에너지/환경 : 질산망간의 건식-복사열분해 온도에 따른 탄탈륨 콘덴서 특성 연구 = Energy/Environment : A Study on the Characteristics of Tantalum Condenser over the Pyrolysis Temperature of Manganese nitrate by using a Dry-Radiational Furnace

다국어 초록 (Multilingual Abstract)

The characteristics of manganese dioxide(MnO_2) layer for the solid electrolyte of trantalum condenser formed in accordance with its pyrolysis temperature by a dry-radiational pyrolysis instead of a traditional wet-convectional pyrolysis of manganese nitrate was studied. As a result of TG/DSC analysis, manganese nitrate was started to be pyrolyzed at the temperature range from 180 to 230℃ through dehydration process and was transformed into MnO_2 single phase at the temperature range form 230 to 250℃. Trantalum pellets were pyrolyzed at intervals of 20℃ from 200 to 300℃ in a radiational furnace on the basis of TG/DSC results and then re-anodized. There were nothing particular physical problems on the dielectric layer after pyrolysis. The condensers pyrolyzed between 240 and 260℃ recorded better properties like as a higher withstanding voltage and a lower leakage current. According to the impedance and SEM analysis results on the tantalum condenser pyrolytically ide layers were forned by a dry-radiational pyrolysis and its properties like as capacitance, dissipation factor, internal resistance and frequency dependency were improved with the increase of the pyrolysis temperature.