抄録
A structural study of the ordered B2-CoZr compound during amorphization reaction by high energy ball milling was done using extended X-ray absorption fine-structure (EXAFS) measurement to discuss the micromechanism of amorphization. The ordered B2-CoZr compound powder was prepared by arc melting and annealing. The mechanical milling was done using a vibrating mill. A change in the radial distribution function, provided by the Fourier transform of EXAFS signal, around the Co atom shows that the Zr atom at the first-nearest neighbor around a Co atom is replaced by Cc atom at the second-nearest neighbor; simultaneously the crystalline structure disintegrates and the amorphization reaction occurs.
