Projects / Programmes
Electron microscopy of materials
January 1, 1999
- December 31, 2003
Code |
Science |
Field |
Subfield |
2.04.00 |
Engineering sciences and technologies |
Materials science and technology |
|
1.04.00 |
Natural sciences and mathematics |
Chemistry |
|
Code |
Science |
Field |
P250 |
Natural sciences and mathematics |
Condensed matter: structure, thermal and mechanical properties, crystallography, phase equilibria |
T153 |
Technological sciences |
Ceramic materials and powders |
P352 |
Natural sciences and mathematics |
Surface and boundary layery chemistry |
P420 |
Natural sciences and mathematics |
Petrology, mineralogy, geochemistry |
Researchers (9)
no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
1. |
06627 |
PhD Slavko Bernik |
Materials science and technology |
Researcher |
2001 - 2003 |
640 |
2. |
03937 |
PhD Miran Čeh |
Materials science and technology |
Head |
2001 - 2003 |
655 |
3. |
19029 |
PhD Nina Daneu |
Materials science and technology |
Researcher |
2001 - 2003 |
431 |
4. |
05216 |
Medeja Gec |
|
Researcher |
2001 - 2003 |
42 |
5. |
20825 |
Boštjan Kaltnekar |
|
Researcher |
2001 - 2002 |
0 |
6. |
10083 |
PhD Aleksander Rečnik |
Chemistry |
Researcher |
2001 - 2003 |
651 |
7. |
15597 |
PhD Zoran Samardžija |
Materials science and technology |
Researcher |
2001 - 2003 |
599 |
8. |
21554 |
PhD Vesna Šrot |
Materials science and technology |
Researcher |
2001 - 2003 |
61 |
9. |
19030 |
PhD Sašo Šturm |
Materials science and technology |
Researcher |
2001 - 2003 |
662 |
Organisations (1)
no. |
Code |
Research organisation |
City |
Registration number |
No. of publicationsNo. of publications |
1. |
0106 |
Jožef Stefan Institute |
Ljubljana |
5051606000 |
91,679 |
Abstract
The physical properties of technologically important polycrystalline materials (ceramics, metals, composites) are to great extent determined by the chemical composition and structure of internal boundaries, such as interfaces and planar faults (twins, polytypic faults, anti-phase boundaries, etc). Planar faults in particular often induce exaggerated and/or anisotropic growth of the crystalline matrix. The atomic-scale determination of the structure and chemical composition of such faults is therefore essential in order to understand their formation, which so pronouncedly influences evolution of the microstructure. Only when such planar faults are adequately characterized, can the mechanisms involved in grain growth be properly understood and the processing conditions for production of the material be altered accordingly, in order to achieve the requisite properties of the material. The aim of the proposed research program is therefore to characterize the structure and chemistry of internal boundaries and other microstructural features in a number of technologically important ceramic materials, such as functional ceramics, engineering ceramics, bioceramics, etc., using different electron microscopy techniques. The final goal of these studies is to determine the relations and general rules that correlate the structure and chemical composition of materials on the nano-scale with the resulting phenomena, such as exaggerated and/or anisotropic grain growth, polytypism, polymorphism and solid solubility. For such structural and chemical characterization, the following electron microscopy techniques will be used: scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDXS) and wave-dispersive X-ray spectroscopy (WDXS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and scanning transmission electron microscopy (STEM) with bright-field (BF), dark-field (DF) and high-angle annular-dark field imaging (HAADF). Chemical composition on the atomic level will be determined by energy-dispersive X-ray spectroscopy (EDXS), electron energy-loss spectroscopy (EELS) and energy-loss near-edge structure spectroscopy (ELNES). In connection with the National Centre for Microstructural and Surface Analysis, new specialists in the field of electron microscopy will be trained and new analytical methods implemented.
Most important scientific results
Final report
Most important socioeconomically and culturally relevant results
Final report