The advancement of durable mechanical systems depends heavily on the development of high-performance materials that can withstand extreme environmental and contact conditions. In particular, due to the large number of complex contacting and moving mechanical assemblies in gas turbine engines, the lifetime of certain structures is limited by the tribological performance of the employed materials and coatings. Materials capable of operating efficiently under these harsh conditions will help overcome many of the challenges ranging from improving durability of the aircraft and premature failure of the components to developing novel gas turbine engines. This talk will provide an overview of material systems used for such tribological interfaces at a wide range of temperatures with the purpose of maintaining wear control and tailoring the friction coefficient. After a general review of aircraft engine tribology, the talk will focus on tribological coatings and materials used to minimize fretting type of wear. A series of studies on the friction and wear behavior of Ni-based and Co-based superalloys at elevated temperatures will be presented. Emphasis will be placed on the correlation between the third body formation process (e.g. oxide layer formation) and the tribological behavior of the superalloys.