Wettability of zirconium diboride ceramics by Ag, Cu and their alloys with Zr.

Sintered ZrB2 ceramics, pure and with 4wt% Ni as sintering aid, have been tested in contact with liquid Ag, Cu, Ag-Cu and Ag-Cu-Zr. “Pure” ZrB2 ceramics are wetted by Ag-Zr alloys, and ZrB2/Ni ceramics also by pure Cu. The wetting behaviour is briefly discussed in terms of existing wetting theories