Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 621, Issue -, Pages 99-103Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.09.163
Keywords
Electrical deposition; Amorphous Ni-Fe-P alloy; Orthogonal test; Manufacturing process
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A flexible shielding fabric with dense uniform coating was prepared after electrical deposition of amorphous Ni-Fe-P alloy on copper-coated polyethylene terephthalate (PET) fabric. The manufacturing process was studied using orthogonal test with 8 factors and 3 levels. The effects of coating composition and the SE were discussed by pH value. The morphology, composition, and structure of coating were analyzed by SEM, EDS, and XRD characterizations. The electromagnetic interference (EMI) shielding effectiveness (SE) was also tested. The results indicate that the processing conditions of electrical deposition amorphous Ni-Fe-P alloy coated fabric are: 140 g/L NiSO4 center dot 6H(2)O, 100 g/L FeSO4 center dot 7H(2)O, 10 g/L NaH2PO2 center dot H2O, 24 g/L C6H8O6, 36 g/L C6H8O7 center dot H2O, 20 g/L H3PO3, 65 degrees C, pH = 1.5, and current density = 13 A/dm(2). The resulting fabric possesses dense, smooth, and uniform coating, which consists of amorphous Ni-Fe-P alloy with 17.04% P (weight percent). The EMI SE of this coated fabric achieves 59.3-70.2 dB, in a broad frequency range between 300 kHz and 1.5 GHz. (C) 2014 Elsevier B.V. All rights reserved.
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