Wyniki wyszukiwania - Biblioteka Nauki

1

Selected Cyclic Corrosion Tests in Automotive Industry

100%

Biało Ł. , Grodniewicz T. , Żabiński P. , Biało Ł. , Grodniewicz T. , Żabiński P.

|

nr 4

2

Zastosowanie mikroskopii AFM w analizie topografii powierzchni podczas anodowego roztwarzania siarczku miedzi (I).

94%

Burzyńska L. , Żabiński P. , Kowal A.

|

tom Vol. 32

215-225

PL

Elektrolityczne roztworzenie anod z siarczku miedzi (I) (Cu2S) prowadzi do zmian składu fazowego warstw powierzchniowych elektrody. W trakcie przebiegu reakcji na anodzie pojawia się siarczek miedzi (II) (CuS) a następnie siarka elementarna. Roztwarzanie Cu2S i CuS biegnie przy innych parametrach elektrolizy. Zmiany składu fazowego powodują zmiany wyglądu powierzchni elektrody. Zmiany te badano w zależności od stosowanej anodowej gęstości prądowej stosując mikroskop AFM. Stwierdzono, że stopień rozwinięcia powierzchni charakteryzowany przez jej szorstkość zmniejsza się wraz z obniżeniem anodowej gęstości prądowej. Dla tego heterogenicznego w obrębie fazy stałej układu spowodowane jest to prawdopodobnie różnicami szybkości biegu równoległych reakcji anodowego roztwarzania Cu2S i CuS w zależności od stosowanej anodowej gęstości prądu. Przy niskich gęstościach prądu szybkości roztwarzania obu siarczków są porównywalne. W wyniku stosowania wysokich gęstości prądu szybkość roztwarzania w tych warunkach powoduje skok potencjału elektrody.

EN

Electrolytic dissolution of anodes that are mode copper (I) silfife (Cu2S) letto create phase changes on the surface of electrode. During reaction on the anode, there apper copper (II) sulfide (CuS) and after that elemental sulfur. Reactions of Cu2S and CuS and CuS dissolution run under defferent electrolysis conditions. The phase changes crate modifications in the shape of electrode surface. The changes were studied as a function of anodic current density by AFM microscope. We found that the surface spread degree characterized by roughness was lowered with decreasing anodic current density. In this heterogenic system, probably it was the result different velocities of parallel and independent teactions of anodic dissolution Cu2S and CuS at various andodic current density. At application of current density causes the reaction to stop at the moment of CuS layer appearance. A very low velocity of CuS dissolution causes a jump of the electrode potential under these conditions.

3

Steel Packaging Production Process and a Review of New Trends

84%

Słowik M. , Cępa P. , Czapla K. , Żabiński P. , Słowik M. , Cępa P. , Czapla K. , Żabiński P.

|

nr 1

4

Electrocatalytical Properties of Palladium-Decorated Cobalt Coatings Obtained by Electrodeposition and Galvanic Displacment

71%

Skibińska K. , Kutyła D. , Kołczyk K. , Kwiecińska A. , Kowalik R. , Żabiński P.

|

5

Separation of Ho3+ in Static Magnetic Field

71%

Kołczyk K. , Wojnicki M. , Kutyła D. , Kowalik R. , Żabiński P. , Cristofolini A.

Archives of Metallurgy and Materials

|

2016

|

tom Vol. 61, iss. 4

1919--1924

EN

The rare earths elements (REE) belong to the group of critical metals and they are achieving more and more interest due to their special properties. However, there occur some problems connected with their production. The most difficult phase is separation of REE. It includes a necessity to intensify currently applied processes and looking for new solutions. The present work introduces an idea to use differences in physical properties of the REE ions to get them separated. In the experimental part of the work some efforts were undertaken to analyse results presenting changes of holmium ions concentration under an influence of the magnetic field gradient. There was determined the gradient of magnetic field and concentration of Ho3+ ions depending on initial concentration of the solution and time. A simulation of changing the concentration of holmium ions in the solution under an influence of the magnetic field gradient was performed to compare the mathematical model with the obtained results.

6

STUDY OF GOLD, COPPER AND NICKEL ADSORPTION, FROM THEIR ACIDIC CHLORIDE SOLUTIONS, ONTO ACTIVATED CARBON

60%

Kołczyk K. , Luty-Błocho M. , Wojnicki M. , Żabiński P. , Socha R. P. , Partyka B. , Polański M. , Deszcz P.

|

nr 1

7

Study of Gold, Copper and Nickel Adsorption, from their Acidic Chloride Solutions, Onto Activated Carbon

60%

Wojnicki M. , Socha R. P. , Luty-Błocho M. , Partyka B. , Polański M. , Deszcz P. , Kołczyk K. , Żabiński P.

|

tom Vol. 63, iss. 1

73--81

EN

In this paper, a simple and effective method for gold recovery is described. The paper describes a way to recover gold onto activated carbon from a synthetic solution of gold(III) chloride. The method can also be used on nickel(II) as well as copper(II) chloride of where the metal ion ratios are comparable to the metal ratios found in some electronic waste. With the use of activated carbon in the process of electrolyte purification it is possible to selectively remove gold in metallic form from the solution. XPS studies have confirmed that metallic gold is present on the carbon surface. A spectrophotometric method was used to determine the concentration of Au(III) in the solution. Different concentration of nickel(II) as well as copper(II) were investigated. In all cases, adsorption and reduction of Au(III) to the metallic form was observed.