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Projects / Programmes source: ARIS

PHYSICS AND CHEMISTRY OF INTERFACES OF NANOSTRUCTURED METALLIC MATERIALS

Research activity

Code Science Field Subfield
2.04.02  Engineering sciences and technologies  Materials science and technology  Metallic materials 

Code Science Field
T450  Technological sciences  Metal technology, metallurgy, metal products 
Keywords
nanostructured metallic materials, interfaces, nanostructure characterization, surface segregation, grain boundary segregation, P, deformation, texture, surface reconstruction-nanostructuring, non-oriented electrical steels, permeability, core loss, high strengh spring steels; characterization of interface coating/substrate such as polymer/metal, PACVD deposited TiN films/metal, antibiofouling Field emission Auger Electron spectroscopy (FE-AES); X-ray photoelectron spectrocopy (XPS); Field emission scanning microscopy (FE-SEM), Energy dispersive x-ray spectroscopy (EDS); Wave dispersive x-ray spectroscopy (WDS), Electron backscattered difraction spectroscopy (EBDS); High resolution transimission electron microscopy (HR-TEM), Scanning transmission electron microscopy (STEM) equipped with EDS
Evaluation (rules)
source: COBISS
Researchers (16)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  19165  PhD Marjetka Conradi  Physics  Researcher  2010 - 2011  164 
2.  03937  PhD Miran Čeh  Materials science and technology  Researcher  2008 - 2011  655 
3.  25126  PhD Črtomir Donik  Materials science and technology  Researcher  2008 - 2011  317 
4.  10842  PhD Matjaž Godec  Materials science and technology  Researcher  2008 - 2011  884 
5.  05675  PhD Monika Jenko  Neurobiology  Head  2008 - 2011  843 
6.  18475  PhD Aleksandra Kocijan  Materials science and technology  Researcher  2008 - 2011  256 
7.  22454  PhD Tadej Kokalj  Interdisciplinary research  Researcher  2008 - 2011  76 
8.  21381  PhD Miha Kovačič  Manufacturing technologies and systems  Researcher  2008 - 2011  246 
9.  17199  Nataša Lipovšek    Technical associate  2008 - 2011  81 
10.  08850  PhD Djordje Mandrino  Physics  Researcher  2008 - 2011  234 
11.  21772  PhD Milorad Milun  Materials science and technology  Researcher  2008 - 2011  68 
12.  24381  PhD Aleš Nagode  Materials science and technology  Junior researcher  2008  407 
13.  04253  Miroslav Pečar  Electronic components and technologies  Technical associate  2008 - 2011  16 
14.  18782  PhD Bojan Senčič  Manufacturing technologies and systems  Researcher  2008 - 2011  92 
15.  14647  PhD Darja Steiner Petrovič  Materials science and technology  Researcher  2008 - 2009  237 
16.  25498  PhD Barbara Šetina Batič  Materials science and technology  Researcher  2008 - 2011  257 
Organisations (3)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  91,921 
2.  0206  Institute of Metals and Technology  Ljubljana  5051622000  6,098 
3.  1610  ŠTORE STEEL podjetje za proizvodnjo jekel, d.o.o. (Slovene)  Štore  1197967  736 
Abstract
The development of methods for characterization of metallic nanostructures and their interfaces at the nanoscale and atomicscale is foreseen in the proposed project The project consists of three topics The first part is dedicated to development of characterization of the interface of advanced nanostructured coatings for the control of bio fouling. The object of the research is interface between coating and substrate. The nanostructured polymer thin films, ITO (Indium-Tin-Oxide) thin films and PACVD deposited TiN and SiOx thin film on the substrates glass, silicon wafer, steel and titanium will be studied. For characterization of polymer films XPS method together with C60 ion gun for sputtering and ARXPS in some cases the FE-AES and HRTEM and STEM will be used. The second part is dedicated to the research of nanostructuring phenomena of FeSi alloy with 2.8 and 3.0 mass% Si. For equilibrium surface segregation studies of P in situ in the analyzing chamber of the FE AES spectrometer in the temperature range from 600 to 800oC and in situ in HRTEM. Grain boundary P segregation will be also investigated in details to find the correlation of the texture formation with the final electromagnetic properties. The third part is dedicated to the investigation of dislocation substructures in austenite and in martensite of 51CrMoV4 alloy using HRTEM. 51CrMoV4 alloy, spring steels, is used in automotive industry. The influence of inclusions content, segregation of surface active elements on the surface and grain boundaries will be studied also. Thermodynamic simulation using different elements for micro alloying will enable us to determine appropriate thermo mechanical treatment and we expect the result will lead to the development of a new grade of spring steel.
Significance for science
In the frame of the project a new methodology was developed for the characterization of nanostructured metal materials and interface analysis at nano and atomic scale. The project consists of three topics, namely the first is to characterize the boundary layers (interface) of nanostructured coatings that prevent or reduce the adhesion of fouling organisms in the aquatic environment. The interfaces between the nanostructured coatings and metal substrates were the subject of the research. We developed a new experimental method for sample preparation for characterization of these layers. To study the boundary layer between soft polymer coating and hard substrate, a new experimental technique for sample preparation was introduced, and is the first such instrument in the Slovenian territory. The sample is cut and polished at the same time with an Ar ion-beam and purchased equipment (ion cross section polisher). Furthermore, we developed a new technique that enabled us to study thicker films by X-ray photoelectron spectroscopy XPS. The second part of the project was devoted to the characterization of nanostructured surfaces on FeSi2 alloy. The adsorption of P was investigated in situ in the analysis chamber of Auger spectrometer in the temperature range from 600 to 850 °C in ultra-high vacuum on polycrystalline alloys and the base surface of monocrystal Fe (110), with the addition of 0.05 % selenium. Selenium is a surface-active element, which at elevated temperatures segregates to the surface and cause surface-reconstruction faceting. An experimental technique for measurements of equilibrium segregation in situ was developed at IMT, and the mechanism and kinetics of segregation was determined. The phenomenon of faceting was compared to the formation of ripples at lower temperatures and with the ion beam application in the frame of PhD Thesis entitled “Ion beam modification of surfaces in the nanoscale domain”. A new research field introducing the nanostructuring of the surface using ion beam was opened, which is a promising and less costly process than nanolithography. The third part of the projectis interesting for Štore Steel, a producer of steel for high-strength springs. The non-metallic inclusions are crucial for the desired quality of steels and springs. Therefore, in the frame of BSc Thesis entitled “Comparative analysis of 51CrV4 alloy and structuring of the results” a new methodology for determining content of non-metallic inclusions and their spatial distribution was produced, which represents a completely new approach not currently accessible in the literature data. The PhD thesis "Characterization and modelling of the microstructure of spring steel using genetic algorithm" is also under preparation as a part of Nanosciences and Nanotechnologies-Advanced Metallic Materials, in the frame of JSI and IMT at the Jožef Stefan International Postgraduate School.
Significance for the country
Results of development of new methodologies and experimental techniques for characterization of metallic materials and composites on nano and atomic scale as well as implementation to Slovenia is very important for Slovenian R&D. Direct impact of the project to Slovenian economy and society of the results of the first topic of the project is through the development of new advanced nanostructured surfaces of coatings to prevent bio fouling in aquatic media. The results will also impact on Slovenian industry, development of PACVD coatings, and application on steel plate for shipbuilding. The results of second topic are important for non oriented steel, FeSi alloy, producer ACRONI and also for producers of nanaostructured surfaces using ion beam, this is a promising and less costly process than nanolithography. The results are also important for company LPKF, the nanostructuring is possible also with laser ablation. The results of third topic are very important for steelwork ŠtoreSteel producer of high quality spring steels for manufacturing of high strength springs for automotive industry. The most important is the Model for simulation of space distribution non-metal inclusions in spring steels.
Most important scientific results Annual report 2008, 2009, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2008, 2009, final report, complete report on dLib.si
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