摘要
本文研究了MnO加入量对SrTiO3压敏电阻器组织性能的影响。通过金相显微组织的观察,发现当MnO加入量达到0.1mol%时,压敏电阻晶粒尺寸比较大,且均匀致密。而对电性能的测试发现,压敏电压(E10、E1)、非线性系数α、损耗tgδ也是在MnO加入量达到0.1mol%时处于最低值,此时E10为5.09V,E1为3.42V,α为5.79,tgδ为0.38,电容量C却在此时取最大值,为105.21nf。同时还研究了压敏电阻器的焊接变化率,发现ΔE10、Δα都比较小,由此可见,焊接前后的性能比较稳定。
An extensive investigation was carried out on the effects of MnO content on the properties and microstructure of the SrTiO3 pressure sensitive varistor.The microstructures were observed by using an optical microscope.The maximum grain size was found for the sample with 0.1mol% MnO.And the microstructure is homogeneous and compact.On the other hand,the electric measurements show that the pressure sensitive voltages（E10,E1）,nonlinear coefficient（α） and loss（tgδ） reach to the minimal values（E10=5.09V,E1=3.42V,α=5.79,tgδ=0.38）,but capacitance gets the maximal value（C=105.21nf） when the content of MnO is 0.1mol%.And ΔE10 or Δα,the differences before and after welding,are small enough,showing the good welding performance.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2009年第5期785-788,共4页
Journal of Materials Science and Engineering
