TEM STUDIES OF THE MICROMECHANISMS OF SOLID STATE REACTIONS IN Ni-Zr BULK DIFFUSION COUPLES U. KÖSTER, R. PRIES, G. BEWERNICK, B. SCHUHMACHER et M. BLANK-BEWERSDORFF J. Phys. Colloques, 51 C4 (1990) C4-121-C4-130 DOI: 10.1051/jphyscol:1990414