Projects / Programmes
Processes for Advanced Materials and Composites Preparation
| Code |
Science |
Field |
Subfield |
| 2.02.07 |
Engineering sciences and technologies |
Chemical engineering |
Inorganic products |
| Code |
Science |
Field |
| T150 |
Technological sciences |
Material technology |
nanosized-materials, composites, nanostructured composites, coated particles, cermets
Researchers (4)
| no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
| 1. |
01348 |
PhD Jadran Maček |
Chemical engineering |
Head |
1999 - 2001 |
384 |
| 2. |
14115 |
PhD Marjan Marinšek |
Materials science and technology |
Researcher |
1999 - 2001 |
569 |
| 3. |
08353 |
PhD Barbara Novosel |
Materials science and technology |
Researcher |
1999 - 2001 |
467 |
| 4. |
07557 |
PhD Klementina Zupan |
Materials science and technology |
Researcher |
1999 - 2001 |
241 |
Organisations (1)
Abstract
This research project fosuses chemical methods and processes for the preparation of modern and advanced materials and composites and their characterization. It is based on the study and practical aplplication of the fundamental laws governing complex reaction systems, which enables the control and preparation of the materials with specific, well defined macro and micromorphological and other properties. The properties of the products and of the materials that can be obtained by further treatment of such precursorsdepend to alarge extent on particle size and particle size distribution. The field of synthesis of the advanced materials nowadays rapidly expanding from the classic macro products to products for micro and nanotechnologycal applications. The methods and processes for the preparation of very small particles and composites are the core of the project. The processes by which such products are produced can be classified or grouped ''''from the bottom up''''. By understanding and proper control of systems of chemical reactions the preparation of the products can be initiated from the fundamental particles of matter (atoms, molecules, ions) resulting in particles of predetermined dimensions and characteristics. Control of the size and particle size distribution and in this way also of the other properties, can be achieved by precisely controlling the initial phases of precipitation/crystallization, e.g. nucleation and particle growth and by hindering or enhancing their aggregation to final particles. Acceleration of the nucleation rate and simultaneous hindering of aggregation leads to nanoproducts. Unhindered aggregation produces larger submicro or micrometer sized particles. By mens of controlled nucleation the particle size distribution can be influenced either in the direction of poly- or mono-dispersed powders as well. The replacement of a two component reaction system with a multicomponent one leads to the simultanous formation of several solid phases and the formation of composite materials. Mastering the micromorfological characteristics of the dispersion of two ore more phases is crucial. The properties of the composites can be influenced by directing of the reactions after the initial nucleation phase to the hetero- or homo-aggregation of the primary particles. Early and predominant heteroaggregation leads to the formation of a solid phase in the form of more or less well defined solid solutions and proper coprecipitates. By directing the reaction systems, to the enhanced or prevailed homoaggregation the dispersions tend to be coarser or the reactions in the extreme case lead to the simultaneous precipitation of a mixture of two powdered products….
