Advanced Engineering Materials Archives | The American Ceramic Society

Advanced Engineering Materials

Interlocking ceramic elements lead to quasi-plastic properties

By Martin Grolms / May 29, 2012

Display of self-interlocking elements from oxide ceramics. Assemblies of such elements possess an increased bending compliance compared to bulk plates. Cracks are confined to a few elements, so that most of the elements stay intact and are reusable. Credit: T. Krause et al.; Adv. Eng. Mater. For many high-temperature applications, ceramics are indispensable. No other…

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Reactive fillers to produce wollastonite bioceramics

By Martin Grolms / May 3, 2012

Examples of 3D wollastonite-based scaffold from preceramic polymers with reactive fillers. This sample from is from fused deposition, after ceramization. Credit: E. Bernardo et. al.; Adv. Eng. Mater. The main problem with the production of preceramic polymers is the formation of cracks and pores upon heat treatment. It is associated with the gas release and shrinkage occurring…

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Composite materials: Reinforcing metal with ceramics

By Martin Grolms / March 8, 2012

Sample metal–ceramic composite honeycomb macrostructures. Credit: C. Weigelt et al.; Adv. Eng. Mater. The combination of two or more different materials offers a range of advantages. Regarding crashworthiness, for instance, composite materials enable manifold possibilities for micro- and macrostructure designs. They can be adapted for the intended application and required characteristics. Crashworthiness is concerned with the absorption…

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University of Limoges developing composite ceramics for aeronautics applications

By Martin Grolms / August 4, 2011

ZrC-SiC materials from poly(methylvinylsilane) Credit Pizon, et al.; Advanced Engineering Materials. New advanced materials are often drivers of technologies, especially for aeronautics applications. Many materials have been developed to resist severe working conditions, which usually couple high-temperature and mechanical-stress corrosion resistance. For these applications, non-oxide ceramics are promising materials, particularly transition metal carbides, such as zirconium…

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Bioactive cement plaster: Bioengineering in action

By Martin Grolms / March 29, 2011

Electron micrographs of the cross-section of magnesium phosphate cement-cylinders. (a) MPC-cylinder without bacteria. (b) Macroporous structure within the inner section of freshly prepared MPC with embedded R. ruber bacteria. (c) Macroporous structure within the inner section of MPC with embedded R. ruber after 19 batch cycles. The arrows mark assemblies of R. ruber bacteria. Credit:…

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