Microwave absorption properties of one thin sheet employing carbonyl–iron powder and chlorinated polyethylene

Synthesis and microwave absorbing properties of FeCo alloy particles/graphite nanoflake composites

“…However, the performance of FeCo-GNFs annealed at 450 • C and 600 • C are much better, especially the one at 450 • C, which shows the reflection loss of −30.6 dB at 7.4 GHz. More importantly, this absorbing peak locates in the lower frequency band (2)(3)(4)(5)(6)(7)(8) and the maximum absorption is much stronger than that in the similar studies as reported previously [11][12][13][14]. According to the SEM and TEM results, the size of FeCo particles in the sample annealed at 450 • C is much smaller than in the one annealed at 600 • C. The average particle size of the sample with ratio of Fe:Co = 2:1 annealed at 450 • C is about 100 nm, while that of the sample annealed at 600 • C is over 200 nm.…”

“…The usual radar frequency band locates at 2-18 GHz and it is usually difficult to obtain an effective absorption in the lower frequency range, especially in 2-4 GHz with thin coating thickness. In this range, some kinds of ferrites and Fe-based materials have demonstrated great absorbing performance [1][2][3][4][5][6][7]. However, they still have some drawbacks, such as high density and requiring high mass filling percentages, which are usually over 60 wt%, or even 90 wt%.…”

Microwave Absorbing Characteristics of Asphalt Mixes With Carbonyl Iron Powder

“…In view of CIP, Liu et al's study suggested that it could be applied as microwave absorbers in 2.0 ∼ 4.0 GHz, in which the absorbing properties of the materials were improved [17]. For an asphalt pavement structure, microwave heating depth can be calculated as formula (10)…”

Effect of Powder Morphologies on the Property of Conductive Silicone Rubber Filled with Carbonyl Nickel Powder

“…They can absorb and attenuate the incident electromagnetic waves, then crunch the electromagnetic energy into heat energy, or weaken the electromagnetic waves' interference. [8][9][10] Carbonyl iron powders and carbonyl nickel powders have been applied in the electronic industry as magnetic fillers due to their high saturation magnetization, superior stability, and enhanced dispersion. [11][12][13][14] Recently, it has been proved that the different morphology of carbonyl iron powder can influence the electromagnetic properties of the polymer filled with the powder.…”