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KOM – Corrosion and Material Protection Journal

Volume 66 (2022): Issue 1 (January 2022)

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Volume 56 (2012): Issue 4 (December 2012)

Volume 56 (2012): Issue 3 (October 2012)

Volume 56 (2012): Issue 2 (July 2012)

Volume 56 (2012): Issue 1 (March 2012)

Journal Details
Format
Journal
eISSN
1804-1213
ISSN
0452-599X
First Published
03 Apr 2012
Publication timeframe
4 times per year
Languages
English

Search

Volume 56 (2012): Issue 2 (July 2012)

Journal Details
Format
Journal
eISSN
1804-1213
ISSN
0452-599X
First Published
03 Apr 2012
Publication timeframe
4 times per year
Languages
English

Search

5 Articles
Open Access

Behaviour of creep-resistant steels in a transpassive zone

J. Rapouch and
J. Rapouch and
J. Bystrianský
J. Bystrianský
Published Online: 02 Aug 2012
Page range: 31 - 37

Abstract

Keywords

  • transpassivity
  • high temperature oxidation
  • creep resistant steel
Open Access

The potentiodynamic polarization using PIGE - testing of a method that helps identify historical metallic materials

J. Švadlena and
J. Švadlena and
J. Stoulil
J. Stoulil
Published Online: 02 Aug 2012
Page range: 38 - 42

Abstract

The potentiodynamic polarization using PIGE - testing of a method that helps identify historical metallic materials

The potentiodynamic polarization using a paraffin impregnated graphite electrode (abbreviated as PIGE) is an analytical electrochemical method suggested as an alternative to commonly used procedures of identification of historical metallic materials. The principle of the method consists in potentiostatic reduction of a small amount of the sample's corrosion products deposited on a PIGE and subsequent potentiodynamic oxidation of the reduced metals. The obtained potential/current density potentiodynamic curve is the starting point for determination of a metal present in the alloy (based on peaks' positions on the curve). The aim of the study was to test the methodology for identification of historical metallic materials and to monitor parameters that might impact the results of the analysis (polarization rate, size of particles, electrolyte de-aeration). The study also aimed to test suitability of the method for a quantitative analysis. Having applied the procedure on selected samples of alloys (solder and copper alloys), traces of silver, copper, tin and lead were identified in the samples, however, the possibility of using the method for quantitative analysis was not proven.

Keywords

  • restoration
  • electrochemical analysis
Open Access

Corrosion monitoring of an active/passive state of Zn coatings

M. Halama,
M. Halama,
D. Jerolitsch and
D. Jerolitsch and
K. Koval
K. Koval
Published Online: 02 Aug 2012
Page range: 43 - 46

Abstract

Keywords

  • zinc coating
  • electrochemical noise
Open Access

Hydrogen embrittlement of tantalum and tantalum coatings

P. Pokorný,
P. Pokorný,
M. Kouřil,
M. Kouřil,
M. Martínek and
M. Martínek and
S. Eriksen
S. Eriksen
Published Online: 02 Aug 2012
Page range: 47 - 55

Abstract

Keywords

  • tantalum coating
  • hydrogen embrittlement
  • cathodic polarization
Open Access

The impact of a relaxation time on the quality of a pigment layer for a solar collector

M. Zemanová,
M. Zemanová,
J. Petríková and
J. Petríková and
J. Jurišová
J. Jurišová
Published Online: 02 Aug 2012
Page range: 56 - 60

Abstract

Keywords

  • anodized aluminium
  • pigment
  • solar collector
5 Articles
Open Access

Behaviour of creep-resistant steels in a transpassive zone

J. Rapouch and
J. Rapouch and
J. Bystrianský
J. Bystrianský
Published Online: 02 Aug 2012
Page range: 31 - 37

Abstract

Keywords

  • transpassivity
  • high temperature oxidation
  • creep resistant steel
Open Access

The potentiodynamic polarization using PIGE - testing of a method that helps identify historical metallic materials

J. Švadlena and
J. Švadlena and
J. Stoulil
J. Stoulil
Published Online: 02 Aug 2012
Page range: 38 - 42

Abstract

The potentiodynamic polarization using PIGE - testing of a method that helps identify historical metallic materials

The potentiodynamic polarization using a paraffin impregnated graphite electrode (abbreviated as PIGE) is an analytical electrochemical method suggested as an alternative to commonly used procedures of identification of historical metallic materials. The principle of the method consists in potentiostatic reduction of a small amount of the sample's corrosion products deposited on a PIGE and subsequent potentiodynamic oxidation of the reduced metals. The obtained potential/current density potentiodynamic curve is the starting point for determination of a metal present in the alloy (based on peaks' positions on the curve). The aim of the study was to test the methodology for identification of historical metallic materials and to monitor parameters that might impact the results of the analysis (polarization rate, size of particles, electrolyte de-aeration). The study also aimed to test suitability of the method for a quantitative analysis. Having applied the procedure on selected samples of alloys (solder and copper alloys), traces of silver, copper, tin and lead were identified in the samples, however, the possibility of using the method for quantitative analysis was not proven.

Keywords

  • restoration
  • electrochemical analysis
Open Access

Corrosion monitoring of an active/passive state of Zn coatings

M. Halama,
M. Halama,
D. Jerolitsch and
D. Jerolitsch and
K. Koval
K. Koval
Published Online: 02 Aug 2012
Page range: 43 - 46

Abstract

Keywords

  • zinc coating
  • electrochemical noise
Open Access

Hydrogen embrittlement of tantalum and tantalum coatings

P. Pokorný,
P. Pokorný,
M. Kouřil,
M. Kouřil,
M. Martínek and
M. Martínek and
S. Eriksen
S. Eriksen
Published Online: 02 Aug 2012
Page range: 47 - 55

Abstract

Keywords

  • tantalum coating
  • hydrogen embrittlement
  • cathodic polarization
Open Access

The impact of a relaxation time on the quality of a pigment layer for a solar collector

M. Zemanová,
M. Zemanová,
J. Petríková and
J. Petríková and
J. Jurišová
J. Jurišová
Published Online: 02 Aug 2012
Page range: 56 - 60

Abstract

Keywords

  • anodized aluminium
  • pigment
  • solar collector