摘要
将添加质量分数分别为2%、4%、6%和8%的纳米ZnO掺入氧化锌压敏电阻中,利用纳米粒子的高活性阻止界面迁移,增加压敏电阻的晶界界面数,促进阀片的成分均匀化和致密化,有效提高阀片的电位梯度和能量耐受能力。添加的纳米ZnO的质量分数从2%增加至8%时,电位梯度从347 V/mm增加至395 V/mm,同时8/20μS的残压比下降,2 ms方波冲击电流从121 A增加至149 A。
Nano-ZnO doped zinc varistors with volume addition of 2%, 4%, 6% and 8% nano-ZnO were prepared. The high activity of nanoparticles was used to prevent migration of the interface, increase the grain boundary number of interfaces, promote homogenization and densification of the components, improve potential gradient and the energy absorption capacity. When the addition of nano-ZnO increases from 2% to 8%, potential gradient increases from 347 V/mm to 395 V/mm, while 8/20 μS residual voltage ratio decreases, 2 ms square-wave impulse current increases from 121 A to 149 A.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2014年第4期71-73,共3页
Ordnance Material Science and Engineering
