The aerospace industry, including size, safety/performance requirements and legislation/government influence. Operating conditions for airframe and aeroengine components. Materials selection criteria for airframe components. Development of airframe materials (including heat treatment) with respect to specific stiffness and strength; fatigue resistance; corrosion fatigue and stress corrosion cracking for natural materials, aliminium-based alloys, polymer matrix composites and titanium-based alloys. Mechanisms of erosion and its avoidance in service. Determination and origins of friction and adhesive and abrasive wear. Lubrication types and surface engineering techniques for increased wear resistance (particularly for steels in shafts, bearings and gears). Operation of gas turbine engines and service requirements. The use of titanium-based alloys in aeroengines, including spuerplastic forming and diffusion bonding; creep and fatigue resistance; and metal matrix composite structures. The development of nickel-based superalloys for turbine blades and discs including processing routes. Application of ceramic and refractory coatings for wear resistance and atmospheric protection at elevated temperatures, including thermal barrier coatings.