Nanostructured composite materials and reinforced ductile iron for high wear application


CALL: 2010

DOMAIN: MS - Materials, Physics and Engineering

FIRST NAME: Nathalie






START: 2011-10-01

END: 2014-09-30


Submitted Abstract

Aims: to improve wear resistance & frictional behaviour and to triple the life of tribological material’s pair in heavy duty applications, as well as to improve comfort and safety of cooperating componentsObjectives:· To create stable chemical contact bond between surfaces of soft (i.e.Al alloy) and hard material (Si3N4, vitreous carbon) in core-shell nanocomposite particles by mechanochemical processing and appropriateparticles coating, if necessary· To create functional gradient of alloying elements in a controlled way (dimension, distance, localization, temperature distribution etc) by casting ductile iron with stainless steel inserts with specific chemical composition and careful heat treatment· To maintain submicro or nanostructure features of the product after consolidation of composite particles by thermal treatment and precipitation of the relevant ceramic compound· To manufacture nanostructured composite-based and ductile iron-based components as well as to determine proper material combinations with improved wear resistance and stable and constant friction coefficient (0.6-0.7)· To manufacture wear resistant prototype of automotive brakes system and/or face seals with improved performance in terms of safety, maintenance, friction stability and doubled wear resistanceExpected results: Acquired knowledge and better understanding of the wear behaviour of the nanostructured composites in relation to their microstructure and properties as a result of mutual PhD thesis (SUT&CRP-GL) and several MSc thesis (HE-partners)· Know-how on production of excellent wear resistant nanostructured particulate composite products for various applications· Know-how on production of reinforced ductile iron with good frictional properties of ductile iron and 10-times better wear resistance · Field-test validated prototypes for the automotive brake systemand/or face seals if the materials passed the laboratory test· Formation of the transnational innovation chain: university-based idea&research + laboratory validation +pilot production + professional validation &characterization in order to meet the specific market need: better and cheaper wear resistant materials (nano-composites and reinforced ductile iron)

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