Development of High-Temperature Corrosion-Resistant Coatings for Superalloy Components

Thesis Abstract

Abstract
The demand for materials that can withstand high-temperature environments while resisting corrosion has been steadily increasing in various industries, particularly in aerospace, power generation, and automotive sectors. Superalloys are known for their exceptional mechanical properties at elevated temperatures; however, they are susceptible to corrosion, which limits their performance and lifespan in aggressive environments. One approach to mitigate this issue is the development of high-temperature corrosion-resistant coatings for superalloy components. This thesis focuses on investigating the synthesis, characterization, and performance evaluation of such coatings to enhance the durability and reliability of superalloy materials. Chapter 1 provides the foundation for the study, starting with an introduction to the significance of high-temperature corrosion-resistant coatings for superalloy components. The background of the study highlights the challenges faced by superalloys in corrosive environments, leading to the problem statement that emphasizes the need for effective protective coatings. The objectives of the study are outlined to guide the research process, while the limitations and scope of the study delineate the boundaries and focus areas. The significance of the study underscores the potential impact of developing advanced coatings on the industrial applications of superalloys. The structure of the thesis and definition of key terms set the framework for the subsequent chapters. Chapter 2 presents a comprehensive literature review on high-temperature corrosion mechanisms, superalloy properties, types of protective coatings, coating deposition techniques, and previous research on corrosion-resistant coatings for superalloys. The review of existing knowledge forms the basis for the research methodology in Chapter 3, which includes the selection of materials, coating synthesis techniques, characterization methods, corrosion testing procedures, and data analysis techniques. The detailed methodology ensures the reliability and reproducibility of the experimental results. Chapter 4 elaborates on the findings obtained from the experimental investigations, including the microstructural analysis of coatings, corrosion resistance evaluation, adhesion strength testing, and thermal stability assessments. The discussion interprets the results in the context of the research objectives, highlighting the effectiveness of different coating formulations and deposition methods in enhancing the corrosion resistance of superalloy components at high temperatures. The implications of the findings for industrial applications and future research directions are also addressed. Chapter 5 concludes the thesis by summarizing the key findings, reiterating the contributions to the field of materials engineering, and reflecting on the significance of developing high-temperature corrosion-resistant coatings for superalloy components. The conclusions drawn from the research outcomes are discussed, along with recommendations for further studies to advance the field of materials science and engineering. In conclusion, this thesis contributes to the development of innovative solutions for enhancing the performance and longevity of superalloy components in high-temperature and corrosive environments. The research outcomes provide valuable insights into the design and optimization of protective coatings, with implications for a wide range of industries requiring materials with superior resistance to corrosion at elevated temperatures.