不同形貌Co3O4对氧化锌压敏电阻器电性能的影响OA
Study on the influence of different morphology of Co3O4 on the electrical properties of varistor
为了提高氧化锌压敏电阻的电性能,本文通过一系列测试研究针状和球状Co3O4对压敏电阻器电性能的影响.Co作为改性元素,对提高压敏电阻器的电性能起着重要作用.本文所用的Co由化学共沉淀法制备,针状Co3O4采用99.7％的草酸溶液和分析纯的Co(NO3)2制备而成,球状Co3O4采用食品级的碳酸氢铵和分析纯的Co(NO3)2制备而成.研究发现,掺杂针状Co3O4制成的压敏电阻器在8/20μs波通流能力和工频过电压耐受性能方面优于掺杂球状Co3O4的压敏电阻器.
In order to improve that electrical properties of zinc oxide varistor,this paper conducts a series of tests to study the influence of needle-like and spherical Co3O4 on the varistor. Co,as a modified element,plays an important role in the electrical properties of varistor. The Co used in this paper is prepared by chemical co-precipitation method. Needle-like Co3O4 is prepared from 99.7％ oxalic acid solution and analytically pure Co(NO3)2. Spherical Co3O4 is prepared from food-grade ammonium bicarbonate analytically pure Co(NO3)2. It is found that the varistor doped with needle-like Co3O4 is superior to the varistor doped with spherical Co3O4 in terms of 8/20μs wave current capacity and power frequency overvoltage withstand performance.
马雪丽;何欣
西安市西无二电子信息集团有限公司,西安 710015
氧化锌压敏电阻器形貌化学共沉淀法通流能力能量耐量工频过电压耐受试验
zinc oxide varistormorphologychemical co-precipitation methodflow capacityenergy tolerancepower frequency overvoltage withstand test
《电气技术》 2024 (009)
42-45 / 4
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