type I molecules from the bovine skin were diluted with 0.05 N acetic acid, spread on a mica plate, air-dried and observed by non-contact mode AFM in air. Collagen…
Microstructural features of LASER welded duplex stainless steels have been studied from viewpoints of nitrogen distribution and its effects on pitting corrosion resistance. The experiment was conducted by means of 25 kW CO2 LASER welding process without filler metals.Nitrogen supersaturation in ferrite phase due to ra…
Three different unsaturated polyester resins were modified by toluene diisocyanate (TDI). All the resins studied were commercially available. One, 2, and 3% additions of TDI caused important changes of the resins properties. With an increase of TDI concentration gelation times increased. Suppression of the exotherm pe…
Macroporous beads, poly(ethylene glycol dimethacrylate-co-acrylic acid) [poly(EGDMA-co-AAc)], and poly(ethylene glycol dimethacrylate-co-hydroxyethyl methacrylate) [poly(EGDMA-co-HEMA)] were prepared by the suspension polymerization technique in the presence of a porogen agent. Different experimental conditions such a…
Layers of CNx were grown on polished Si(100) wafers and cleaved NaCl(100) substrates by reactive sputtering of graphite in d.c. nitrogen plasma and also by d.c. or r.f. magnetron sputtering of graphite in N2. The deposited layers were studied in situ by XPS and ex situ by Fourier transform infrared spectroscopy (FTIR)…
Little is known about the contribution of allophane and imogolite to induration of soil horizons in the perudic tropics. In this study we observed, to a depth of 10 m, indurated sandy C horizons that contained isotropic translucent fine‐textured coatings in Holocene and Pleistocene alluvial andesitic deposits situated…
The composition and hard segment content of 13 commercial thermoplastic polyurethane elastomers (TPUs) were obtained using 1H-nuclear magnetic resonance (1H-NMR). The properties of the TPUs were studied using differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), dynamic mechanical thermal analy…
Abstract The skin‐core structure of injection‐molded plates of poly(ethylene terephthalate) (PET) has been investigated using Confocal Micro‐Raman Spectroscopy (CMRS) and Differential Scanning Calorimetry (DSC). CMRS has proved to be a useful tool for finding out about quantitative conformational changes in polymeric…
The morphology of an epitaxial layer defect has been studied in relation to the layer thickness and size/material type of a foreign particle on the starting substrate of a Si epitaxial wafer with (100) surface. As expected, the edge length of a square‐shaped stacking fault or a crystal disorder on the (100) epitaxial…