Porous structure and high electrical resistivity of AlPdRe icosahedral phase

摘要

Mechanism of the strucutre formaiton of hte I-phases,which is requried for complete understanding of the origin of their high electrical resistivikty and preparation fo the high quality samples,is proposed.During annealing within 30 minutes,atomic diffusion of Al and Pd atoms from Al_3Pd phase to Al_0.7Re_0.3 phase occurs and orosity is formed in the Al_3Pd phase.It is supposed that the porosity formaiton results from Kirkendal effect.