Abstract

The application of a high magnetic field during pack aluminization process induced a significant change in the final products at the surface of substrate Cu. Experimental studies demonstrated that the coatings consisted of two layers namely α + γ 2 and α with the magnetic flux density ( B) ranging from 0 to 8.8 T, whereas only α layer with Kirkendall voids was observed in case of B ≥ 10 T. With B increasing, the total thickness of coating first increased to a maximum at a field of 6.6 T, and then decreased with further increasing magnetic flux density. These results may be attributed to the contradictory effects of high magnetic fields on chemical reaction and on diffusion.

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