Advanced Engineering Materials

Cover image for Vol. 15 Issue 10

October 2013

Volume 15, Issue 10

Pages 877–1018

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    6. Communications
    1. You have free access to this content
      Front Cover: Advanced Engineering Materials 10∕2013 (page 877)

      Article first published online: 4 OCT 2013 | DOI: 10.1002/adem.201370027

      Thumbnail image of graphical abstract

      The Cover represents hierarchical texture of biosourced porous silicon carbide synthesized by Simona Ungureanu et. al. on page 893. Final biosourced SiC∕C macrocellular foams are bearing unprecedentedly high heat conductivity (18 W.m-1.K-1) which was attributed to radiative heat transfer and to the presence of partially graphitized carbon.

  2. Masthead

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    6. Communications
    1. You have free access to this content
      Adv. Eng. Mater. 10∕2013 (page 878)

      Article first published online: 4 OCT 2013 | DOI: 10.1002/adem.201370028

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    6. Communications
    1. You have free access to this content
      Adv. Eng. Mater. 10∕2013 (pages 879–884)

      Article first published online: 4 OCT 2013 | DOI: 10.1002/adem.201370029

  4. Full Papers

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    6. Communications
    1. Interaction of Discharges in Heptane with Silicon Covered by a Carpet of Carbon Nanotubes (pages 885–892)

      Ahmad Hamdan, Jean-Nicolas Audinot, Sylvie Migot-Choux, Cédric Noel, Francis Kosior, Gérard Henrion and Thierry Belmonte

      Article first published online: 25 JUN 2013 | DOI: 10.1002/adem.201300106

      Thumbnail image of graphical abstract

      Carbon nanotubes grown on a silicon wafer modify the current flow in a micro-discharge created in heptane with a pin-to-plate configuration. The interaction of the plasma with the surface is affected by the presence of the nanotubes which behave as electrical conductors that focalize the current on a smaller area.

    2. First Biosourced Monolithic Macroporous SiC/C Composite Foams (Bio-SiC/C(HIPE)) Bearing Unprecedented Heat Transport Properties (pages 893–902)

      Simona Ungureanu, Gilles Sigaud, Gérard L. Vignoles, Christophe Lorrette, Marc Birot, Hervé Deleuze and Rénal Backov

      Article first published online: 23 JUL 2013 | DOI: 10.1002/adem.201300015

      Thumbnail image of graphical abstract

      Carbothermal reduction of biosourced precursors combining sodium silicate by lignin at 1400 °C allows the emulsion-based generation of macrocellular Bio-SIC/C(HIPE) composite foams bearing unprecedented heat transport properties. These unprecedented heat transport performances are attributed to cooperative effect between radiative heat transfer and the presence of partially graphitized carbon.

  5. Communications

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    6. Communications
    1. Inkjet Printing of Quantum Dots in Photopolymer for Use in Additive Manufacturing of Nanocomposites (pages 903–907)

      Amelia M. Elliott, Olga S. Ivanova, Christopher B. Williams and Thomas A. Campbell

      Article first published online: 22 MAY 2013 | DOI: 10.1002/adem.201300020

      Thumbnail image of graphical abstract

      Quantum dots (QD) are added to photopolymer inkjet media toward the additive manufacturing of geometrically complex artifacts with unique optical properties. The effects on the rheology and the inkjet printing of the QD on the media are investigated. The figure shows the QD fluorescing within the droplets of the nanocomposites, which were deposited via inkjet printing.

    2. Simulation of Mechanical Properties of Bio-Inspired TiO2/PE Nanocomposites (pages 908–920)

      Galina Lasko, Zaklina Burghard, Joachim Bill, Immanuel Schäfer, Ulrich Weber and Siegfried Schmauder

      Article first published online: 26 APR 2013 | DOI: 10.1002/adem.201200386

      Thumbnail image of graphical abstract

      The extraordinary combination of strength and toughness attained by nature's highly sophisticated structural design in nacre has inspired the synthesis of novel layered nanomaterials. The object of the present paper is a nanostructured layered TiO2/PE-composite, mimicking the nacre's structure. In the present work, the influence of the thickness ratio between organic and inorganic phases and the influence of mineral bridges on the Young's modulus of the composites is analyzed analytically and numerically. By application of these findings in a modeling approach, the mechanical properties of artificially produced materials can be predicted.

    3. Wrinkling of Interfacial Layers in Stratified Composites (pages 921–926)

      Yaning Li, Narges Kaynia, Stephan Rudykh and Mary C. Boyce

      Article first published online: 2 MAY 2013 | DOI: 10.1002/adem.201200387

      Thumbnail image of graphical abstract

      Wrinkling vs. long-wavelength instability envelope for multi-layered soft composite: Predictive analytical and finite element models are presented to reveal the instability mechanics governing reversible wrinkling of interfacial layers. The biomimetic guidelines for the design of reversible, tunable, and multi-functional layered soft composites with transforming interfacial layers are developed and verified via 3D printed prototypes.

    4. Preparation and Investigation of Structural Parameters of Single Crystals of Low-Alloyed Alloys on the Base of Tungsten and Molybdenum (pages 927–934)

      Katerina Skotnicova, Valentina Mikhailovna Kirillova, Jaromir Drapala, Gennadij Sergeevich Burkhanov, Vladimir Alekseevch Kuz'mishev, Vladislav Vladimirovich Sdobyrev, Vladimir Arkadievich Dementyev and Nikolai Nikiolaievich Abramov

      Article first published online: 26 APR 2013 | DOI: 10.1002/adem.201300003

      Thumbnail image of graphical abstract

      Lower structural perfection of W-Ta single crystals is associated with considerable disturbance of the melt by plasma arc, great temperature gradients and cooling rate of the growing single crystal due to “air rinsing” of its surface by plasma-forming gas. In the peripheral areas of this sample a large number of small sub-grains is presented, which confirms the trend towards fragmentation of the structure at crystallization from the beginning to the end of the ingot.

    5. The Undoped CVD Diamond Electrode: The Effect of Surface Pretreatment on its Electrochemical Properties (pages 935–940)

      Kazimierz Fabisiak, Magdalena Kowalska, Mirosław Szybowicz, Kazimierz Paprocki, Pawel Popielarski, Andrzej Wrzyszczyński, Lidia Mosińska and Galiya Kaidarovna Zhusupkalieva

      Article first published online: 17 MAY 2013 | DOI: 10.1002/adem.201200351

      Thumbnail image of graphical abstract

      CVD diamond electrodes have been extensively studied in recent years, from the point of view of fundamental electrochemical properties as well as that of applications. Diamond electrodes are found to be attractive for electrochemical applications due to their physical, chemical, and electronic properties, e.g. high thermal conductivity; high hardness, and chemical inertness; a wide electrochemical potential window in aqueous and non-aqueous media; a very low capacitance and a very high electrochemical stability.

    6. Light Management of Aluminum Doped Zinc Oxide Thin Films by Fabricating Periodic Surface Textures Using Direct Laser Interference Patterning (pages 941–947)

      Sebastian Eckhardt, Teja Roch, Christoph Sachse and Andrés Fabián Lasagni

      Article first published online: 21 MAY 2013 | DOI: 10.1002/adem.201300007

      Thumbnail image of graphical abstract

      Large area micro and sub-micrometer structuring of TCO thin film layers is performed using a laser based one-step procedure. The fabricated hexagonal arranged surface patterns with 800 nm spatial period show a higher performance in both transparency and diffraction properties compared to line-like textured and non-patterned substrates. Furthermore, non-significant variations of the electrical resistance are observed after the laser treatment.

    7. Generating Lithographically-Defined Tunable Printed Structural Color (pages 948–953)

      Benjamin Michaelis, David R. E. Snoswell, Nicholas A. W. Bell, Peter Spahn, Goetz P. Hellmann, Chris E. Finlayson and Jeremy J. Baumberg

      Article first published online: 22 MAY 2013 | DOI: 10.1002/adem.201300089

      Thumbnail image of graphical abstract

      A tunable method for generating non-fading printed structural color is demonstrated. The process involves the rapid generation and self-assembly of particle strings, using standard colloidal polymeric particles and AC electric fields, with no requirement for a “wash-out” step. By using an organic UV-curable medium, we demonstrate that these tunable structures can be permanently fixed in a flexible polymer matrix and thus are suitable for printing applications.

    8. Flexible Electroactive Nanomaterials Biotemplated with Versatile M13 Phage Platforms (pages 954–961)

      Liliana Irais Vera-Robles, Guy Van Tran Nhieu, Christel Laberty-Robert, Jacques Livage and Clement Sanchez

      Article first published online: 22 MAY 2013 | DOI: 10.1002/adem.201300006

      Thumbnail image of graphical abstract

      Producing electrodes for methanol oxidation using M13 phage as a new support are designed. This electrode shows electroactivity because the M13 phage can direct the size of the metal nanoparticles (NPs) allowing it a good dispersion, building a 3D network. This nanoarchitecture reduces poisoning on the surface of the NPs keeping the electroactivity

    9. New Shedding Motion, Based on Electroactuation Force, for Micro- and Nanoweaving (pages 962–965)

      Hong Xia and Toshihiro Hirai

      Article first published online: 16 MAY 2013 | DOI: 10.1002/adem.201300090

      Thumbnail image of graphical abstract

      A novel micro- and nanoweaving method based on the electroactuation properties of microfibers is developed. Poly(vinyl alcohol) microfibers are bent using electrical stimuli, with high electrosensitivity. The generated actuation force guide the fiber (monofilament) up or down by more than 5 mm, to provide a shedding motion for weaving ultrathin, uniform micro- or nanofabrics.

    10. From Eutectic Clusters to Bulk Metallic Glasses of Zr–Al–Cu System (pages 966–969)

      Jixiang Chen and Shuoyao Zhou

      Article first published online: 11 JUN 2013 | DOI: 10.1002/adem.201200389

      Thumbnail image of graphical abstract

      CuZr2 (MoSi2 type) phase structure is analyzed using clusters centered by two non-equivalent atomic sites: small sphere Cu and large sphere Zr. It is shown that the clusters are all shared atoms in different ways with their neighboring clusters, so after sharing effective cluster should be put out to describe the alloy phase.

    11. Plasma Nitriding of Spray-Formed Aluminum Alloys (pages 970–975)

      Anja Buchwalder, Anke Dalke, Heinz-Joachim Spies and Rolf Zenker

      Article first published online: 14 MAY 2013 | DOI: 10.1002/adem.201200257

      Thumbnail image of graphical abstract

      Despite their high silicon content up to 17–25 ma% spray-formed Al alloys are well nitridable. The present paper deals with the influence of the chemical composition, initial surface roughness and the nitriding parameters on the nitriding behavior, especially the surface coverage with aluminum nitride. Furthermore, the hardness and wear behavior are investigated both after the single plasma nitriding treatment as well as an additional subsequent heat treatment (age hardening).

    12. Benefits of Recovery and Partial Recrystallization of Nano-Twinned Austenitic Steels (pages 976–979)

      Olivier Bouaziz and David Barbier

      Article first published online: 20 JUN 2013 | DOI: 10.1002/adem.201300045

      Thumbnail image of graphical abstract

      Grain refinement is efficient for developing single phase steel with high yield stress but with a detrimental effect on the strain hardening. To overcome this limitation, the exploitation of the thermal stability of mechanical twins in austenitic steels, combined to recovery or partial recrystallization treatments, are reviewed. Both strategies exhibit benefits for the strength/elongation balance, but recovery gives the best properties in austenitic steel.

    13. The Preparation of Auxetic Foams by Three-Dimensional Printing and Their Characteristics (pages 980–985)

      Richard Critchley, Ilaria Corni, Julian A. Wharton, Frank C. Walsh, Robert J. K. Wood and Keith R. Stokes

      Article first published online: 28 MAY 2013 | DOI: 10.1002/adem.201300030

      Thumbnail image of graphical abstract

      Repeatable auxetic foams are produced using three-dimensional printing technologies. This methodology is applied here for the first time to produce playable polymeric auxetic foams with an idealized re-entrant cellular structure. During uniaxial tensile stress, the foams show negative Poisson's ratios as low as −1.18. The experimental Poisson's ratios of the auxetic foams are compared against the data predicted by a three-dimensional mathematical model.

    14. Deposition of Ingested Volcanic Ash on Surfaces in the Turbine of a Small Jet Engine (pages 986–994)

      Maya Shinozaki, Kevin A. Roberts, Bennie van de Goor and T. William Clyne

      Article first published online: 25 JUN 2013 | DOI: 10.1002/adem.201200357

      Thumbnail image of graphical abstract

      The deposition characteristics of ingested volcanic ash were studied using a small aeroengine. Deposition was assessed using a borescope. Deposition mainly occurred on the nozzle guide vane (see Figure). A numerical model has been used to predict particle acceleration and heating. It is observed that larger particles are more likely to adhere. Larger particles are predicted to be sufficiently hot and are more likely to hit surfaces. Estimated values of Stokes numbers are consistent with the observations.

    15. Comparison of Fast Roll-to-Roll Flexographic, Inkjet, Flatbed, and Rotary Screen Printing of Metal Back Electrodes for Polymer Solar Cells (pages 995–1001)

      Markus Hösel, Roar R. Søndergaard, Dechan Angmo and Frederik C. Krebs

      Article first published online: 20 JUN 2013 | DOI: 10.1002/adem.201300011

      Thumbnail image of graphical abstract

      A comparison of the most promising silver back electrode manufacturing processes for polymer solar cells is presented. All printing methods are fully roll-to-roll (R2R) processed under ambient conditions with the same solar cell layer stack for better evaluation. This work delivers process recommendations and highlights challenges for each printing method to achieve good performing polymer solar cell modules and highly efficient device manufacturing.

    16. Pre-Corrosion and Surface Treatments Effects on the Fatigue Life of AA6082 T6 (pages 1002–1006)

      Mustafa Abdulstaar, Mansour Mhaede and Lothar Wagner

      Article first published online: 20 JUN 2013 | DOI: 10.1002/adem.201300054

      Thumbnail image of graphical abstract

      Applying of surface treatments as shot peening and ball burnishing had markedly enhanced the fatigue life of AA6082 T6. Both surface treatments resulted in a surface strengthen and induced compressive residual stresses in the near surface regions. Pre-corrosion in 3.5% NaCl solution resulted in numerous surface pits that led to degradation of fatigue life of the reference electrolytically polished conditions. These detrimental effects on fatigue life could be entirely eliminated by applying surface treatments either before or after pre-corrosion.

    17. A Comparison of Hydrogen Sintering and Phase Transformation (HSPT) Processing with Vacuum Sintering of CP-Ti (pages 1007–1013)

      Pei Sun, Zhigang Zak Fang and Mark Koopman

      Article first published online: 20 JUN 2013 | DOI: 10.1002/adem.201300017

      Thumbnail image of graphical abstract

      The process of hydrogen sintering and phase transformation (HSPT) has previously been shown to produce Ti–6Al–4V with excellent mechanical properties. In the present work, titanium hydride powders are used to produce commercially pure Ti by both vacuum sintering and HSPT. Within the parameters of heat treatments applied, the HSPT samples exhibite finer microstructures, and show a 14% improvement in tensile strength and a 20% improvement in ductility compared to vacuum sintered samples.

    18. Dense YSZ Laminates Obtained by Aqueous Tape Casting and Calendering (pages 1014–1018)

      Veronica Moreno, Dachamir Hotza, Peter Greil and Nahum Travitzky

      Article first published online: 20 JUN 2013 | DOI: 10.1002/adem.201200362

      Thumbnail image of graphical abstract

      Dense electrolytes and flawless laminated YSZ electrolytes can be produce combining aqueous tape casting and constrained calendering. During calendering two or more layers are laminated continuously and the edges (entering and final) are not sealed at the same time avoiding air bubbles to trap between the layers. In this study constrained calendering laminates showed adequate adhesion between layers, and almost 20% thickness reduction after sintering as well as high green and sintered densities.

SEARCH

SEARCH BY CITATION