Inventors:
April D. McMillan - Knoxville TN
Frank A. Modine - Oak Ridge TN
Robert J. Lauf - Oak Ridge TN
Mohammad A. Alim - Medina OH
Gerald D. Mahan - Oak Ridge TN
Miroslaw Bartkowiak - Oak Ridge TN
Assignee:
Lockheed Martin Energy Research Corporation - Oak Ridge TN
International Classification:
H01C 710
Abstract:
A varistor includes a Bi-free, essentially homogeneous sintered body of a ceramic composition including, expressed as nominal weight %, 0. 2-4. 0% oxide of at least one rare earth element, 0. 5-4. 0% Co. sub. 3 O. sub. 4, 0. 05-0. 4% K. sub. 2 O, 0. 05-0. 2% Cr. sub. 2 O. sub. 3, 0-0. 2% CaO, 0. 00005-0. 01% Al. sub. 2 O. sub. 3, 0-2% MnO, 0-0. 05% MgO, 0-0. 5% TiO. sub. 3, 0-0. 2% SnO. sub. 2, 0-0. 02% B. sub. 2 O. sub. 3, balance ZnO.
