Liquid metal penetration at grain boundaries: Characterization by synchrotron radiation micro-radiography and micro-fluorescence W. Ludwig, D. Bellet, J. Teyssier, J. Ouillier, N. Marie, K. Wolski, A. Simionovici et C. Rau J. Phys. IV France, 12 8 (2002) 289-298 DOI: 10.1051/jp4:20020341