High temperature anti-oxidation and filtration behavior of micro/nano-scale porous CoAl intermetallic synthesized via rapid thermal explosion

The micro/nano-scale porous CoAl intermetallic compound (IMC) was fabricated using thermal explosion (TE) method combining space holder. By investigating the samples with 3D-XRM, the link between the structure of the pores and the permeability performance of the product was established. Oxidative corrosion tests were per-formed in static air at 600 degrees C for 120 h. There are two stages of corrosion: in the first four hours of the oxidation experiment, the reaction of O was mainly dominated; after that, the diffusion of Al was dominated. This structure-function integrated porous CoAl will create a new pathway for industrial-scale high-temperature oxygenated gas filtration works.

Automated summary

The micro/nano-scale porous CoAl intermetallic compound (IMC) was fabricated using the thermal explosion method combining space holder. The link between the structure of the pores and the permeability performance of the product was established through 3D-XRM analysis. Oxidative corrosion tests were conducted at 600 degrees C for 120 hours in static air, revealing two stages of corrosion dominated by O reaction and Al diffusion. This integrated porous CoAl structure-function will provide a new pathway for industrial-scale high-temperature oxygenated gas filtration.