The overall goal of this thesis is the development of a chromate-free self-healing corrosion protection system. The concept of the approach is based on inhibited sol-gel coatings as a pre-treatment and inhibitor loaded microcapsules incorporated in the paint film. The objectives are the design, development, application and validation of this new protection concept.
The results obtained by electrochemical measurements are in agreement with standard accelerated corrosion test methods and are valid for the evaluation of the protection efficiency of hybrid sol-gel films. The stabilisation of the interface in the new protection system is found to be superior compared to conventional chemical conversion coatings as well as commercially available sol-gel coatings. The capsule doped primer accomplishes the active corrosion protection of macroscopic mechanical defects. The performance in conventional tests almost reaches the level of a chromate loaded primer.
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The overall goal of this thesis is the development of a chromate-free self-healing corrosion protection system. The concept of the approach is based on inhibited sol-gel coatings as a pre-treatment and inhibitor loaded microcapsules incorporated in the paint film. The objectives are the design, development, application and validation of this new protection concept.
The results obtained by electrochemical measurements are in agreement with standard accelerated corrosion test methods and are vali...
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