不同体系低温无铅玻璃在铜端电极浆料中的应用

Application of Low-temperature Lead-free Glass of Different Systems in Copper Terminal Electrode Paste

研究了4种不同体系低温无铅玻璃粉在多层陶瓷电容(MLCC)铜端电极浆料中的应用。通过DSC、SEM等测试玻璃的玻璃化转变温度、析晶温度、烧结特性、耐酸性,并研究了玻璃粉对MLCC力学性能、电性能的影响。4种低温无铅玻璃的玻璃化转变温度不同,适合的烧结温度也有不同。在合适的烧结温度下,4种低温无铅玻璃均可以提供良好耐酸性、致密的端电极表面及合格的端电极附着力和MLCC电性能。2#(B-Zn-Na-Cu)玻璃的综合性能最优,满足MLCC对端电极浆料无铅低温高可靠性的要求。

This paper studies the application of four different systems of low-temperature lead-free glass powder in the copper terminal electrode paste of multilayer ceramic capacitors(MLCC).The glass transition temperature,crystallization temperature,sintering characteristics,and acid resistance of glass were tested by DSC,SEM and other test methods,and the influence of glass powder on the mechanical and electrical properties of MLCC was further studied.The glass transition temperature of the four lowtemperature lead-free glasses is different,and the suitable sintering temperature is also different.At a suitable sintering temperature,the four low-temperature lead-free glasses can provide good acid resistance,dense terminal electrode surface,and qualified terminal electrode adhesion and MLCC electrical properties.2#(B-Zn-Na-Cu)glass powder has the best overall performance and meets the requirements of MLCC for lead-free low temperature and high reliability of terminal electrode paste.