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Research and development of a technology of hard anodization of nonferrous alloys
Remešová, Michaela ; Kudláček,, Jan (oponent) ; Vidal, Salvador Pané (oponent) ; Kaiser, Jozef (vedoucí práce)
The thesis is focused on the research and development of the technological process for the preparation of hard anodic coatings on three different non-ferrous materials, namely (i) aluminium alloy (AA1050), (ii) pure magnesium (99.9% Mg), and (iii) zinc alloy (ZnTi2). Suitable combinations of anodizing conditions (voltage, current density, temperature and composition of the electrolyte, etc.) can produce anodic coatings with different properties. The effect of pre-treatment and anodizing conditions on the appearance, morphology, thickness and hardness of the produced anodic coatings was demonstrated in the present thesis. In order to increase tribological properties and hardness, the anodic coatings were directly doped with Al2O3 or with a mixture of Al2O3/PTFE particles during the anodizing process. The theoretical part describes the basic principles of anodization, the methods used in industry and the technological process. The experimental part is divided into three basic parts. The first part is devoted to anodizing of aluminium alloy. The second part is focused on anodizing of pure magnesium, and the last part is focused on anodizing of zinc alloy, which has not been researched as thoroughly as anodizing of aluminium.
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Research and development of a technology of hard anodization of nonferrous alloys
Remešová, Michaela ; Kudláček,, Jan (oponent) ; Vidal, Salvador Pané (oponent) ; Kaiser, Jozef (vedoucí práce)
The thesis is focused on the research and development of the technological process for the preparation of hard anodic coatings on three different non-ferrous materials, namely (i) aluminium alloy (AA1050), (ii) pure magnesium (99.9% Mg), and (iii) zinc alloy (ZnTi2). Suitable combinations of anodizing conditions (voltage, current density, temperature and composition of the electrolyte, etc.) can produce anodic coatings with different properties. The effect of pre-treatment and anodizing conditions on the appearance, morphology, thickness and hardness of the produced anodic coatings was demonstrated in the present thesis. In order to increase tribological properties and hardness, the anodic coatings were directly doped with Al2O3 or with a mixture of Al2O3/PTFE particles during the anodizing process. The theoretical part describes the basic principles of anodization, the methods used in industry and the technological process. The experimental part is divided into three basic parts. The first part is devoted to anodizing of aluminium alloy. The second part is focused on anodizing of pure magnesium, and the last part is focused on anodizing of zinc alloy, which has not been researched as thoroughly as anodizing of aluminium.
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