ABSTRACT
There are many forms of oxidation and corrosion of materials at high temperatures, each of which depends on the material itself, the environment, the temperature, etc. It is not possible to survey the phenomenology and mechanisms of all forms of high-temperature corrosion of materials in a single chapter. The present chapter focuses on the mechanisms of diffusion-controlled growth of scales formed on pure metals in oxidizing gases at elevated temperature (T https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003065678/04e1e17e-1f8d-4014-9fbf-a03fed359c31/content/inline2.tif"/> 300°C). Although this subject is only one small part of the field of high-temperature oxidation and corrosion, it is, in fact, a very important area for investigation. The ultimate goal of most research dealing with high-temperature oxidation and corrosion is the development of materials that form protective scales on their surfaces, thereby ensuring that they are degraded very slowly. Basically, protective surface scales are diffusion barriers between the material and the environment. An understanding of the mechanisms of diffusion-controlled growth of scales is, therefore, fundamental to virtually all investigations of high-temperature oxidation and corrosion. The key features of diffusion-controlled scale growth can be discussed by considerably scale growth on pure metals, which narrows the subject considerably and allows for a fairly complete discussion in one chapter.
