Materials Literature
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Certain substances like wax, when incorporated into rubber vulcanisates during mixing prior to vulcanisation are able to bloom and form a surface layer with significant importance in appearance and in protection against ozone. In tyres, this is particularly important in sidewall compounds as ozone protection reflects…
This paper presents two hybrid Newton-polarization methods for transient magnetoquasistatic field simulation, including hysteretic ferromagnetic materials, in conjunction with the finite integration implicit time-domain formulation. The hybrid techniques are based on the combination of the polarization method and the…
Nanosize clusters of titania were dispersed in mesoporous MCM-41 silica matrix with the help of the incipient wet-impregnation route, using an isopropanol solution of titanium isopropoxide as precursor. The clusters thus formed were of pure anatase phase and their size depended upon the titania loading. In the case of…
This is a series of columns that addresses various topics within the realm of polymer degradation and stabilization. Topics that could be covered in one of these columns include those dealing with thermal degradation and fire retardancy, photodegradation and stabilization, or bio-degradation. Because my principal area…
Abstract By the use of aniline and the sterically hindered aromatic primary amines, 2,6‐Me 2 C 6 H 3 NH 2 and 2,6‐ i Pr 2 C 6 H 3 NH 2 , N ‐bonded monochlorosilanes, ArN(SiMe 3 )SiMe 2 Cl [Ar = C 6 H 5 ( 1a ), Ar = 2,6‐Me 2 C 6 H 3 ( 1b ) and Ar = 2,6‐ i Pr 2 C 6 H 3 ( 1c )] have been prepared by a sequential deproton…
A carbon film grown at room temperature using a cathodic arc process in ambient gases such as N 2 and He was investigated by Raman spectroscopy and scanning electron microscopy (SEM). Diamond particles were found to be formed at a constant total pressure of 10 -2 Pa, while graphite-like carbon was grown at a lower pre…
The isochoric thermal conductivity of solid nitrogen is investigated on four samples of different densities in the temperature interval from 20 K to the onset of melting. In α-N2 the isochoric thermal conductivity exhibits a dependence weaker than Λ∝1/T; in β-N2 it increases slightly with temperature. The experimental…
Abstract In order to simplify the array manufacturing process of FFS TFT‐LCD, novel four‐mask process which is adopted to the optimum multiple‐slit design in the common electrode and contact hole has been developed. The adoption of the optimum multiple‐slit design is able to support stable process margin without rippl…
The effect of the volume fraction of eutectic carbides on the thermal fatigue resistance of multicomponent white cast iron has been investigated. Thermal fatigue tests were carried out for 100 and 500 cycles. Nucleation of thermal fatigue cracks took place mostly at the specimen surface, induced by mechanical and meta…
Single-phase samples of the Sn 2 - 2 x Sb x Fe x O 4 solid solution were prepared by solid-state reaction in air at 1300 °C for 0.26 ≤ x ≤ 0.66. The crystal structure of the Sn 2 - 2 x Sb x Fe x O 4 phases was studied by electron diffraction and X-ray powder diffraction. The compounds crystallize with the rutile type…
Power ultrasound was investigated as an environmentally benign technique for the mitigation of microbiologically influenced corrosion (MIC) in natural gas pipeline facilities. Bacterial kill tests were performed with simulated pipeline brine containing acid-producing bacteria, Enterobacter aerogenes. The effect of son…
Software tools for designing downhole scale inhibitor (SI) squeeze treatments are widely available and have been successfully applied in thousands of wells worldwide. Many SPE papers have been published describing such squeeze design case studies from the conceptual modelled design, to implementation and post treatmen…
Two α-substituted vanadium-oxo phthalocyanines, [( OC 6 H 3 (t- Bu ) 2 ) 4 Pc] VO and [( OC 8 H 17 ) 4 Pc] VO , where OC 6 H 3 (t- Bu ) 2 is 2,4-di-tert-butylphenoxy and OC 8 H 17 is 2,2,4-tri-methyl-3-pentoxy, were synthesized and characterized by elemental analysis, mass spectrometry, UV-visible, IR, ESR spectroscop…
We have studied the influence of γ radiation ( 60 Co source) on the photoelectric parameters of InSe diodes based on the direct optical contact p -InSe/ n -InSe. The penetrating radiation produces defects of the acceptor type in the base material, but does not lead to any significant degradation of the energy barrier.…
Abstract The fringe‐field switching (FFS) mode was known to exhibit wide‐viewing angle irrespective of the types of the LC. However, the LC with +Δ∍ reveals less transmittance than that of the cell with −Δε. This drawback can be overcome by optimized electrode width that increases the region of the horizontal field in…
Abstract The exposure tests followed by metallographic evaluation and the electrochemical reactivation measurements in double‐loop (DL‐EPR) modification were used for investigation of the influence of non‐boiling heat transfer on initiation and rate of propagation of intergranular corrosion (IGC) of sensitized austeni…
Comparing efficacy of scale inhibitors for inhibition of zinc sulfide and lead sulfide scales. Thomas Henry Lopez; Thomas Henry Lopez Baker Petrolite Corp. Search for other works by this author on: This Site Google Scholar Mingdong Yuan; Mingdong Yuan Baker Petrolite Corp. Search for other works by this author on: Thi…
Air-gapped iron-cores are widely used for power reactors. Eddy currents are induced in silicon steel sheets due to fringing flux, and this causes local overheating. In order to avoid local heating and to design reactors with high efficiency, the analysis and experiments for evaluating local losses in the core block of…
Abstract The antioxidative action of phosphonites and phosphites depends on their structure, the nature of the polymer to be stabilized and the aging conditions. Phosphorus compounds can act in different ways: as hydroperoxide decomposers (secondary antioxidants), as free‐radical scavengers (primary antioxidants), as…
Abstract Cholesteric liquid crystal micro‐capsules (CLC‐MCs) with a perpendicular alignment shell were investigated. The CLC‐MC cell showed high contrast ratio up to 17:1, reflectance over 30% and uncolored white appearance in bright state. A photo‐addressable electronic paper using the CLC‐MC and an organic photocond…