Elisaveta Tasheva

Elisaveta Tasheva
Todor Kableshkov Higher School of Transport · Transport Management

PhD

About

4
Publications
771
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15
Citations

Publications

Publications (4)
Article
Full-text available
Developed are electrodes nano modified with chromium coated titanium nitride (TiN + Cr) intended for manual arc weld overlay of wear resistant layers based on electrode grade Е300 and their hardness, micro hardness and wear resistance are assessed. The nano modified weld overlaid layers are examined using scanning electron microscope with X-ray mic...
Conference Paper
Full-text available
A series of cored wires for TIG (tungsten inert gas) surfacing have been designed and elaborated, which contain various content types of nano-modifiers in various percentage content. Nano-modified coatings were deposited through weld overlay on samples of construction steel. The investigation reveales the influence of various nano-modifiers on the...
Article
Full-text available
Developed is innovative manufacture technology for electrodes nano-modified with TiN, Al 2 O 3 , SiC, TiCN+C, TiN+Cr, and TiCN purposed for weld overlay of wear resistant surface layers. Test samples are cladded using the manufactured electrodes. Vickers hardness and wear resistance of the overlayd metal are measured The resulting variations of har...

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Projects

Project (1)
Project
Nano-modified welding electrodes, based on electrodes E 300 with coating containing nano-sized TiN, Al2O3, SiC, TiCN, and TiN+Cr powders, for overlay welding of wear resistant layers are developed in Institute of Metal Science, Equipment and Technologies "Acad. A. Balevski" with Hydro-and Aerodynamic Centre – BAS and Institute of Welding-Sofia. Overlay welding samples are prepared. The technological properties of the manufactured electrodes are assessed. The overlaid layer is tested for Vickers micro hardness. The cylindrical testing samples are prepared and tested for wear resistance. The influence of different nano-powders on wear resistance is studied