This section of the article covers the nature of high-temperature oxidation, including enabling theories and various aspects of metal and alloy oxidation. It discusses the oxidation of pure metals, mixed gas corrosion, and the oxidation of alloys in different phases. The text also explores specific types of corrosion, such as those caused by sulfur, carbon, and CO2, as well as the effects of water vapor on oxidation. Additionally, it examines corrosion in complex environments and cyclic oxidation, providing insights into alloy design.This section of the article covers the nature of high-temperature oxidation, including enabling theories and various aspects of metal and alloy oxidation. It discusses the oxidation of pure metals, mixed gas corrosion, and the oxidation of alloys in different phases. The text also explores specific types of corrosion, such as those caused by sulfur, carbon, and CO2, as well as the effects of water vapor on oxidation. Additionally, it examines corrosion in complex environments and cyclic oxidation, providing insights into alloy design.