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Titanium (TiO2) coated nano-carbons in an aluminium matrix for weight reduction applications

Poster presented at Euro LightMAT 2013, Magnesium, Aluminium, Titanium. Science and Technology. International Congress on Light Materials, 3-5 September 2013, Bremen
: Addinall, Raphael

Poster urn:nbn:de:0011-n-2670371 (4.7 MByte PDF)
MD5 Fingerprint: 93c054a2d4f62b673aa60768308e517c
Erstellt am: 28.11.2013

2013, 1 S.
International Congress on Light Materials (LightMAT) <2013, Bremen>
Poster, Elektronische Publikation
Fraunhofer IPA ()
Metal Matrix Composite (MMC); Titandioxid; Aluminiummatrix; Leichtbau; Verbundwerkstoff; Beschichten

One of the most urgent needs in automotive industry is the reduction of weight. Light cars produce less CO2, use less energy, are easy to brake or accelerate and show a much better driving performance than heavier cars. In the case of electro vehicles, weight reduction is vital to extend the driving range - thus lightweight material is a key for modern mobility. While metal alloys already reached their technical limits, carbon fibre based car parts are still not mass producible today. This situation leads to a gap which can be filled by using carbon nanotubes (CNT) reinforced alloys to provide high-performance alloys for the mobility of tomorrow.
By modifying the nano carbon (NC) surface through coating (via CVD- or Sol Gel-procedure) it is possible to further increase the interfacial bonding as well a protecting the NC from detrimental composite manufacturing processing. The metal-oxide coatings applied via this two procedures differ in structure and degree of coating. Although a full coating of the NC has not been reached so far, results in achieved in processing are encouraging. The advantages and disadvantages of both procedures for large scale application are discussed.
Fraunhofer IPA has been conducting research and development of metal matrix composites (MMC) with such nano-carbon materials. The outstanding thermal, electrical, and mechanical properties of nano-carbons are applied to a wide range of applications. By varying the manufacturing process it is possible to tailor the physical, thermal or electrical properties of the material.
The result is an aluminium alloy exhibiting vastly superior reproducible physical properties (tensile and ultimate strength increased by 100% and 180% respectively, Impact strength over 270%, E module increase of 30% (ductility kept) and increase of 80% in damping ratio) produced by an economically feasible process (up scalable).