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Electrochemical Method of Copper Powder Synthesis on Rotating Electrode in the Presence of Surfactants

Wojtaszek K., Cebula F., Partyka B., Deszcz P., Włoch G., Socha R. P., Woźny K., Żabiński Piotr, Wojnicki Marek

Archives of Metallurgy and Materials

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2023

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Vol. 68, iss. 1

375--386

EN

This paper presents a method of synthesizing copper powders by electrochemical method with the use of a rotating working electrode. The influence of the rotation speed of the working electrode, the current density, the concentration of copper ions, and the addition of ethylene glycol on the shape, size, and size distribution of the obtained powders were investigated. Properties of the synthesized powders were characterized by scanning electron microscopy (SEM) and X-ray powder diffractometry (XRD). It has been shown that it is possible to obtain copper powders with a size of 1 µm by an electrochemical method using the rotary cathode, in sulphate bath with addition of ethylene glycol as a surfactant. Increasing current density causes a decrease in the average size of the obtained powder particles. The addition of 2.5% of ethylene glycol prevents the formation of dendritic powders. The change in the concentration of copper ions in the range from 0.01 to 0.15 mol/dm3 in the electrolyte did not show any significant effect on the size of obtained particles. However, higher concentrations of copper limiting the presence of dendritic-shape particles. Changing the speed of rotation of the electrode affects both the size and the shape of synthesized copper powder. For the rotational speed of the electrode of 115 rpm, the obtained powders have a size distribution in the range of 0-3 µm and an average particle size of 1 µm. The particles had a polygonal shape with an agglomeration tendency.

2

LabVIEW controller for storage results and control parameters of low thickness antireflection coatings deposition processes

Marszałek K., Małek A., Winkowski P., Woźny K.

Elektronika : konstrukcje, technologie, zastosowania

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2016

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Vol. 57, nr 2

31--34

PL

W artykule przedstawiono system do kontroli, wizualizacji i zapisu danych procesów PVD. System został zaprojektowany w oparciu o środowisko LabVIEW i został z powodzeniem zastosowany w przemyśle optycznym. Wizualizacja jest bardzo intuicyjna dla operatora daje łatwą możliwość kontroli wszystkich parametrów procesu. Zapisane dane pomagają w polepszeniu jakości powłok i dają możliwość analizy procesów. Niski koszt wprowadzenie systemu czyni go również bardzo użytecznym narzędziem do modyfikacji starszego typu napylarek próżniowych oraz daje szansę stopniowej jego rozbudowy.

EN

System for control, visualization and storage of PVD processes data is presented in this paper. The system has been designed in LabVIEW environment and has been implemented successfully in optical industry. Visualization is very intuitive for the operator and gives easy control of all important process data. Stored process data help improve the quality of the coatings and provide the ability to analyze processes. Low cost of implementation of the system also makes it a very useful tool for modifying older types of vacuum coaters and gives a possibility of gradual further expansion of systems.

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A New Model for the Regulation of Distribution System Operators with Quality Elements that Includes the SAIDI/SAIFI/CRP/CPD Indices

Putynkowski G., Woźny K., Balawender P., Kozyra J., Łukasik Z., Kuśmińska-Fijałkowska A., Ciesielka E.

Electrical Power Quality and Utilisation. Journal

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2016

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Vol. 19, iss. 1

1--7

EN

This document is a description of quality regulation for Distribution System Operators included in the new regulations model for 2016-2020 and informed by the SAIDI, SAIFI, CRP and CPD indices. The changes have an impact on the amount of return from regulated income of enterprises that distribute electric energy. In the new system, failure to fulfil the conditions and indices results in a decrease of return on capital for the DSOs

4

Pomiary porównawcze analizatorów jakości energii elektrycznej – eksperyment pomiarowy w ramach Pikniku Jakości Energii Elektrycznej

Chmielowiec K., Hanzelka Z., Firlit A., Piątek K., Woźny K., Rogóż M.

Elektro Info

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2015

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nr 9

72--75

PL

Energia elektryczna ulega degradacji pod wpływem zaburzeń elektromagnetycznych, a więc zjawisk, które sprawiają, że wartości wskaźników – cech jakości energii – różnią się od znamionowych, odnoszących się do układów sieci symetrycznych z przebiegami sinusoidalnymi oraz pracujących w stanie ustalonym.