ERA

Download the full-sized PDF of Study on Ni/Cu Alloy Plating and Pure Nickel Electrodeposition in Magnetic FieldsDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R3266T

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Graduate Studies and Research, Faculty of

Collections

This file is in the following collections:

Theses and Dissertations

Study on Ni/Cu Alloy Plating and Pure Nickel Electrodeposition in Magnetic Fields Open Access

Descriptions

Other title
Subject/Keyword
magnetic
electrodeposition
Ni/Cu
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Wang, Tianfei
Supervisor and department
Weixing, Chen (Chemical and Materials Engineering)
Examining committee member and department
Jingli, Luo (Etsell, Thomas (Chemical and Materials Engineering)
Douglas, Ivey (Chemical and Materials Engineering)
Guohua, Chen ( Department of Chemical and Biomolecular Engineering, Hong Kong University of Science and Technology)
Thomas, Etsell (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Materials Engineering
Date accepted
2015-01-26T10:59:46Z
Graduation date
2015-06
Degree
Doctor of Philosophy
Degree level
Doctoral
Abstract
The processes of Ni/Cu electro-co-deposition and pure nickel electroplating in magnetic field have been investigated. Various techniques such as scanning electron microscope (SEM), atomic force microscope (AFM), X-ray diffractometer (XRD), and electrochemical characterization were used to determine the characteristics of electro-deposition. A reliable method has been developed to fabricate Ni/Cu coating film with uniform composition. The color of Ni/Cu deposits was found to be related to the residual stresses in the deposits, which could be altered by adjusting the pH level of the solution. The magneto-electrolytic deposition study found that MHD stirring in the bulk electrolyte has limited influence on the coating properties; however, MHD effect in the fluid boundary layer could modify the morphology and structure of the deposits. Three new models were proposed to interpret the underlying mechanisms on morphology and texture formation during nickel deposit in both parallel and vertical magnetic fields. The effect of the alternative magnetic field generated by spinning magnets on nickel deposition was also investigated and the coatings with better surface smoothness than static magnetic field had been achieved. The micro-hardness of the deposited nickel samples made in the absence and presence of magnetic field were evaluated. The hardness of the deposits can be well correlated to the surface roughness through a Hall-Petch-type relationship.
Language
English
DOI
doi:10.7939/R3266T
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication

File Details

Date Uploaded
Date Modified
2015-06-15T07:04:50.473+00:00
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (PDF/A)
Mime type: application/pdf
File size: 8757838
Last modified: 2015:10:21 00:54:58-06:00
Filename: Wang_Tianfei_201501_PhD.pdf
Original checksum: c07efae3423799f25066687ae193f706
Activity of users you follow
User Activity Date