Projekt

Zirconia ceramics are materials of great scientific and practical importance because of their combination of advantageous properties, such as high strength, chemical inertness, good abrasion and wear resistance, high melting point as well as high electrical resistivity. Due to their excellent properties, ceramics are used in a wide range of applications, including the chemical industry, machinery, electronics, aerospace and biomedical engineering. The project is part of an attempt to create an integrated (comprehensive) algorithm of predicting the material properties, namely, creation of a database of materials, where the traditional route "composition-structure (and its change)-properties" is completed by an adequate computer model. The aim of the project is to detect common regularities of the grain size effect and phase stability on phase transformation in the system ZrO2-Y2O3 in the process of crack propagation in a sintered monolitic ceramics and the development of a numerical model, adequately describing the process of phase transformation in the grains of zirconia under the condition of crack propagation. The use of 3D printing, as perspective sample rapid prototyping technique is needed to comprehensive study of structural peculiarities, phase transformation and its effect on mechanical properties of zirconia ceramics. The developed models will be in demand by engineers and experts interested in optimization of fracture toughness of ceramic materials prone to phase transformations.

• Prof. Dr. Stefan Weihe

  Universität Stuttgart
  Institut für Materialprüfung, Werkstoffkunde
  und Festigkeitslehre (IMWF)
  Stuttgart
  

• Dr. Igor Danilenko

  National Academy of Sciences of Ukraine
  Donetsk Institute for Physics and Engineering
  Kiev
  Ukraine
  

• Prof. Dr. Yevgenii Deryugin

  Russian Academy of Sciences
  Institute of Strength Physics
  and Material Science
  Tomsk
  Russland
  

• Influence of nanopowder sintering technology on crack resistance of tetragonal zirconium dioxide.

• Do smaller oxide particles sinter worse? Paradoxes of the initial stages of sintering of zirconia nanoparticles.