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Invited researcher Ramon Torrecillas
Contract number
14.B25.31.0012
Time span of the project
2013-2017
Head of the laboratory

As of 30.01.2020

19
Number of staff members
46
scientific publications
21
Objects of intellectual property
General information

Name of the project: Development of innovative spark plasma sintering technologies for creation of a new class of nanocomposite materials for machinery engineering applications

Strategy for Scientific and Technological Development Priority Level: а

Goals and objectives

Research directions: Ceramic nanocomposite materials, optimization of spark plasma sintering technologies, applications of graphene and graphene oxide in materials

Project objective: Creation of an innovative laboratory of spark plasma sintering for development of the scientific and technological basics of nanocomposites production with unique physical and mechanical characteristics in Russia


The practical value of the study

  • Our researchers studied effects of electric current (field) on growth of grains of materials, researched velocities of compaction and deformation of ceramic and metal ceramic materials and nanocomposites (we have investigated materials that conduct electric current and insulator materials).
  • A methodology and equipment have been developed for integral control over the technological process in spark plasma sintering systems (SPS). The chosen controlled parameter is temperature in the sintering zone. 8 patents for devices for producing objects from composite powders have been obtained.
  • Software has been produced on the basis of mathematical models developed at the Laboratory and microphysical descriptions of the process allows to model temperature fields factoring in properties and geometry of the matrix and the sample and hence to determiner required technological parameters of the hybrid spark plasma sintering (maximum temperature and heating rate of the powder compact, pulse format and duration, applied pressure).
  • We have developed technologies to produce innovative poreless nanocomposite materials with enhanced operational properties based on systems: WC, Al2O3-ZrO2-TiN, Si3N4, TiC, Al2O3-SiCw-TiC and Al2O3-SiCw. Volume concentration of pores is less than 0,01%; grain size is not more than 500 nm; crack toughness of more than 13,24 MPa·m1/2. Results of research have been published in a number of articles and patents for results of intellectual work were obtained.
  • Our researchers have conducted works cover all the stages of production of materials using spark plasma sintering: modeling spark plasma sintering processes, preparation of nanopowder mixtures, study of qualities of produced powder mixtures, materials sintering, study of properties of produced samples.
  • We have developed step-by-step methodologies for producing nanocomposite gradient materials of a new class with enhanced properties for the machine engineering industry.
  • A technology has been developed for producing poreless nanocomposite ceramic materials with enhanced operational properties modified with carbon nanofibers and graphene. As a result of this work we have obtained patents for inventions.
  • A technology has been developed for producing nanocomposites based on copper by spark plasma sintering and mechanical doping. The technology will allow to replace silver in electronic components with minimum technological loss of materials. This technology allows to produce ready-to-use contacts without additional processing (unlike the extruding technology). The material possesses demonstrates the destruction temperature of over 850°С and does not swell while being exposed to temperatures of over 850°С, its specific electrical conductivity reaches 48,3 MS/m (83% of IACS).
  • We have developed technologies for producing ceramic and metal-ceramic nanocomposite products of complex geometric shapes. Using optimization of technological parameters of the process of hybrid spark plasma sintering and a specially developed graphite gear we managed to achieve high values of mechanical properties as well as ensure their even distribution around the whole volume of sintered ceramic nanocomposites with square cross-section.

Implemented results of research:

  • The technology of spark plasma sintering of graphene-fortified nanocomposite materials with enhanced mechanical and operational characteristics has been used by «VNIIINSTRUMENT» JSC to produce multi-sided cutting planes.
  • The technology of production of nanocomposite from copper by plasma sintering that is able to replace silver in various electrical contacts with minimal technological loss of materials is used by «SOYUZKAROBON» JSC for creation of interrupting electrical contact.

Education and career development:

  • The following courses have been introduced to the educational process of the university: «Equipment of the machinery production industry», «Nanotechnology in the machinery production industry», «Efficiency of refinement processes», «Technological basics of high-speed shape-forming processing of materials», «Materials and highly efficient technologies of modern manufacturing», «Modern machinery production industry materials», «Intensification of processes», «Introduction to nanotechnologies».
  • Member of the Laboratory's academic staff have completed internships at top-tear foreign research and education centers and leading industrial organizations such as the Spanish Nanomaterials and Nanotechnology Research Center (CINN, the Polytechnic University of Milan (Italy), the University of Zielona Góra (Poland), the German company «FCT Systeme GmbH» that manufacture hot pressing devices and spark plasma sintering units.

Other results:

  • 55 scientific articles have been published in leading scientific journals indexed by the databases Scopus, Web of Sciеnce and Russian Science Citation Index.
  • 13 R&D projects for development of innovative materials and spark plasma sintering have been completed with the overall cost of works amounting to 270 million rubles.
  • 22 patents for inventions and useful models for the most relevant modern materials and technologies have been obtained.

Collaborations:

  • «VNIIZhT» JSC (RUssia): research in the field of new materials for railway transportation based on copper to replace silver in various interrupting electrical contacts (Cu-Al2O3) as well as new anti-friction aluminum materials for monometallic slide bearings
  • «VNIIINSTRUMENT» JSC (Russia): research in the field of production of new materials for cutting equipment, creation of nanostructured ceramic materials for producing replaceable multi-sided cutting planes with enhanced characteristics
  • Autonomous University of Madrid (Spain): research in the field of creation of new ceramic and biostructured nanomaterials, creation of fault-free and wear-resistant ceramo-metal composite based on tantalum and zirconium oxide for applications in heavy-duty nodes
  • Friedrich Schiller University Jena (Germany): research in the field of creation of new compositions of materials, creation of new ceramic nanocomposites from powders obtained using the laser evaporation method
  • Nanomaterials and Nanotechnology Research Center – CINN (Spain): production of new ceramic composite materials (Al2O3-SiCw-TiC, 3Y–TZP/rGO, TiCN-NbCN-TaCN, ZrO2-Ni and others) with improved mechanical and physical properties
  • Institute of Strength Physics and Materials Science of the Siberian Division of the Russian Academy of Sciences (Russia): development of a biocomposite material with with bactericidal and high osseointegration properties
  • «World Market» LLC (Russia): creation of new powder compositions
  • «EKOS-1» JSC (Russia): producing samples of ceramic materials by spark plasma sintering
  • «Nanoker Research» LLC (Russia): research in the field of new generation ceramic cutting tools, creation of nanostructured ceramic materials Al2O3-SiCw-TiC-Ni.

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Grigoriev S., Peretyagin P., Smirnov A., Solís W., Díaz L.A., Fernández A., Torrecillas R.
Effect of graphene addition on the mechanical and electrical properties of Al2O3-SiCw ceramics. Journal of the European Ceramic Society 37: 2473–2479 (2017).
Torrecillas R., Gutiérrez-González C.F., Suarez M., Pozhidaev S., Rivera S., Peretyagin P., Solís W., Díaz L.A., Fernandez A.
Effect of TiC addition on the mechanical behaviour of Al2O3–SiC whiskers composites obtained by SPS. Journal of the European Ceramic Society 36: 2149–2152 (2016).
Gutierrez-Gonzalez C. F., Smirnov A., Centeno A., Fernández A., Alonso B., Rocha V.G., Torrecillas R., Zurutuza A., Bartolome J.F.
Wear behavior of graphene/alumina composite. Ceramics International 41: 7434–7438 (2015).
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