Effect of annealing temperature on electromagnetic absorption properties of crystalline Fe-Si-Al alloy powder-polymer composites

2007 ◽  
Vol 204 (12) ◽  
pp. 4121-4124 ◽  
Author(s):  
Sung Jae Lee ◽  
Yoon Bae Kim ◽  
Kyung Sub Lee ◽  
Dong Jin Byun ◽  
Sang Woo Kim
Keyword(s):  
Polymer Composites ◽  
Alloy Powder ◽  
Annealing Temperature ◽  
Al Alloy ◽  
Absorption Properties ◽  
Electromagnetic Absorption

Toughened polymer composites with flake carbonyl iron powders and their electromagnetic/absorption properties

2013 ◽  
Vol 551 ◽  
pp. 677-681 ◽  
Author(s):  
Zhenjiang Song ◽  
Jianliang Xie ◽  
Peiheng Zhou ◽  
Xin Wang ◽  
Tao Liu ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Carbonyl Iron ◽  
Absorption Properties ◽  
Iron Powders ◽  
Electromagnetic Absorption

Electromagnetic Absorption Behaviors of Ferromagnetic Fe-Cr Alloy Powder and Polymer Composites in the Radio Frequency Range

2007 ◽  
Vol 544-545 ◽  
pp. 299-302
Author(s):  
Sang Woo Kim ◽  
Sung Jae Lee
Keyword(s):  
Radio Frequency ◽  
Polymer Composites ◽  
Metal Powder ◽  
Magnetic Permeability ◽  
Power Loss ◽  
Annealing Temperature ◽  
Metal Powders ◽  
Frequency Range ◽  
Electromagnetic Absorption ◽  
Alloy Metal

In order to achieve effectively high electromagnetic absorption in the radio frequency for the application of the electromagnetic absorber, we investigated annealing effect of microforged powders on electromagnetic absorption behaviors of ferromagnetic Fe-Cr alloy metal powder-polymer composites. The power loss in the far field regime was improved with increasing the microforging time in the frequency range from 50 MHz to near 1 GHz, because the magnetic permeability was slightly increased in the frequency range due to the high aspect ratio of the microforged metal powders. At higher frequency more than ~1 GHz, there was no further increased in power loss because of development of internal strain during microforging process. The magnetic permeability was significantly increased with annealing temperature due to the reduction of the lattice strain of the microforged powders. As a result, the electromagnetic absorption of ferromagnetic Fe-Cr alloy metal powder-polymer composites was highly improved.

Nitride Dispersion Strengthened Steel Development after Sintering of Nitrided Fe‐4.6 at.% Al Alloy Powder

2021 ◽  
Author(s):  
Akeshwar Singh Yadav ◽  
Philipp Kürnsteiner ◽  
Eric A. Jägle ◽  
K.N. Sasidhar ◽  
Sai Ramudu Meka
Keyword(s):  
Alloy Powder ◽  
Al Alloy
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