Aluminizing is a surface treatment process in which aluminum is diffused into a metal substrate to improve its resistance to high-temperature oxidation, corrosion, and wear. This process involves applying a layer of aluminum onto the metal surface through a variety of methods such as pack cementation, chemical vapor deposition, or thermal spraying. The aluminum diffuses into the metal substrate creating intermetallic compounds which provide enhanced properties to the material. Aluminizing is commonly used in industries such as aerospace, automotive, and power generation to improve the performance and longevity of components exposed to high temperatures and harsh environments.