Improvement of Ag-Pd alloy electrode by ceramic dopant applied for multilayer electronic ceramic devices

The electrical conductivity and thermal expansion behaviors of ceramic-modi fied 70Ag-30Pd alloy were investigated. The associated data for 70Ag-30Pd a lloy doped with suitable amounts of ceramic powder were firstly provided. T he electrical conductivity of > 1.23 x 10(4) Omega (-1) . cm(-1) possibly a ccepted for extensive application for thick film conductors may be obtained when doped by < 10 wt.% ceramic powder. Moreover, the mismatch of coeffici ents of thermal expansion (CTE) between the ceramic dielectric and the dope d 70Ag-30Pd alloy was obviously reduced particularly at high temperature te rminal. At 900<degrees>C, the CTE of PMZNT ceramic reaches 8.35 x 10(-6)/de greesC and 70Ag-30Pd alloys doped with 10 wt.% ceramic powders have the val ue of 9.56 x 10(-6)/degreesC, markedly compared with 16.01 x 10(-6)/degrees C of pure 70Ag-70Pd alloy. (C) 2001 Elsevier Science B.V. All rights reserv ed.