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Synthesis, Characterization and Physical Properties of Tantalum Pentoxide Reinforced Ni‐Fe Alloy Matrix Nanocomposites
Author(s) -
Chaudhari Alok Kumar,
Singh Vijai Bahadur
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801036
Subject(s) - materials science , diffractometer , nanocomposite , tantalum pentoxide , scanning electron microscope , tantalum , crystallite , composite material , transmission electron microscopy , alloy , indentation hardness , metallurgy , microstructure , nanotechnology
Soft magnetic Ni−Fe/Ta 2 O 5 nanocomposites were synthesized by electro‐codeposition on a copper substrate from an ethylene glycol bath. Formation of the composites, tantalum oxide particle content and structure evolution were investigated using X‐ray diffractometer (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM) and energy dispersive X‐ray analyzer (EDAX). Maximum particle content of the deposits was up to 5.7 wt% and clusters of Ta 2 O 5 particles were found on the coating surface. This appears beneficial for improving the corrosion resistance of the coatings. With increasing current density, relative texture coefficient of the coatings shifted from (111) to (200) and followed (220) crystallographic plane. Although crystallite size was recorded approximately 15 nm in the entire current density range studied, remarkable enhancement in the microhardness of the Ni−Fe/Ta 2 O 5 nanocomposite coatings was noticed (up to 870 HV) owing to reinforcement of ceramic particles.