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Advancement of Technologies for Preparing High-Performance Aluminide Coatings
Pages: 105-109
Year: Issue:  21
Journal: Aeronautical Manufacturing Technology

Keyword:  Aluminide coating“Green” techniqueIon-irradiationTurbine blade;
Abstract: Aluminide coatings is one key for protecting hot sections of turbine engines against high temperature oxi-dation at present, which will also be an essential technique for developing advanced turbine engines in the near future. Con-ventional techniques for preparation of the coatings are commonly based on chemical vapor methods, which are dififcult for obtaining high performance aluminide coatings except for low efifciency, chemical hazards release that induces air pollu-tion and equipment corrosion. High efifcient and “green” techniques would be future trends for obtaining advanced alumi-nide coatings. High efifciency has been achieved by a strategy of mechanical energy-assisted aluminizing in recent years. In the mean time, “green” techniques have been developed by a strategy of combining physical vapor deposition and post high temperature diffusion treatment. By combining the two strategies, high efifcient and “green” aluminizing can be achieved, using ion bombardment energy generated from ionized physical vapors in vacuum. It would be a new effective solution to preparation of advanced aluminide coatings.
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