Materials Literature
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The design and operation of a new research furnace, optimized for small-angle neutron scattering experiments at a steady-state nuclear reactor with a cold source, are presented. The apparatus enables the study of thermal processing of materials, such as the sintering behavior in ceramics, through the measurement of th…
A precise hydrogen permeation experiment for beryllium was conducted at a temperature ranging from 735 to 1000 K under hydrogen gas pressure of 101 to 103 Pa. Diffusion coefficient and permeation coefficient were determined from the steady state penneation and time transient penneation independently. The steady state…
The mass and velocity distributions of neutral species, ejected from a laser-ablated 6H-SiC target, are measured by time-of-flight mass spectroscopy. The laser-generated plume is shown to consist of atomic silicon and carbon and small neutral clusters. Measured values of the mean kinetic energies of neutral Si and SiC…
Niobium oxide electrochromic thin films were prepared by reactive DC magnetron sputtering method. Electrochromic properties of prepared films strongly depended on the substrate temperature during sputtering. The sample with a substrate temperature of 500° C was well crystallized and showed excellent electrochromism. I…
Abstract Blends of poly(butylene terephthalate) (PBT) with three different thermotropic liquid crystalline polyesters (TLCPs) were prepared. The first TLCP (HBH‐6) consists of diad aromaticester type mesogenic units and the hexamethylene spacers along the main chain, and the second (TB‐S6) is a wholly aromatic polyest…
Abstract Investigation of the Raman spectra of the molten MgCl 2 ‐KCl system by the use of factor analysis indicates that the melt is a two‐component system involving equilibrium between MgCl and Mg 2 Cl . The pure Raman spectra corresponding to these two species are recovered from the broad features via a self‐modeli…
The measurements of linear expansion and remanent polarization have been performed for polycrystalline samples of Ba(Ti1−x ,Sn x )O3, (BTS-x. x = O, 0.05. 0.10, 0.20). The results obtained from the dilatometric investigations confirm the existence of the dipolar polarization Pd below 620 K, which has been previously o…
Abstract The uniformity of films and their surface roughness are of great importance in applications involving information recording (videotapes etc.). These properties of polymers processed with such film production techniques as tenter frame operations are not well understood. To understand the relationships between…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Heterocyclic Polymer with Thermally Stable Second-Order Optical NonlinearityZhiyong Liang, Larry R. Dalton, Sean M. Garner, Srinath Kalluri, Antao Chen, and William H. SteierCite this: Chem. Mater. 1995, 7, 10, 1756–1758Publication Date (Print):October 1, 1995Publication H…
Abstract The thermal degradation of the first six members of poly(mono‐n‐alkyl itaconates) by thermogravimetry (TG), differential scanning calorimetry (DSC), Fourier Transform infrared (FTIR) and FTIR evolved gas analysis (FTIR‐EGA) was studied. The degradation mechanism involves cyclic anhydride formation followed by…
Anions can be adsorbed to soil colloids by specific (inner-sphere complexation) and nonspecific adsorption (outer-sphere complexation and diffuse ion association). The mechanism for anion adsorption determines whether and by what reaction anions in soil solution will enhance metal adsorption. The objectives of this st…
A review of plasma treatments of textiles is presented. The utility of plasma technology in processing textiles and the corresponding changes brought about in textile properties are discussed. The initiative, funded by the National Tex tile Center, and its progress to date is presented. This program features the use o…
Platelet concentrates (PCs), stored for 5 days in PL 2209, a new polyvinyl chloride (PVC) storage container plasticised with butyryl trihexyl citrate, were compared with those stored in PL 1240, a PVC platelet container plasticised with triethylhexyl trimellitate. In part 1 of the study, pooled platelet-rich plasma (P…
Analogy is one of the most powerful tools a physicist has to arrive at an understanding of the mysteries of nature. It allows us to make predictions about the properties of new systems from what we know about analogous well understood systems. One of the most striking analogies in physics is that introduced by de Genn…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of the Axial Correlation Lengths and Paracrystalline Distortion for Aromatic Copolyimides of Random Monomer SequenceTzong-Ming Wu, John Blackwell, and Sergei N. ChvalunCite this: Macromolecules 1995, 28, 22, 7349–7354Publication Date (Print):October 1, 1995Publ…
A new method to investigate in-situ catalytic reactions on single-crystal surfaces is introduced. The real-time technique of measuring the adsorbate-induced surface stress has been applied to the oxidation reaction of CO on Pt (111). The adsorption of each of the reactants, CO and oxygen, on Pt (111) induces a compres…
Other| October 01, 1995 H2O and OH in echinoid calcite: A spectroscopic study Susan J. Gaffey Susan J. Gaffey Rensselaer Polytechnic Institute, Department of Earth and Environmental Sciences, Troy, NY, United States Search for other works by this author on: GSW Google Scholar Author and Article Information Susan J. Ga…
Abstract Hydrothermal alteration has caused illitization along a 40m vertical profile in the Tsantilis bentonite deposit, Eastern Milos, Greece which consists principally of a Wyoming-type montmorillonite and authigenic K-feldspar. The product K-bentonite which contains illite/smectite, kaolinite, K-feldspar, quartz,…
Results presented in this paper demonstrate the roles of the most important parameters that govern abrasive wear of experimental ceramics. SEM studies of the abraded surfaces evidenced two main kinds of failures: microdropping of grain(s) and powder‐type wear track(s) resulting from the brittle microfracturing of part…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution Chemistry and Crystal Structure of Nickel Tetrakis(2,3,5,6-tetrafluoro-N,N,N-trimethyl-4-aniliniumyl)porphyrin Trifluoromethanesulfonate (NiTF4TMAP(CF3SO3)4)Timothy La, Rosalie A. Richards, Roy S. Lu, Robert Bau, and Gordon M. MiskellyCite this: Inorg. Chem. 1995, 3…