铝合金轻质、易于加工,是航空航天电子产品常用的封装材料,使用时需要将其表面做导电氧化处理,以提高其耐腐蚀性和表面硬度,避免磨损后形成颗粒物,从而威胁电子产品的可靠性.由于铝合金腔体气密封装通常采用Nd∶YAG脉冲激光焊接的方式,所以必须考虑导电氧化对其焊接的影响.以某型号铝合金腔体激光焊接样件为研究对象,通过SEM(扫描电镜)微观分析,进行了铝合金具有和不具有表面导电氧化层对Nd∶YAG脉冲激光焊接影响的对比研究.研究结果表明:导电氧化对焊接有某些参数要求,但不会因为导电氧化的存在而对焊接造成破坏性结果.因此,本文认为导电氧化不会对Nd∶YAG脉冲激光焊接带来实质性影响.%Al alloy which has advantages of lightweight and easy machining is commonly used as packaging materials on aeronautics and astronautics electronic products.When using,it need to do the conduct anodizing surface treatment to the Al alloy for improving its corrosion resistance and surface hardness,and avoiding forming particles after wear and tear,and finally reducing the threat of reliability.Because the Al alloy cavity sealing usually use Nd∶YAG pulse laser welding technology,the influence of conduct anodizing on the welding must be considered.To use a type of Al alloy cavity laser melding sample as the object of study,through SEM (scanning electron microscope) microscopic analysis,the comparative study of impact between two kinds of Al alloys with and without surface conductive oxidation on Nd∶YAG pulse laser welding samples was conducted.The results show that the conductive oxide process has parameters requirements on laser welding,but the conductive oxide won't cause destructive consequence on the laser welding.According to this finding,it is thought that the conductive oxide will not bring substantial effect on Al alloy of Nd∶YAG pulse laser welding.
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