Electrical Properties of Thick-Film Resistor Prepared by Using RuO2-Glass Composite Powder
RuO2-유리 복합분말을 이용하여 제조된 후막 저항의 전기적 특성 연구
김민식;류성수;
Kim, Min-Sik;Ryu, Sung-Soo;
한국세라믹기술원 엔지니어링세라믹센터;
Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology;
DOI : 10.5695/JKISE.2017.50.5.301
The purpose of this study is to investigate the electrical properties of thick-film resistor (TFR) prepared from $CaO-ZnO-B_2O_3-Al_2O_3-SiO_2$ (CZBAS) glass containing $RuO_2$ particles. $RuO_2$-glass composite powder was made by mixing and melting oxide powders of constituents. For comparison, $RuO_2$ powder was simply mixed with glass powder. $RuO_2$-40wt% glass composite and mixture were dispersed in an organic binder to obtain printable resistor paste and then thick-film was formed by screen printing, followed by sintering at the range between $750^{circ}C$ and $900^{circ}C$ for 10 min with a heating rate of $50^{circ}C/min$ in an ambient atmosphere. $RuO_2$-glass composite sample showed much higher resistance compared to the simple mixed sample. This could be attributed to the difference in conducting mechanism. After sintering at $850^{circ}C$, temperature coefficient of resistance of composite sample was lower than that of simple-mixed sample. TFR with dense and homogeneous microstructure could be obtained by using $RuO_2$-glass composite powder.
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