Edyta Łyczkowska-Widłak

Edyta Łyczkowska-Widłak
Wrocław University of Environmental and Life Sciences · Institute of Environmental Engineering

About

8
Publications
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129
Citations

Publications

Publications (8)
Article
Purpose This paper aims to present the way of modifying surfaces of 316L stainless steel elements that were manufactured in the selected laser melting (SLM) technology and then subjected to mechanical and electrolytic processing (electropolishing [EP]). The surface of the as-generated and commercial produced parts was modified by grinding and EP, a...
Article
Full-text available
Long-term exploitation of industrial electropolishing baths may contribute to the emergence of surface defects and may limit the range of applicable current densities. Due to this, extending the time of use of industrial baths is a major challenge. The application of electrochemical reduction in the process of reduction industrial baths enabled to...
Article
The titanium–aluminium–niobium alloy is used in bone, dental and articular prosthetics, where high final surface quality is required. Bone scaffolds for tissue engineering require optimized cellular structures to provide pore diameters allowing the growth of osteoblasts. The aim of the presented paper is to estimate the quality of surface treatment...
Article
Monolithic and spatial samples of Ti-6Al-7Nb alloy were prepared by powder-bed selective laser melting and treated in HF and HF+HNO3 baths to improve surface quality and remove loose powder particles trapped in the porous structure of the samples. The HF+HNO3-contg. bath was more efficient (better surface quality, shorter treatment time) than the H...
Article
Cr-Ni stainless steel was examd. before and after pickling and electropolishing for corrosion resistance in 0.5 M NaCl soln. by detn. of open circuit potentials and potentiodynamic polarization curves. The steel was pickled in HF and HNO3-contg. bath and electropolished in a H2SO4, H3PO4 and N(CH2CH2OH)3-contg. soln. also under industrial process c...
Article
Full-text available
316L stainless steel was electropolished in 3 electrolytes consisting of H2SO4, H3PO4 and org. additives (Et3N, OHCH2CH2OH, (COOH)2, PhNHAc, glycerol) at 55°C and anodic current d. 20 A/dm2. In the Et3N-contg. bath, the roughness Ra was 0.063–0.065 µm and in the OHCH2CH2OH, (COOH)2 and PhNHAc-contg. bath, 0.091–0.096 µm. The bath consisting H3PO4...
Article
Industrial and model bathes for long-term electropolish-Ing 304 steel were studied for Fe, Cr and Ni contents for 120 days of operation at 11 Ah/L. The proportional contents of Fe:Cr:Ni ions in the both baths were similar. The decrease in the steel surface roughness was neglegible.
Article
Full-text available
Badania dotyczyły procesu elektropolerowania stali chromowo-niklowej typu 304 (X5Cr-Ni18-10, 1.4301, 0H18N9). Wykazano, że w trakcie elektropolerowania zarówno kąpiel przemysłowa, jak również kąpiel przygotowana z odczynników o dużej czystości i pracująca w warunkach laboratoryjnych, wzbogacają się w jony żelaza, chromu i niklu w tych samych propor...

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Projects

Project (1)
Project
The project foresees the development of an innovative mathematical model that will allow for the determination of the threshold contamination of the baths used in the industrial process of stainless steel electropolishing.