Fabrication of Ti–Al Micro/ Nanometer-Sized Porous Alloys through the Kirkendall Effect


  • This work was supported by the 973 program (No. 2003CB615702) and NSF of China, the Australian Research Council and the U.S. Department of Energy.


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A new method based on the Kirkendall effect is developed to fabricate Ti–Al porous alloys with open pores and adjustable pore size. This novel porous material (microstructures shown in the figure) has excellent pore size stability and outstanding corrosion and oxidation resistance. These exceptional advantages of fabricated Ti–Al porous alloys make them an ideal filtration candidate for rugged environments.