Abstract
Dispersion-hardened nickel has been produced by electrodepositing Ni from a Watts' bath containing Al2O3, TiO2 and ZrO2 particles (0.005–0.06μm) in suspension. The effect of these particles on the onset of recrystallization at elevated temperatures (up to 1400°C) has been studied and it has been shown that Al2O3 is the most effective in stabilizing the electrodeposited structure. Thin films of Ni-Al2O3 examined by transmission electron microscopy showed a high dislocation density and restricted twinning, the Al2O3 particles being present both within the grains and at the grain boundaries.
For optimum thermal stability the oxide should be present in the nickel matrix as discrete particles, but electron microscopy has shown that in all cases agglomeration occurs and that the particles are present as large clusters. Attempts to avoid this difficulty have proved unsuccessful.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
A. E. Grazen,Iron Age,183 No. 5, (1959) 94.
J. C. Withers,Prod. Finishing (Cincinnati),26 No. 11, (1962) 62.
F. K. Sautter,J. Electrochem. Soc.,110 (1963) 577.
R. V. Williams and P. W. Martin, 6th International Metal Finishing Conference, London, 1964.
R. S. Saifaullin,Zhur Priklad Khim,39 (1966) 810.
P. W. Martin,Metal Finishing Journal,11 (1965) 399.
J. E. Hoffmann and C. L. Mantell,Trans Met Soc. A.I.M.E. 236 (1966) 1015.
G. E. Dieter, ‘Mechanical Metallurgy’ McGraw-Hill Book Company, New York (1961).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nwoko, V.O., Shreir, L.L. Electron micrographic examination of electrodeposited dispersion-hardened nickel. J Appl Electrochem 3, 137–141 (1973). https://doi.org/10.1007/BF00613504
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00613504