| In modern information warfare, detection and guidance technology develops rapidly. Among the detection signals, detection
by radar microwave accounts for up to 60%, so the radar stealth capability of weapons and equipment is particularly important. With the
performance improvement of the new generation military equipment, the service temperature of the hot components continues to rise, which
puts forward more stringent requirements for high-temperature microwave absorbing coatings. In the high-temperature service environ‐
ment, some microwave absorbing materials have problems with oxidation and low curie temperature, which lead to the loss of absorbing
performance. Therefore, microwave absorption materials for high-temperature applications mainly rely on dielectric loss and conductance
loss mechanisms. Based on this, the paper discusses the research progress of microwave absorbing coatings materials including carbides,
borides, oxides, metal materials, and MAX phase materials, and analyzes the advantages and problems of each material. Among them, oxide
absorbing agents have good high-temperature stability, are easy to prepare, and have low costs. Their absorbing performance can be
controlled by doping modification, making them more promising absorbing materials for future more stringent service environments. In addi‐
tion, the influence of coating structure design on expanding its microwave absorbing frequency band from the perspectives of gradient
structure and metamaterial is discussed. Combined with the current research progress, it is proposed that the research and development of
new materials, new structure design, and fabrication techniques suitable for material structures are the development direction of high-
temperature microwave absorbing coatings. |