Corrosion Accelerating Surface Catalysts

Szabó, S.; Bakos, I.

doi:10.1515/corrrev.2002.20.1-2.95

Cited by 9 publications

(9 citation statements)

References 5 publications

(3 reference statements)

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“…In spite of many new results, published in the last decades [18,[21][22][23][24][25][26], in the field of study of the mechanism of metal corrosion, in corrosion protection hardly rely in decisions on the scientific results [1]. Application of scientific results in solution of technologic problems diffuses slowly in the practice.…”

Section: Mechanism Of Corrosion Reactionsmentioning

confidence: 99%

“…For instance, dissolution of platinum accelerated by adsorbed gold, and palladium by adsorbed copper (chloride) was understood long after its industrial application [26]. At the rusting of iron, catalyst of oxygen activation is the already mentioned Fe 2+ containing lepidocrocite [18].…”

Section: Mechanism Of Corrosion Reactionsmentioning

confidence: 99%

“…Not only mercury can perform this effect. There are other metals which can also activate aluminum [28].…”

Section: Basis Of Bimetallic and Multimetallic Corrosionmentioning

confidence: 99%

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Metal corrosion and its relation to other fields of science

Szabó¹

2015

Int. J. Corros. Scale Inhib.

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Metal corrosion is a charge transfer process. Study of corrosion and corrosion protection requires manifold knowledge in he field of thermodynamics, reaction kinetics, catalysis, transport and surface phenomena. Dealloying, biocorrosion, corrosion effects of electric traction and energy systems are also very important scientific fields for understanding corrosion. Study and knowledge of metal corrosion and corrosion protection is a very important field of modern research and development, because everybody experiences metal corrosion who use appliances made of metals. The man met with metal corrosion at the dawn of human civilization, but the methods of corrosion protection have been developed very slowly, mostly experientially [1][2][3][4]. The methods developed experientially, step by step became scientifically grounded technologies, in fact, certain technologies were developed on the basis of scientifictechnological development (for instance, cathodic protection or electroplating, etc.). The scientific development of bases of corrosion protection technologies is still going on, and for this reason, these methods become simpler and more effective.The technologies used in the industry never rely on the results of only one scientific field, but apply more or less the results of every scientific field by which the technical level of a given technology can be increased [2,3]. This is also true for metal corrosion, also.The scientific, technical and common language name the process metal corrosion, the result of which at first the surface, later the bulk of the metals, in a result of spontaneous reactions with materials of the environment, undergo chemical changes, therefore, the metal corrosion is a chemical, moreover a charge transfer chemical process (which is very often called anodic process), consequently, the main point of metal corrosion is the losing electrons of metals:where Me z+ can be any product of metal corrosion, 'z' is charge transfer number. Losing electrons can take place in wet environment, or in gas phase for we talk about only

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Section: Mechanism Of Corrosion Reactionsmentioning

confidence: 99%

Section: Mechanism Of Corrosion Reactionsmentioning

confidence: 99%

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Metal corrosion and its relation to other fields of science

Szabó¹

2015

Int. J. Corros. Scale Inhib.

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“…Under nonaerated conditions of corrosion the electrons liberated are very often consumed in process (10), that is, hydrogen is deposited as a result of metal corrosion. If the theory that hydrogen deposition is a catalytic process is true, then the corrosion rate is influenced by the catalysts affecting reaction (10) [62,[70][71][72]. In the case of metal corrosion, very often the catalyst of reaction (10) is the corroding metal surface itself, but other substances catalysing hydrogen deposition may also get deposited onto the metal surface, for instance, platinum from motor car catalysts.…”

Section: Hydrogen Deposition As the Cathodic Process Of Metalmentioning

confidence: 99%

“…Since cathodic processes (processes (10) and (45)) are catalytic processes, consequently, in the interpretation and case studies of processes of metal corrosion catalytic phenomena cannot be ignored. They must be taken into consideration [62,67,[70][71][72].…”

Section: Hydrogen Deposition As the Cathodic Process Of Metalmentioning

confidence: 99%

Reference Electrodes in Metal Corrosion

Szabó

Bakos

2010

International Journal of Corrosion

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With especial regard to hydrogen electrode, the theoretical fundamentals of electrode potential, the most important reference electrodes and the electrode potential measurement have been discussed. In the case of the hydrogen electrode, it have been emphasised that there is no equilibrium between the hydrogen molecule (H 2 ) and the hydrogen (H + ), hydronium (H 3 O + ) ion in the absence of a suitable catalyst. Taking into account the practical aspects as well, the theorectical basis of working of hydrogen, copper-copper sulphate, mercury-mercurous halide, silver-silver halide, metal-metal oxide, metal-metal sulphate and "Thalamid" electrodes, has been discussed.

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