Si3N4覆铜基板的界面空洞控制技术

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为满足新一代SiC基功率模块的先进封装需求,研究了Si3N4覆铜活性金属焊接(AMB)基板的界面空洞控制技术,使Si3N4陶瓷与铜箔界面处的空洞率低于1%。选用Ag-Cu-Ti活性金属焊片作为Si3N4覆铜基板的焊料层,其中的活性组分Ti可与Si3N4生成界面反应层TiN,该材料是界面空洞控制的关键。在分析界面空洞形成机理的基础上,
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