High-efficiency “green” aluminizing process for high-temperature alloy blades has been successfully developed

Recently, Shen Mingli, associate researcher of the Shenyang Institute of High-Temperature Protective Coatings of the Chinese Academy of Sciences, has recently developed a subversion of the traditional "green" aluminizing technology, enabling the preparation of advanced aluminide coatings to achieve the same non-toxic gas emission as the vacuum coating, without harmful elemental contamination. Miscellaneous requirements, the coating anti-oxidation performance is superior to the common aluminide coating.

It is reported that high-performance thermal diffusion aluminide coatings, including platinum modified, active element modified aluminide coatings, are one of the main methods for high-temperature corrosion protection of advanced aero-engine and gas turbine turbine blades. However, in the traditional powder-embedding, slurry-diffusion, and gas-phase heat-diffusing aluminide coating preparation techniques, there are stubborn ills of coating harmful element doping and toxic gas release. In response to the above problems, the “green” aluminizing technology developed by the research group is based on the effect of vacuum high-density aluminum plasma irradiation, and it can achieve no harmful effects by enhancing the diffusion mechanism of high-density aluminum ion deposition, injection, sputtering, and irradiation. Highly efficient, controllable, non-toxic gas emissions from element-doped high-performance aluminide coatings.