Journal of Applied Electrochemistry

, Volume 11, Issue 2, pp 177–185 | Cite as

An electron microscope investigation of electrolytic copper powders

  • D. Russev


The size and nature of copper powders deposited in conditions close to those found in production units are investigated with a scanning electron microscope. It is shown that an increase in the current density or the concentration of sulphuric acid decreases the size of the particles and makes their dendritic structure more pronounced. In contrast, an increase of copper ion concentration or agitation increases the size of the particles and obscures their dendritic character. It is shown that the changes in the particle size and type are primarily dependent on cathode potential. A change from −100mV to —900mV versus SCE causes a decrease in the powder size from 80–100μm to 5–10μm and a successive appearance of the following types of particles: (a) round particles or dendrites with round tips, due to electrocrystallization in one plane (a compact deposition); (b) a transient structure, apparently a change to polycrystal growth on the pyramidal tips; (c) particles with pyramidal tips and (d) dimeric and trimeric dendrites.


Sulphuric Acid Microscope Investigation Production Unit Dendritic Structure Cathode Potential 


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  1. [1]
    L. Yang, Chien-yeh-Chien and R. Hudson,J. Electrochem. Soc. 106 (1959) 632.Google Scholar
  2. [2]
    E. Budevski, ‘Progress in Surface and Membrane Science’, Vol. 2, Academic Press, New York (1976) p. 71.Google Scholar
  3. [3]
    E. Budevski, V. Bostanov and T. Vitanov, ‘Rost Crystalov’, Vol. 10, Nauka, Moscow (1974) p. 230.Google Scholar
  4. [4]
    A. Chernov,Kristallogr. 7 (1962) 895.Google Scholar
  5. [5]
    Idem, ibid 8 (1963) 87.Google Scholar
  6. [6]
    M. Ovruzki and L. Chuprina,ibid 19 (1975) 1268.Google Scholar
  7. [7]
    F. Ogburn,J. Electrochem. Soc. 3 (1964) 870.Google Scholar
  8. [8]
    N. Saltikova and A. Baraboshkin,Trans. Inst. Electrochim. UFAN, USSR 5 (1960) 101Google Scholar
  9. [9]
    Idem, ibid 9 (1966) 83.Google Scholar
  10. [10]
    A. Baraboshkin, ‘Electrocrystallisazia Metallov iz Rasplavlenich Soley’ Nauka, Moscow (1976) p. 184.Google Scholar
  11. [11]
    G. Baralis,Metallurg. Ital. 60 (1968) 501.Google Scholar
  12. [12]
    E. Piesker,Metall. August (1974) 791.Google Scholar
  13. [13]
    T. Horiuchi,Proc. Fujihara Memorial Faculty Eng Keio Univ. 9 (1956) 21.Google Scholar
  14. [14]
    H. Pick and J. Wilcock,J. Inst. Metal. Finish 32 (1958) 298.Google Scholar
  15. [15]
    D. Gabe,Metallurgist 5 (1973) 72.Google Scholar

Copyright information

© Chapman and Hall Ltd 1981

Authors and Affiliations

  • D. Russev
    • 1
  1. 1.Institute of MetaloceramicsSofiaBulgaria

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