Transition metal chalcogenide-carbonyl iron powder composite microwave absorbent and preparation method thereof

The invention discloses a transition metal chalcogenide-carbonyl iron powder composite microwave absorbent and a preparation method thereof. The composite microwave absorbent is mainly composed of transition metal chalcogenide flakes and carbonyl iron powder, wherein the chemical formula of the transition metal chalcogenide is AB2; A is Mo, W or Ti; B is S, Se or Te. The preparation method comprises the following steps: mixing coarse transition metal chalcogenide powder with an organic solvent; preparing the transition metal chalcogenide flakes by a liquid phase ultrasonic stripping method; then mixing the transition metal chalcogenide flakes with the carbonyl iron powder to obtain the composite microwave absorbent. The composite microwave absorbent provided by the invention can effectively increase the microwave absorption peak, broaden the microwave absorption frequency band, and greatly reduce the matching thickness, and is an ideal high-performance microwave absorbent. 本发明公开了种过渡金属硫族化物-羰基铁粉复合微波吸收剂及其制备方法。复合