Advanced Engineering Materials

Cover image for Vol. 15 Issue 1‐2

February 2013

Volume 15, Issue 1-2

Pages 1–69

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
    1. You have free access to this content
      Front Cover Advanced Engineering Materials 1-2/2013 (page 1)

      Geoffrey A. Ozin

      Article first published online: 8 FEB 2013 | DOI: 10.1002/adem.201370001

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      These days nanotechnology start-ups are emerging with increasing frequency in almost every country around the globe, indicating that attitudes towards entrepreneurship are undergoing a significant change. Innovation in nanotechnology often springs from ideas birthed in universities yet the mindset of stakeholders towards entrepreneurship in our seats of knowledge is vastly underappreciated. In this article the challenges faced by academics and students are explored when confronted with the collision between fundamental research in the pursuit of knowledge and applied research directed at the creation of inventions, intellectual property, companies, jobs, products and wealth. For details see the article by Ozin et al. on page 8.

  2. Back Cover

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    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
    1. Back Cover Advanced Engineering Materials 1-2/2013 (page 70)

      Marc Davidson, Scott Roberts, Gerhard Castro, Robert Peter Dillon, Allison Kunz, Henry Kozachkov, Marios D. Demetriou, William L. Johnson, Steve Nutt and Douglas C. Hofmann

      Article first published online: 8 FEB 2013 | DOI: 10.1002/adem.201370004

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      Long-exposure image of a hypervelocity impact between an aluminum projectile traveling at 3 km/s and a three-layer bulk metallic glass composite foam. Owing to their unique combination of high hardness, low density, and low melting temperatures, metallic glasses appear to be optimal materials for orbital debris shields for spacecraft and satellites in low-earth-orbit. In this article, Davidson et. al. perform the first evaluation of these non-crystalline materials under hypervelocity impacts. Further details can be found by D. C. Hofmann et al. on page 27.

  3. Masthead

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
    1. Adv. Eng. Mater. 1-2/2012 (page 2)

      Article first published online: 8 FEB 2013 | DOI: 10.1002/adem.201370002

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
    1. Adv. Eng. Mater. 1-2/2012 (pages 3–5)

      Article first published online: 8 FEB 2013 | DOI: 10.1002/adem.201370003

  5. Editorial

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
  6. Essay

    1. Top of page
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    4. Masthead
    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
    1. Spin of a Nanotech Spin-Off (pages 8–18)

      Geoffrey A. Ozin

      Article first published online: 27 DEC 2012 | DOI: 10.1002/adem.201200356

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      Innovation in nanotechnology often springs from ideas birthed in universities yet the attitudes of stakeholders towards entrepreneurship in our seats of knowledge is underappreciated. In this article I explore the challenges faced by academics and students when confronted with the collision between fundamental research in the pursuit of knowledge and applied research directed at the creation of inventions, intellectual property, companies, jobs, products, and wealth.

  7. Research Article

    1. Top of page
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    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
    1. Oxidation Kinetics and Its Impact on the Strength of Carbon Short Fiber Reinforced C/SiC Ceramics (pages 19–26)

      Yuan Shi, Kamen Tushtev, Jan-Marcel Hausherr, Dietmar Koch and Kurosch Rezwan

      Article first published online: 24 SEP 2012 | DOI: 10.1002/adem.201200130

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      In this work oxidation resistance and mechanical performance of short fiber reinforced C/SiC are evaluated dependent on both, fiber length and fiber orientation. The fiber distribution is determined by image analysis using micro-computed tomography and correlated with oxidation behavior and bending strength. The results indicate a strong dependency of fiber orientation, oxidation kinetics, and mechanical performance.

  8. Communications

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Editorial
    7. Essay
    8. Research Article
    9. Communications
    1. Investigating Amorphous Metal Composite Architectures as Spacecraft Shielding (pages 27–33)

      Marc Davidson, Scott Roberts, Gerhard Castro, Robert Peter Dillon, Allison Kunz, Henry Kozachkov, Marios D. Demetriou, William L. Johnson, Steve Nutt and Douglas C. Hofmann

      Article first published online: 11 DEC 2012 | DOI: 10.1002/adem.201200313

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      A long exposure showing the impact of a small aluminum sphere traveling at over 3 km s−1 impacting a three layer panel of a bulk metallic glass cellular structure. The combination of high hardness, low density, low-melting temperature, and processing potential similar to plastics makes metallic glass structures ideal for orbital debris shielding on future spacecraft and satellites.

    2. Controlling Interconnected Silver Network Structure in Sol–Gel Nanocomposite Via Shrinkage-Induced Stress (pages 34–39)

      Chi-Kai Chiu, Tsan-Yao Chen and Tzy-Jiun M. Luo

      Article first published online: 27 AUG 2012 | DOI: 10.1002/adem.201200131

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      A stepwise procedure for producing interconnected silver network within a nanocomposite sample includes aging, drying, and annealing. The density of silver network is controlled by the drying process. Formation of silver network begins with microcracks formation, followed by metallization and propagation. The resulting silver phase is able to visualize defect structures and reinforce the nanocomposite.

    3. Generating Validated 3D Models of Microporous Ceramics (pages 40–45)

      Kilian Schmidt and Jürgen Becker

      Article first published online: 19 SEP 2012 | DOI: 10.1002/adem.201200097

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      By the example of microporous cordierite ceramics, a method of generating 3D models of complex random heterogeneous pore structures is presented. The generated models are validated by comparing computed material properties to measurements which have been conducted with a series of samples of cordierite ceramic variants with various pore structures.

    4. Reactive Filters for Steel Melt Filtration (pages 46–59)

      Christos G. Aneziris, Steffen Dudczig, Marcus Emmel, Harry Berek, Gert Schmidt and Jana Hubalkova

      Article first published online: 19 SEP 2012 | DOI: 10.1002/adem.201200199

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      New carbon bonded Al2O3 filters with MgO–C “reactive coatings” for high filtration efficiency of steel melts are studied with the aid of a steel casting simulator in full controlled atmosphere. Due to the in situ reduction of MgO in the coating and the formation of Mg vapor a reaction with the oxygen dissolved in the steel melt is triggered and leads to the formation of secondary MgO on the surface.

    5. Wollastonite Foams From an Extruded Preceramic Polymer Mixed with CaCO3 Microparticles Assisted by Supercritical Carbon Dioxide (pages 60–65)

      Enrico Bernardo, Giulio Parcianello, Paolo Colombo and Siobhan Matthews

      Article first published online: 19 SEP 2012 | DOI: 10.1002/adem.201200202

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      CO2-assisted extrusion provides a homogeneous mixing between a silicone resin and CaCO3 microsized filler. Direct ceramization of extrudates, although effective in yielding phase pure wollastonite and a well distributed microporosity, cannot be considered a final shaping technique, due to the formation of macrodefects. Silicone/CaCO3 extrudates may be used, after grinding, as raw materials for the fabrication of wollastonite foams, with or without addition of sacrifical PMMA templates. In this case, a low temperature thermal treatment (300 °C) optimizes the release of carbon dioxide, with development of interconnected macropores, along with micropores, maintained after ceramization at 900 °C.

    6. Micropatterned Freestanding Superelastic TiNi Films (pages 66–69)

      Rodrigo Lima de Miranda, Christiane Zamponi and Eckhard Quandt

      Article first published online: 12 OCT 2012 | DOI: 10.1002/adem.201200197

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      This study presents a method to fabricate freestanding TiNi films with a minimum feature size 5 µm based on UV lithography, sacrificial layer and wet etching technology. This method was successfully applied to the fabrication of TiNi films with 50 µm thickness and 25 µm feature size. These superelastic films showed remarkable tensile strengths up to 1100 MPa and elongations upon fracture of more than 40%.

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