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| Advancement of Technologies for Preparing High-Performance Aluminide Coatings |
| SHEN Mingli, ZHU Shenglong |
| ( Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) |
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Abstract Aluminide coatings is one key for protecting hot sections of turbine engines against high temperature oxidation
at present, which will also be an essential technique for developing advanced turbine engines in the near future. Conventional
techniques for preparation of the coatings are commonly based on chemical vapor methods, which are difficult for
obtaining high performance aluminide coatings except for low efficiency, chemical hazards release that induces air pollution
and equipment corrosion. High efficient and “green” techniques would be future trends for obtaining advanced aluminide
coatings. High efficiency 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 efficient 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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2016, 
