Materials Literature
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<div class="htmlview paragraph">Since its very beginning in 1953, Corvette has been a pioneer in light weight material applications. The new 6<sup>th</sup> generation corvette high performance Z06 model required aggressive weight savings to achieve its performance and fuel economy targets. In additio…
<div class="htmlview paragraph">In order to use modeling as a predictive tool for real-world particulate filter designs (segmented filters, non-axisymmetric designs), it is necessary to develop reliable 3-dimensional models. This paper presents a 3 d modeling approach, which is validated against engine-bench mea…
<div class="htmlview paragraph">Compositions in the mixed strontium/calcium feldspar ([Sr/Ca]O·Al<sub>2</sub>O<sub>3</sub>·2SiO<sub>2</sub>) - aluminum titanate (Al<sub>2</sub>O<sub>3</sub>·TiO<sub>2</sub>) system have been investigated as a…
<div class="htmlview paragraph">Vegetable oils blended to Diesel fuel are becoming popular. Economic, ecological and even political reasons are cited to decrease dependence on mineral oil and improve CO<sub>2</sub> balance. The chemical composition of these bio fuels is different from mineral fuel, h…
Abstract The course of chemical oxidative polymerization of aniline using ammonium persulfate as the initiator in acidic (1 M HCl) aqueous methanol (30 to 70 vol%) was studied spectrophotometrically. It was found that at temperatures greater than about 10 °C the reaction leads to degradation of polyaniline, the effect…
A preferentially oriented mordenite membrane was successfully prepared on a seeded porous a-alumina support. Characterization results of XRD (X-ray diffractometer) and FE-SEM (field emission scanning electron microscope) revealed that evolutionary selection might predominantly contribute to the formation of the sharpl…
Abstract A series of new alternating aromatic poly(ester‐imide)s were prepared by the polycondensation of the preformed imide ring‐containing diacids, 2,2′‐bis(4‐trimellitimidophenoxy)biphenyl (2a) and 2,2′‐bis(4‐trimellitimidophenoxy)‐1,1′‐binaphthyl (2b) with various aromatic dihydroxy compounds in the presence of p…
This work investigates the fracture behaviour of a multi-layered system typically used in solid oxide fuel cell applications, namely the lanthanum strontium manganite (LSM) and lanthanum strontium cobaltite oxide (LSCoO) films on a yttria stabilized zirconia (YSZ) substrate. The fracture is caused by excessive residua…
<div class="htmlview paragraph">A high-resolution corrosion probe was placed within the airhorn section of the exhaust gas recirculation (EGR) loop of a heavy-duty diesel engine. The corrosion rate of the mild-steel probe elements was evaluated as a function of fuel sulfur level, EGR fraction, dewpoint margin, a…
<div class="htmlview paragraph">Meeting EPA Tier 2 emission standards presents a great challenge to engine manufacturers. In addition to having an actively controlled aftertreatment system, engine-out NOx emission needs to be reduced significantly to achieve regulatory compliance. Using advanced combustion metho…
<div class="htmlview paragraph">The Structural Cast Magnesium Development Project is a jointly sponsored effort by the US Department of Energy (DOE) and the US Council for Automotive Research (USCAR) Automotive Metals Division (AMD) to identify and resolve technical and manufacturing issues that limit the light…
<div class="htmlview paragraph">The combustion efficiencies of diesel oxidation catalysts (DOC) targeted for use in the heat-up role of active diesel particulate filter (DPF) systems are investigated. Light-off tests using synthetic gases and fuel injection studies on light and heavy duty engines, both before an…
This paper describes the preparation and characterization of conducting polyaniline-montmorillonite (PANI-MMT) nanocomposites by the polymerization of anilinium ions within the interlayer space of MMT particles. A procedure for the successive introduction of PANI chains within the interlayer galleries of MMT is develo…
<div class="htmlview paragraph">Phosphorous in diesel exhaust is derived via engine oil consumption from the zinc dialkyldithiophosphate (ZDDP) oil additive used for engine wear control. Phosphorous present in the engine exhaust can react with an exhaust catalyst and cause loss of performance through masking or…
<div class="htmlview paragraph">Diesel Particulate Filters (DPFs) need to be periodically regenerated in order to achieve efficient and safe vehicle operation. Under typical diesel exhaust conditions, this invariably requires the raising of the exhaust gas temperature by active means, up to the point that partic…
Abstract The effects of dopant type, doping level, polyimide (PI) content and temperature on electrical conductivity response of polyaniline (PANI) and polyaniline/polyimide (PANI/PI) blends to CO–N 2 gas mixtures were systematically investigated. At the same doping level, HNO 3 ‐doped PANI has a greater electrical co…
<div class="htmlview paragraph">In Japan there is currently a strong social demand for exhaust emissions reduction from heavy-duty diesel engines. Therefore, new Long-Term Regulation will come into effect in October 2005, setting the NOx standard at 2.0 g/kWh and the PM standard at 0.027 g/kWh. At the same time,…
It has been recognized that the control of crystalline orientation and thickness of Pb(Zr0.52Ti0.48)O3 (PZT) thin-films is very critical in the fabrication of piezoelectric thin-film devices with desirable dielectric and electromechanical properties. Here, we present our recent studies on the fabrication of PZT films…
Self-assembled PbTiO3 nanoislands of three different shapes with orderly in-plane directions were fabricated on Pt∕SrTiO3 substrates by metalorganic chemical vapor deposition. The shapes of the nanoislands were triangular-shaped (width 50–110nm, height 20–30nm), triangular-prism-shaped (width 50–110nm, length 100–550n…
Color sense: A reversible phase transition occurs with a change in color and structural properties on exposure to water vapor of the 1D halogen-bridged dinuclear platinum compound [NH3(C4H8)NH3]2[Pt2(pop)4I]⋅4 H2O (pop=P2O5H22−; see microscope images in reflection mode). This transition takes place between a paramagne…