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为使钡铁氧体粉末具有红外隐身性能,采用化学镀工艺在钡铁氧体表面镀Ni-P合金,系统研究了化学镀制备工艺对钡铁氧体复合粒子红外发射率的影响.得出了镀Ni-P合金的最佳工艺条件为:硫酸镍30g/L,次亚磷酸钠20g/L,柠檬酸钠70g/L,硫酸铵50g/L,反应温度85℃,pH值为10.0.借助于XRD、SEM等分析测试手段对样品的晶体结构、粒径及表面形貌进行了表征,利用FT-IR的漫反射系统以及矢量网络分析仪对材料的红外发射率和微波吸收性能进行了测试,结果表明:钡铁氧体表面包覆了完整的Ni-P合金镀层;钡铁氧体复合粒子在8~14μm的红外发射率最低降至0.5910,在2~18GHz频段内最大反射率为-24.3dB,大于-10dB的吸收频带宽约2.8GHz,具有良好的红外和微波隐身性能;钡铁氧体复合粒子有望实现红外-微波一体化隐身.

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