A microwave-absorbing corrosion-resistant powder material and a preparation method thereof

The invention discloses a corrosion-resistant powder material capable of absorbing microwave and a preparation method thereof, wherein the powder material is a core-shell structure, the core-shell structure comprises a shell and a core, the shell is a mesoporous silicon dioxide layer, the core is magnetic metal particles, a corrosion inhibitor is filled between the shell and the core, and the particle size of the magnetic metal particles is 0.6 1 micron, is iron carbonyl and nickel carbonyl, or a composite of iron carbonyl and cobalt carbonyl, the weight ratio of iron carbonyl to nickel or cobalt is 8: 1 4: 1. The invention can effectively solve the problems of insufficient microwave absorption and deterioration of corrosion resistance of conventional coatings. 本发明公开种能吸收微波的耐腐蚀粉体材料及其制备方法，粉体材料为核壳结构，核壳结构包括外壳和内核，外壳为介孔二氧化硅层，内核为磁性金属颗粒，外壳和内核之间填充有缓蚀剂，磁性金属颗粒粒径为0.6-1微米，为羰基铁和羰基镍，或羰基铁和钴的复合物，羰基铁与镍或钴的重量比为8∶1-4∶1。本发明能够有效解决常规涂层微波吸收不足、耐腐蚀能力劣化的问题。