Thermal wear refers to the degradation of materials due to high temperatures during their operation. This phenomenon is common in mechanical components, such as those found in engines or turbines, where heat can cause changes in material properties, leading to reduced performance and lifespan. The process of thermal wear can result in surface damage, such as cracking or erosion, which can compromise the integrity of the component. Regular maintenance and the use of heat-resistant materials can help mitigate the effects of thermal wear, ensuring that systems like automobiles and industrial machinery operate efficiently over time.