CAJ | 학술논문

采用传统固相反应法制备了Zn掺杂的Ni0.5Mn2.38–xCu0.12ZnxO4(x=0,0.2,0.4,0.6,0.8)系列MF58型NTC热敏电阻工业化产品，使用 XRD、SEM、XPS 等技术手段表征了所制陶瓷烧结体的晶体结构、微观结构和成分，重点考察了 Zn 元素含量对热敏电阻电学性能和老化值的影响。结果表明：随着 Zn 含量的增加， Ni0.5Mn2.38–xCu0.12ZnxO4固溶体的晶体结构从立方尖晶石转变成四方尖晶石，样品的电阻率和热敏常数B值呈现逐步增加的趋势，同时老化值显著减小，当x=0.8时，其在150℃放置6天后的老化值可低至0.33%。
채용전통고상반응법제비료Zn참잡적Ni0.5Mn2.38–xCu0.12ZnxO4(x=0,0.2,0.4,0.6,0.8)계렬MF58형NTC열민전조공업화산품，사용 XRD、SEM、XPS 등기술수단표정료소제도자소결체적정체결구、미관결구화성분，중점고찰료 Zn 원소함량대열민전조전학성능화노화치적영향。결과표명：수착 Zn 함량적증가， Ni0.5Mn2.38–xCu0.12ZnxO4고용체적정체결구종립방첨정석전변성사방첨정석，양품적전조솔화열민상수B치정현축보증가적추세，동시노화치현저감소，당x=0.8시，기재150℃방치6천후적노화치가저지0.33%。
A batch of MF58 type thermistors with the composition of Ni0.5Mn2.38–xCu0.12ZnxO4(x=0, 0.2, 0.4, 0.6, 0.8) were prepared using the conventional solid state reaction method. The phase structures, microstructures and compositions of the prepared ceramics were investigated with the help of XRD, SEM and XPS characterization techniques;meanwhile, the effects of Zn content on the electrical properties and aging values of those thermistors were specially studied. The results show that with the increase of Zn content, the crystal structure of those solid solutions transforms from cubic spinel into tetragonal spinel;the resistivity and B constant of the thermistors increase gradually, and the aging value decreases sharply. After stored at 150℃ for 6 days , the aging value is as low as 0.33%for the Ni0.5Mn1.58Cu0.12Zn0.8O4 thermistor.