发明授权
- 专利标题： Rare earth doped zinc oxide varistors
- 专利标题（中）： 稀土掺杂氧化锌压敏电阻
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申请号： US932948申请日： 1997-09-17
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公开(公告)号： US5854586A公开(公告)日： 1998-12-29
- 发明人: April D. McMillan , Frank A. Modine , Robert J. Lauf , Mohammad A. Alim , Gerald D. Mahan , Miroslaw Bartkowiak
- 申请人： April D. McMillan , Frank A. Modine , Robert J. Lauf , Mohammad A. Alim , Gerald D. Mahan , Miroslaw Bartkowiak
- 申请人地址： TN Oak Ridge
- 专利权人： Lockheed Martin Energy Research Corporation
- 当前专利权人： Lockheed Martin Energy Research Corporation
- 当前专利权人地址： TN Oak Ridge
- 主分类号： H01C7/112
- IPC分类号： H01C7/112 ; H01C7/10
摘要：
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.