A three-layer zinc-aluminum-magnesium composite sheet and a preparation method thereof

Through layered structural design and specific processing, the problem of balancing corrosion resistance, high strength and lightweight in zinc-aluminum-magnesium composite panels has been solved, resulting in high-performance zinc-aluminum-magnesium composite panels suitable for structural and protective components in high-end equipment and automotive fields.

CN122402008APending Publication Date: 2026-07-17BAIDUN NEW MATERIAL TECH (JIANGSU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BAIDUN NEW MATERIAL TECH (JIANGSU) CO LTD
Filing Date
2026-04-30
Publication Date
2026-07-17

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Abstract

本申请涉及金属材料技术领域，具体公开了一种三层锌铝镁复合板及制备方法。复合板包括层叠的表层耐蚀功能层、中间层轻量化承载层、界面改性过渡层、基层高强度支撑层和背面防腐保护层，表层和背面防腐保护层含锌、铝、镁、铼，中间层为铝镁硅铜系铝合金，基层为铌钛微合金化低碳高强钢板，界面过渡层为硅烷偶联剂改性锌铝合金粉梯度过渡层。制备方法依次为：双基材前处理与差异化界面改性、真空梯度升压热压预复合、梯度退火矫平、无氧同步活化、一体化热浸镀与原位钝化、无铬钝化封孔。该复合板可用于新能源车电池托盘、光伏支架等，具有耐蚀性强、强度高、轻量化优点；其制备方法工艺衔接有序、可控性强，可稳定高效制备复合板。
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