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Technical Ceramics on a Space Exploration Mission – CeramTec

Specimen holders made from silicon nitride ceramics
CeramTec is producing ceramic components for Astrium GmbH’s experimental unit, which will be integrated in the International Space Station (ISS) in July 2014. The sophisticated, complex silicon nitride components are required for specimen holders. This equipment will be used to analyze material science experiments under zero-gravity conditions in space. The parts will be used in the “Materials Science Lab – Electromagnetic Levitator” (MSL-EML) experimental unit, which will be integrated in the European science lab, called Columbus, on the ISS in July 2014.

Materials Science Lab Trial at Astrium
The unit can perform precision measurements that are not yet possible on earth in a temperature range from +400°C to +2,000°C for specific thermophysical properties of chemically aggressive molten metals. This enables scientists to analyze the early phases of development of a material’s microstructure. The objective of these types of studies is to deepen our understanding of transfer processes, atomic structures and material properties, which in turn will allow manufacturers to refine, improve and re-invent their production methods, materials and products.

A variety of cylindrical and cage specimen holders made of silicon nitride are used here. The specimen holders enter a coil that contains metal alloy specimens that remain suspended by electromagnetic fields without any contact whatsoever with their surroundings. The specimens are melted, cooled in their liquid state and then re-solidified for the experiments.

Silicon Nitride Ceramics possesses ideal Properties

The electrical conductivity of materials used for the specimen holders must not interfere with the coil’s electromagnetic fields. Moreover, the specimen holders must exhibit extreme resistance to heat. The advanced silicon nitride ceramics used here offer all of the material properties required to meet these specifications. All of the ceramic parts on the specimen holders are manufactured by Baden-Württemburg-based CeramTec.

The MSL-EML is an experimental unit developed by Astrium by order of ESA (European Space Agency) and the German Aerospace Center (DLR). It is used by groups of scientists from Europe, North America and Japan. It is the only unit of its kind in the world and has already been used in three Spacelab missions in cooperation with NASA. Astrium GmbH is a company of Airbus Space and Defense Group, the leading aerospace company in Europe.

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Technical Ceramics for the Olympic Ski Jumping Hills in Sochi -CeramTec

Sochi ski jumping hills equipped with CeramTec technology

Olympic ski jumping hill in Sochi with an inrun track from CeramTec. Made in Germany.
From February 7th-23rd, 2014, all eyes will be on Russia for the XXII Olympic Winter Games in Sochi. The best ski jumpers in the world will compete in the Nordic combined and ski jumping events in the RusSki Gorki Jumping Center. Here, both the normal hill and the large hill have been equipped with ALOSLIDE® ICE technology from CeramTec. The inrun track system enables athletes to jump in perfect conditions, regardless of the weather.

ALOSLIDE® ICE is a one-track inrun system outfitted with ceramic nubs that are vulcanized in special caoutchouc in a scientifically tested design. A cooling unit integrated into the system creates a stable layer of ice 20 mm thick in good snow conditions and in temperatures up to +15°C. An integrated ice cutter and brushes regulate the thickness of the ice and prepare it. The system can be switched easily from summer to winter operation or vice versa without the need for additional ice or snow. In summer, jumpers slide down the take-off ramp to the launch pad right on the ceramic nubs. This technology allows ski jump events to take place year-round in practically identical conditions.

Sergey Zyryanov, Chief of Hill for the Olympic ski jumps in Sochi, put the system to a test last October at an outside temperature of 18°C. He is thrilled with it, saying, “The ice formed and stayed. Neither the summer temperatures nor the steady rain that began a short time later were a match for the ice track.” Hydroplaning and puddle formation are a thing of the past thanks to this system, making additional drainage ditches in the ice unnecessary. Operating the system is easy. “You simply press a couple of buttons and in just a couple of days the track is complete,” explained Zyryanov.

This is not the first time ALOSLIDE® will be used in large competitions. The inrun track system allowed competitions to take place under optimal conditions back in 2006 at the Olympic Winter Games in Turin. In 2011, this German technology was also featured at the Asian Winter Games in Almaty, Kazakhstan. In the last five years, their system has been running reliably and without interruption from November to March. ALOSLIDE® proved itself successful at the facilities in Oberstdorf, Germany and Bischofshofen, Austria, for the Four Hills Tournament and in Klingenthal, Germany, home to the FIS Summer Grand Prix and the 2013 FIS team tour. Both the athletes and Werner Schuster, head coach of the German ski jumping national team, praised the CeramTec technology.

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