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4 edition of Microstructural and magnetic characterization of electrodeposited nanocrystalline nickel found in the catalog.

Microstructural and magnetic characterization of electrodeposited nanocrystalline nickel

Abraham Yoo

Microstructural and magnetic characterization of electrodeposited nanocrystalline nickel

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  • 33 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.A.Sc.) -- University of Toronto, 2003.

SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative.
ID Numbers
Open LibraryOL21299190M
ISBN 100612844226
OCLC/WorldCa57062053

Fenineche, N, Chaze, A.M, Coddet, C () Effect of pH and current density on the magnetic properties of electrodeposited Co-Ni-P alloys, Surf. Coat. Technol. 88, – CrossRef Google Scholar Nanocrystalline (nc) Ni films show pronounced grain growth and suffer from concomitant deterioration of their mechanical and magnetic properties after annealing at relatively low temperatures (TANN ≥ K). This constitutes a drawback for their applicability as coatings or in components of miniaturized devices. This work reveals that the thermal stability of nc Ni is significantly improved.   Vuk Uskoković, Miha Drofenik, Irena Ban, The characterization of nanosized nickel-zinc ferrites synthesized within reverse micelles of CTAB/1–hexanol/water microemulsion, Journal of Magnetism and Magnetic Materials, /, , (), (). Nathani H, Misra RDK. Surface effects on the magnetic behavior of nanocrystalline nickel ferrites and nickel ferrite-polymer nanocomposites. Mater Sci Eng B. ; – He X, Song G, Zhua J. Non-stoichiometric NiZn ferrite by sol-gel processing. Mater Lett. ; – doi: /

  Nickel/iron alloys have good mechanical, electrical, and magnetic properties and a high catalytic activity for some electrochemical reactions []. Alloying these alloys with small quantities of tungsten improves their thermal stability, wear resistance, corrosion resistance, microhardness, and high-temperature oxidation [].


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Microstructural and magnetic characterization of electrodeposited nanocrystalline nickel by Abraham Yoo Download PDF EPUB FB2

Synthesis and Microstructural Characterization of Electrodeposited Nanocrystalline Soft Magnets by Cedric K.S. Cheung A thesis submitted to the Department of Materials and Metaiiurgical Engineering in codormity with the requirement for the degree of Doctor of PhiIosophy Queen's University Kingston, Ontario, Canada August, Microstructural Microstructural and magnetic characterization of electrodeposited nanocrystalline nickel book of Electrodeposited Nanocrystalline Nickel Films by X-Ray Diffraction.

Keisuke TANAKA, Yuuki KOIKE, Katsuki SANO, Hiroto TANAKA, Shutaro MACHIYA, Takahisa SHOBU, Hirohisa KIMACHI. Author information Keywords: X-ray profile analysis, Nano-crystalline. Two of the most important properties of a soft magnet are the saturation magnetization (Ms) and the coercivity (Hc).

An ideal soft magnet would have a very high saturation magnetization and a very low coercivity. In recent years, there has been considerable interest in the development of nanocrystalline materials, including magnetic materials.

This is because at grain sizes less than Cited by: 4. Microstructural Characterization of Electrodeposited Nanocrystalline Nickel Films by X-Ray Diffraction. Keisuke TANAKA 1), Yuuki KOIKE 2), Katsuki SANO 2), Hiroto TANAKA 2), Shutaro MACHIYA 3), Takahisa SHOBU 4), Hirohisa KIMACHI 1) 1) Dept.

Mech. Eng., Meijo Univ. 2) Graduate School, Meijo Univ. 3) Dept. Mech. Eng., Daido Univ. 4) Quantum Beam. The results indicated grain boundary mediated deformation of the electrodeposited nanocrystalline nickel.

This Paper was Originally Published in Japanese in J. Japan Inst. Met. Mater. 80 () 7. Magnetic properties of nanocrystalline Ni and Ni-Fe alloys produced by electrodeposition have been studied at 2K and at K. Ni and Ni%Fe alloy deposits show nano-grain structure with the.

Fabrication and characterization of electrodeposited nanocrystalline Ni−Fe alloys for NiFe2O4 spinel coatings Li MA1,2, Long ZHANG 2, Xiao-bing LI1, Zhi-you LI2, Ke-chao ZHOU 1. School of Metallurgy and Environment, Central South University, ChangshaChina; 2. 1. Introduction. Electrodeposited Ni–Fe alloys exhibit promising properties, namely, a high strength and soft magnetic high strength of electrodeposited Ni–Fe alloys results from their nanocrystalline microstructure, according to the Hall–Petch electrodeposited Ni–Fe alloy is a nanocrystalline material system that has been researched extensively.

Acta Materialia 51 () – Deformation of electrodeposited nanocrystalline nickel K.S. Kumar a,∗, S. Suresh a, M.F. Chisholm b, J.A. Horton b, P. Wang c a Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MAUSA b Solid State Division and Metals and Ceramics Division, Oak Ridge National.

Mritunjoy Prasad Ghosh, Samrat Mukherjee, Tuning the microstructural, magnetic and optical properties of Cr substituted nanocrystalline copper-nickel ferrites, Journal of Magnetism and Magnetic Materials, /, (), ().

The strongest ferromagnetic moments observed in the nickel doped samples might be due to the higher magnetic moments of Ni 2+ ions substituting Cu 2+ ions with lower magnetic moment. It is known that the magnetic moments of Cu 2+ and Ni 2+ are and µ B, respectively, in the high spin state [28].

TITLE Magnetic Characterization of Electrodeposited Nanocrystalline Ni and Ni-Fe alloys AUTHOR Sahar Arabi, (IUST), (International University Bremen (Jacobs University)) SUPERVISOR Dr. Marek Niewczas NUMBER OF PAGES: VII, MASTER OF APPLIED SCIENCE () (Materials Engineering) McMaster University Hamilton, Ontario.

Nanocrystalline Ni-Fe deposits with different composition and grain sizes were fabricated by electrodeposition. Deposits with iron contents in the range from 7 to 31% were obtained by changing the Ni 2+ /Fe 2+ mass ratio in the electrolyte.

The deposits were found to be nanocrystalline with average grain size in the range 20&#;30&#x;nm. Apart from good mechanical, tribological and magnetic properties, the electrodeposited Ni-W coatings offer excellent corrosion resistance and electrocatalytic characters [1, 2].

It has been. Using the electrodeposition process, cobalt-iron (Co-Fe) nanocrystalline coatings were successfully synthesized onto stainless steel in deposition times of 30, 60, and 90 minutes. The temperature used throughout the process was 50°C in an acidic environment of pH 3. By changing the deposition time, physical properties such as phase and crystallographic structure, surface morphology, grain.

The microstructural observations made in this study shed light on the plastic behavior of bulk nanocrystalline ceramics and the deformation mechanisms operating during microhardness testing.

The deformed microstructure under the indentation tip was analyzed for nanostructured MAS samples with grain sizes of 43 and 22 nm. Nanocrystalline materials exhibit remarkable structural, electrical, magnetic, and optical properties, which can be exploited in a wide variety of structural and nonstructural applications.

Potential uses have been identified in the automotive, electronic, aerospace, clothing, chemical, fuel, and lubrication industries, with applications ranging from flat panel displays to medical implants.

Iron-Nickel alloys are of great commercial interest as a result of their soft magnetic and thermal expansion properties. A proprietary, high efficiency electrodeposition process has been developed. In the present study, a detailed analysis has been performed to understand the correlation between structure-texture-magnetic properties of electrodeposited Ni–Co electrodeposits.

Experimental Synthesis of nanocrystalline nickel–cobalt alloys. This paper reports the evolution of microstructure and texture in Nickel-Cobalt electrodeposits fabricated by pulse electrodeposition (PED) technique and the correlation of these attributes with the magnetic properties.

The structural and microstructural investigation using X-ray diffraction and transmission electron microscopic studies indicate the presence of nanocrystalline grains and nano. Microstructural evolution during the heat treatment of nanocrystalline alloys - Volume 22 Issue 11 - A.J.

Detor, C.A. Schuh. A clear transition from soft to hard magnetic character is observed with an increase cobalt content. Abstract This paper reports the evolution of microstructure and texture in Nickel–Cobalt electrodeposits fabricated by pulse electrodeposition (PED) technique and the correlation of these attributes with the magnetic properties.

Nanocrystalline nickel and nickel-copper alloys: Synthesis, characterization, and thermal stability - Volume 13 Issue 5 - H. Natter, M. Schmelzer, R. Hempelmann Please note, due to essential maintenance online purchasing will not be possible between and BST on Sunday 6th May.

Characterization of the phase composition and structure of electrodeposited nanostructured magnetic Ni-Fe alloys for different electrodeposition processes Ingrda Vtia et al-This content was downloaded from IP address on 26/06/ at CoFeNi alloys are some of the most studied soft magnetic materials because of their superior properties over FeNi alloys as write head core materials in hard-disk-drives.

Electroplating processes have major significance in the fabrication of thin-film recording heads due to their advantages of simplicity, cost-effectiveness, and controllable patterning. Conventional low pH (−) baths. Zhilyaev et al.: Microstructural characterization of ultrafine-grained nickel where Ch00 is the average dislocation contrast factor for the h00 reflections and q is a parameter depend- ing on the elastic constants of the crystal and on the character of dislocations (e.g., edge or screw type).

Journal of The Electrochemical Society, (3) DD () D Characterization of Defect Structure in Electrodeposited Nanocrystalline Ni Films Tam as Kolonits,´ a,z P´eter Jenei, bBence G.

Toth,´ c Zsolt Czigany,´ a Jeno Gubicza,˝ Laszl´ ´oP ´eter, c and Imre Bakonyic aInstitute for Technical Physics and Materials Science, Centre for Energy Research, Hungarian Academy of Sciences. K.T. Aust's research works with 8, citations and 8, reads, including: Magnetic and interface microstructure contribution to bulk specific heat of nanocrystalline Ni-P alloy.

resistance of electrodeposited nanocrystalline nickel compared to coarse-grained counterparts has been reported [5,]. Superhydrophobic nanostructured surfaces which produce the so-called lotus-effect can also be achieved by electrodeposition of Ni [28]. The microstructure and grain size refinement in electrodeposited nickel can be.

Nickel nanopillar arrays were electrodeposited onto silicon substrates using porous alumina membranes as a template. The characterization of the samples was done by scanning electron microscopy, X-ray diffraction, and alternating force gradient magnetometry.

Ni nanostructures were directly grown on Si by galvanostatic and potentiostatic electrodeposition techniques in three. The magnetic properties of nanocrystalline hard magnetic and soft magnetic are summarized.

Z Shen, Densification and preservation of ceramic nanocrystalline character by spark plasma sintering, Advances in Applied Ceramics, 10 Christopher A. Schuh, Residual stress in electrodeposited nanocrystalline nickel-tungsten coatings, Journal of.

The growing interest in nanocrystalline (nc) materials is driven by their outstanding combination of mechanical and functional properties. Electrodeposited nc Ni–Fe alloys have received considerable attention, thanks to their unique strength and to their thermal and magnetic properties.

However, the research on the relationship between microstructure, mechanical properties and fracture. Ni-W electrodeposited coatings: Characterization, properties and applications.

Surface and Coatings Technology, Vol.Issue., p. Tunable negative permittivity in nano-carbon coated magnetic microwire polymer metacomposites An in-situ synchrotron study on microplastic flow of electrodeposited nanocrystalline nickel.

Materials. [9] S. Teh and I. Yaacob, "Synthesis and characterization of Co-Fe nanocrystalline magnetic films electrodeposited from electrolyte solution containing sodium saccharin," IEEE Transactions on Magnetics, vol.

47, no. 10, pp. Nickel-yttrium nanocrystalline alloys with an as-milled grain size of approximately nm were synthesized using high-energy cryogenic mechanical alloying. The microstructural changes due to annealing were characterized using x-ray line broadening, microhardness, focused ion beam channeling contrast imaging, and transmission electron microscopy.

Therefore, electrodeposited Nickel-Cobalt (eNiCo) alloys has been the subject of investigation owing to their excellent mechanical and magnetic properties. The earliest investigations on these alloys were reported in early 's, where the primary goal of electrodepositing Ni with Co was to obtain smooth, pinhole free, lustrous, hard, wear and.

Synthesis, characterization and understanding of the mechanisms of electroplating of nanocrystalline–amorphous nickel–tungsten alloys using in situ electrochemical impedance spectroscopy. Journal of Alloys and Compounds, DOI: /m Abstract: The work hardening behavior of electrodeposited nanocrystalline (grain size: nm) and fully annealed polycrystalline nickel (grain size: µm) was examined by hardness indentation analysis.

First, plastic strain was introduced into the materials through large Rockwell hardness indentations. Ultrafine, magnetic nickel ferrite (NiFe2O4) particles of high crystallinity were prepared by hydrolysis of organic iron(III)−nickel carboxylate solutions with water at − °C and − MPa at reaction times between 10 and min.

The resulting nickel ferrite was free from contamination by the organic material, and the particle size drastically decreased from to μm as.

NiFe2O4 nanocrystals were dispersed in silica by a sol−gel route. The dried gel was amorphous, in which isolated Fe3+ ions had a weak interaction with silica matrix, as characterized by a weak IR absorption at ca. cm Heat treatment at °C resulted in nickel ferrite clusters being partially formed, and these clusters were observed to interact with the matrix through Si−O−Fe.

Three electrodeposited Fe-Ni, Fe-Co, and Fe-Ni-Co cores of thin film transformer are prepared on silicon (1 0 0) substrates, which are sputtered a 90 nm thick film of Cu acting as the seed layer. The core films consisting of Fe-NiFe-Co and Fe-Ni-Corespectively, are deposited using direct current electrodeposition.

The surface texture, electrical and magnetic properties.In the present work impact of 3,4-Dihydroxybenzaldehyde on the microstructural and corrosion behavior of nanocrystalline Ni-W alloy coatings has been elucidated.

A systematic investigation on the protection ability of Ni-W alloy coatings in M H 2 SO 4 solution was done with the aid of tafel polarization curves and electrochemical impedance.Journal of Metastable and Nanocrystalline Materials Books Topics. All Books.

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