Materials Literature
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Thermoplastic Vulcanizate (TPV) is a special class of Thermoplastic Elastomers (TPEs) made of a rubber/plastic polymer mixture in which the rubber phase is highly vulcanized. It is prepared by melt mixing a thermoplastic with an elastomer and by in-situ crosslinking of the rubber phase. Currently, TPV is replacing EPD…
A polyimide coated substrate is treated so that vertical liquid crystal alignment (theta=0) obtains over the temperature range T(NA)< T < T(a), where T(NA) is the nematic-smectic-A transition temperature. When the cell is filled with a chiral liquid crystal whose helical pitch is unwound (surface stabilized), applicat…
<div class="htmlview paragraph">A specific objective of the European Mg-Engine project is to qualify at least two die cast Mg alloys with improved high temperature properties, in addition to satisfactory corrosion resistance, castability and costs. This paper discusses the selection criteria for high temperature…
This paper describes some of the recent developments that have been made by ArvinMeritor and Stelco Inc. to address the need for lighter weight suspension components by North American vehicle manufacturers. The move towards lighter weight suspension components is being driven primarily by the mandate to reduce the ove…
Carbon nanotubes are the basic element of modern nanoelectronic devices. One of the most promising their applications is a carbon nanotube based conducting channel in field-effect transistor with SiO<sub>2</sub> dielectric deposited on the nanotube. Simulation of SiO<sub>x</sub> on CNT technology and some properties o…
<div class="htmlview paragraph">Lead is well recognized as having environmental and health risks. The elimination of lead from automotive components has been accelerated by the European End of Life Directive as well as litigation concerns in the U.S. In response to these circumstances, two new lead-free bronze m…
<div class="htmlview paragraph">New doped zirconia with high thermal stability and high sulfur resistance have been developed for Diesel Oxidation Catalysts (DOC). The present work is focused on rare earths-doped zirconia and base metal-doped zirconia which are preferred carriers of precious metals to improve ca…
Magnesia–graphite refractories are currently essential for the iron and steel industry. As a result, their physico‐chemical characterization is crucial with a view to predicting their service life. In this work, a methodology for the complete analytical characterization of such materials has been developed. Magnesia–g…
Donor-acceptor (D-A) pair spectra have been observed in the photoluminescence radiative recombination of selected donor bound exciton complexes in zinc oxide (ZnO) single crystals that have been ion implantation doped with H and Zn atoms and subsequently annealed in a nitrogen (N2) atmosphere at temperatures in the ra…
<div class="htmlview paragraph">The body-in-white (BIW) - the backbone of a vehicle - has to fulfill many functional requirements. Among these requirements are passive safety, service life, stiffness and acoustics. Besides increased BIW functionality, the relentless demand for fuel efficiency and improved drivin…
<div class="htmlview paragraph">The development of diesel powered passenger cars is driven by the enhanced emission legislation. To fulfill the future emission limits there is a need for advanced aftertreatment devices. A comprehensive study was carried out focusing on the improvement of the DOC as one part of t…
<div class="htmlview paragraph">Automotive catalysts close coupled to gasoline engines operated under high load are frequently subjected to bed temperatures well above 950 °C. Upon deceleration engine fuel cut is usually applied for the sake of fuel economy, robustness and driveability. Even though catalyst inle…
Bacteriorhodopsin (BR), which is rich in alpha-helical structure, was spread onto water with single-wall carbon nanotubes (SCNTs). After a Langmuir trough was used to apply compressive surface pressure to maintain the alpha-helices monolayer of denatured BR, the composite films comprising alpha-helices and SCNTs were…
<div class="htmlview paragraph">This paper aims at discussing the crash performances improvements achieved by the used of Very and Ultra High Strength Steels based Tailored Welded Blanks. Particularly we analyze three parts that participate actively in vehicle crashworthiness: the front rail member, the B-pillar…
<div class="htmlview paragraph">In conventional gasoline engine vehicles, three-way catalysts are used to simultaneously remove HC, CO and NOx from the exhaust gas. The effectiveness of the catalyst to remove these harmful species depends strongly on the oxygen concentration in the exhaust gas. Deterioration of…
We calculate and experimentally detect the laser melting threshold in nanocrystalline Si/amorphous SiO2 superlattices. Using laser energy density slightly above the melting threshold, we observe two types of laser-induced structural modifications: (i) disappearance of nanocrystalline Si phase in the samples with thin…
A magnetoelectric (ME) laminate composite was fabricated by sandwiching one 0.7Pb(Mg1∕3Nb2∕3)O3–0.3PbTiO3 (PMN-PT) piezoelectric single crystal layer between two NdFeB magnet layers along the thickness direction. The high ME effect was obtained by the product of the magnetic attractive-repellent effect in the magnet l…
The replica method is used to calculate the interface free energy associated with the change from periodic to antiperiodic boundary conditions in finite-dimensional p-spin glass models in the phase which at mean-field level has one-step replica symmetry breaking (1RSB). In any finite dimension the interface free energ…
<div class="htmlview paragraph">This work considers the performance of a NO<sub>x</sub> control system on a diesel engine and the interaction between the NO<sub>x</sub> and particulate control devices. A commercial urea-selective catalytic reduction (SCR) catalyst (twin catalytic reactors…
<div class="htmlview paragraph">Modeling of diesel exhaust after-treatment devices is a valuable tool in the development and performance evaluation of these devices in a cost effective manner. Results from steady state loading experiments on a catalyzed particulate filter (CPF) in a Johnson Matthey CCRT®, perfor…