0Cr18Ni9不锈钢基板的BAS系微晶玻璃介质层的研制  

Research of dielectric coatings for 0Cr18Ni9 stainless steel substrate prepared by BaO-Al_2O_3-SiO_2 glass-ceramics

作　　者：芦玉峰[1,2] 楼淼[1] 邓利蓉[1] 刘振兴[1] 张传禹[2] 堵永国[2] 

机构地区：[1]西北核技术研究所,陕西西安710024 [2]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《功能材料》2010年第12期2216-2219,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2004AA32G090)

摘　　要：通过开展BAS微晶玻璃成分优化研究,研制了0Cr18Ni9不锈钢基板的大功率厚膜电路介质层。在BAS系玻璃中加入适量MgO和CaO,在降低烧结温度的同时提高了析晶温度,抑制了晶体相的析出,有助于介质层的烧结致密化。利用成分优化后的BAS系玻璃制备的介质层与不锈钢基板结合强度高,具有优良的抗机械冲击能力。最佳配方的介质浆料经过3个烧结周期,制得介质层膜厚>100μm,击穿电压>2.1kV,泄漏电流<0.01mA。部分成果已经用于合作单位的工业化生产。The nonstoichiometric BAS glass-ceramics doped with ZrO2 were employed to prepare thick film dielectric coatings on 0Cr18Ni9 stainless steel substrate.MgO and CaO is able to decrease the sintering temperature as well as increase the crystallization temperature of the BAS glass-ceramics,and thus restrain the crystallization.As a result,the sintering processability is obviously modified.The binding ability between 0Cr18Ni9 stainless steel substrate and dielectric coating can bear 10 times mechanical shocks based on GB2633.The coating can meet the requirement of thick film circuit for multilayer co-firing technology after 3 sintering cycles,with coating thickness higher than 100μm,breakdown voltage higher than 2.1kV and leakage current less than 0.01mA.Some results from the present work have been applied into production of the cooperating company.

关 键 词：微晶玻璃 钡长石 介质层 0Cr18Ni9不锈钢 基板 烧结 

分 类 号：TG171.1[金属学及工艺—金属表面处理]