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Anticorrosion and Antifouling Coating Materials

生物污染 涂层 材料科学 复合材料 化学 生物化学
作者
N. Haridharan,Rakesh Kumar
标识
DOI:10.1002/9781394234318.ch12
摘要

Over the past few decades, metallic equipment has seen widespread use in marine infrastructure and applications. However, pristine metallic surfaces are highly susceptible to contamination from marine fouling and corrosion, brought about by interactions with marine water, bacteria, and other organisms. The presence of microorganisms on these surfaces triggers corrosion reactions due to changes in pH and the presence of oxygen. Fouling and corrosion pose significant challenges for maritime industries, leading to structural failures, increased fuel consumption, and high maintenance costs. To address these issues and enhance the efficiency of marine-related activities, the marine-shipping industry has focused on developing innovative metallic components and infrastructure. One approach involves altering the metal surface with protective coatings that serve a dual function of preventing fouling and corrosion. This chapter discusses recent advancements and challenges in designing such materials in four distinct sections. The final section explores future developments and acknowledges critical limitations. The first section outlines the requirements for new antifouling and anti-corrosion materials. It underscores the drawbacks of using bare metallic components in marine applications and emphasizes the need for novel materials. The section also highlights the detrimental effects of marine organisms and salty water on marine infrastructure and discusses the benefits of protective coatings. In the second section, key issues in formulating anti-corrosive materials are examined. Challenges in creating effective inhibitors are discussed, as many materials fail to demonstrate optimal inhibitory properties. Additionally, factors influencing the lifespan of protected metals, such as leaching, are explored. The third section explores modeling and optimization techniques for antifouling and anti-corrosive coatings. By utilizing modeling, researchers can reduce the need for extensive experimental work and predict coating behavior under various conditions. The section also addresses strategies for controlling microorganism release rates. In the fourth section, the focus shifts to the development of new nanomaterials and oxide thin films for enhanced antifouling and anti-corrosive properties. The discussion covers the non-toxicity, biocompatibility, and photochemical stability of nanomaterials, as well as their ability to combat bacteria and corrosion. Additionally, the section examines the influence of physical and chemical parameters on the efficacy of nanomaterials. Finally, the fifth section provides a summary of current advancements and future prospects in the field. It explores ways to mitigate critical limitations through adaptive methodologies, ensuring continued progress in combating fouling and corrosion in marine environments.
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