GHz microwave absorption of a fine α-Fe structure produced by the disproportionation of Sm2Fe17 in hydrogen

Sugimoto, Satoshi; Maeda, Toru; Book, D. L.; Kagotani, Toshio; Inomata, K.; Homma, M.; Ota, H.; Houjou, Yuji; Sato, Risaburô

doi:10.1016/s0925-8388(01)01504-3

Cited by 169 publications

(107 citation statements)

References 10 publications

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“…4, after CIP addition, the surface temperature of the asphalt mixes evidently increases at a different heating interval time, and it is enhanced by 5 • C and by 83 • C for the ordinary asphalt mixes and CIP absorber/asphalt mixes after 60 s heating interval time, respectively, which suggests that CIP addition is responsible for 16 times of heating rate increase. In addition, microwave heating power is the other key factor influencing heating rate, which can be calculated as in formula (11) (11) where f is microwave frequency, GHz; E m is electromagnetic intensity, V/m; f , E m and ε are not changed easily, but tan δ can be changed, which evidently influences microwave heating power. Formula (11) indicates that it is a key measure to enhance the tan δ, which is effective to transform microwave energy into thermal energy.…”

Section: Heating Rate Of Different Asphalt Mixesmentioning

confidence: 99%

“…In addition, microwave heating power is the other key factor influencing heating rate, which can be calculated as in formula (11) (11) where f is microwave frequency, GHz; E m is electromagnetic intensity, V/m; f , E m and ε are not changed easily, but tan δ can be changed, which evidently influences microwave heating power. Formula (11) indicates that it is a key measure to enhance the tan δ, which is effective to transform microwave energy into thermal energy. Addition of CIP improves electromagnetic loss, which is beneficial to enhancing microwave absorbing rate.…”

Section: Heating Rate Of Different Asphalt Mixesmentioning

confidence: 99%

“…[9,10]. On the other hand, CIP as a metallic magnetic material is a conventional microwave absorbent, which can enhance power microwave efficiency and is widely concerned with due to its higher saturation magnetization and Snoke's limit than ferrites [11,12].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microwave Absorbing Characteristics of Asphalt Mixes With Carbonyl Iron Powder

Wang¹,

Zhao²,

Ai³

et al. 2011

PIER M

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Abstract-Power microwave was adopted to heat asphalt mixes with carbonyl iron powder (CIP) by its microwave absorbing characteristics. The Arch reflectivity system was employed for reflectivity tests in the frequency range of 2.0 ∼ 4.0 GHz, and road properties of the asphalt mixes with different heating techniques were studied. The results indicate that 30 mm thickness of the asphalt mixes with the ratio of CIP absorber to asphalt 0.1 : 1.5, can effectively absorb microwave with a −19.1 dB absorbing peak at 2.45 GHz frequency. Microwave heating rate for asphalt mixes with CIP is 16 times higher than that for ordinary asphalt mixes. Microwave heating can enhance road properties of the asphalt mixes, such as Marshall stability, flow value, dynamic stability and splitting strength at low temperature to a certain extant when the ratio of CIP absorber to asphalt is from 0.1 : 1.5 to 0.3 : 1.5.

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Section: Heating Rate Of Different Asphalt Mixesmentioning

confidence: 99%

Section: Heating Rate Of Different Asphalt Mixesmentioning

confidence: 99%

See 1 more Smart Citation

Microwave Absorbing Characteristics of Asphalt Mixes With Carbonyl Iron Powder

Wang¹,

Zhao²,

Ai³

et al. 2011

PIER M

View full text Add to dashboard Cite

show abstract

“…Examples of such structures include Ba hexaferrite nanocrystals 10 and micron-size ferrite powders 11,12 in a rubber matrix, Fe-Si-Al alloy flakespolymer composites, 13 and CaCoTi ferrite-epoxy composites. 14 Microwave absorption in these materials is thought to be mainly due to magnetic resonance and interfacial electric polarization.…”

Section: Nanoparticle-assisted Microwave Absorption By Single-wall Camentioning

confidence: 99%

Nanoparticle-assisted microwave absorption by single-wall carbon nanotubes

Wadhawan

Garrett

Pérez

2003

Applied Physics Letters

185

128

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Irradiance influence on the multicolor photochromism of mesoporous TiO2 films loaded with silver nanoparticles Appl. Phys. Lett. 99, 173106 (2011) Computational study on structural modification of single-walled carbon nanotubes by electron irradiation J. Appl. Phys. 109, 054304 (2011) Multiwalled carbon nanotubes and dispersed nanodiamond novel hybrids: Microscopic structure evolution, physical properties, and radiation resilience J. Appl. Phys. 109, 014314 (2011) Continuous-wave laser annealing of Si-rich oxide: A microscopic picture of macroscopic Si-SiO2 phase separation

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“…It should be noted that carbon fibers coated with thin Fe films are the best candidate fillers for electromagnetic interference shielding materials. [10][11][12] In the MOCVD process, it is essential to choose a suitable precursor to deposit high-quality thin Fe films. Usually, iron pentacarbonyl, Fe(CO) 5 and iron biscyclopentadienyl, Fe(Cp) 2 , can be used as the Fe source.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Pressure MOCVD of Thin Fe Films on Carbon Fibers

Jun

Luo

Zhang

2007

Chemical Vapor Deposition

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Thin iron films grown on carbon fibers were prepared by atmospheric pressure (AP), metal-organic (MO) CVD, which was conducted under pure hydrogen/argon atmospheres. Their crystalline structures and morphologies were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The film growth and structure, as a function of the deposition temperature, hydrogen gas flow rate, and precursor sublimation rate, were investigated. It was concluded that the optimum control of the three above mentioned process parameters was important and essential for obtaining highquality iron film. Based on these analyses and results, a possible deposition mechanism was proposed.

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GHz microwave absorption of a fine α-Fe structure produced by the disproportionation of Sm2Fe17 in hydrogen

Cited by 169 publications

References 10 publications

Microwave Absorbing Characteristics of Asphalt Mixes With Carbonyl Iron Powder

Microwave Absorbing Characteristics of Asphalt Mixes With Carbonyl Iron Powder

Nanoparticle-assisted microwave absorption by single-wall carbon nanotubes

Atmospheric Pressure MOCVD of Thin Fe Films on Carbon Fibers

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