Iris Publishers - Modern Concepts in Material Science (MCMS)
Plasma Electrolytic Oxidation Coatings on
Aluminum Alloys: Microstructures, Properties, and Applications
Material Science
The
aerospace industry demands that the materials used for making aircrafts meet
the required specifications of increased resistance to fatigue and corrosion,
improved fracture toughness, and have high strength-to-weight ratio because of
their condition of service [1,2]. Aluminum and its alloys have been the primary
choice of materials in the aerospace industry since the late 1920s. Today they
constitute about 70-80% of many modern aircrafts due to their high
strength-to-weight ratio, easy workability, and low prices [3-6]. For example,
aircrafts such as Airbus A340/A330 and Boeing 757 have their major components
and load bearing structures made of aluminum alloys [7]. Although polymer
composites have emerged as competitive materials in the manufacturing of
aircrafts, aluminum and its alloys remain the most widely used materials in the
aircraft industry, as shown in Figure 1.
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