ELECTROCHEMICAL SYNTHESIS OF METAL-MATRIX COMPOSITES BASED ON DISPERSED PARTICLES OF МоО3 (CORE)–WO3(SHELL) STRUCTURE
Abstract
The possibility of synthesis of metal-matrix composites via coprecipitation of nickel with the particles of МоО3 (core)–WO3(shell) structure was demonstrated. It has been shown that the deposition of WO3 shell permits one to stabilize the dispersed molybdenum trioxide in the nickel plating bath, with the particles of second phase retaining the redox activity that facilitates their overgrowing with matrix metal and ensures large oxide loading in the nickel deposit at a low concentration of oxide in the electrolyte. It is shown that due to the lamellar structure inherent in the MoO3 core the Ni–MoO3/WO3 composites exhibit enhanced wear resistance that is more than 3 times as high as that of bare galvanic nickel.
About the Authors
T. V. SVIRIDOVA
Белорусский государственный университет, Минск
Belarus
Belarus
A. S. LOGVINOVICH
Белорусский государственный университет, Минск
Belarus
Belarus
D. V. SVIRIDOV
Белорусский государственный университет, Минск
Belarus
Belarus
References
1. Свиридова Т. В. Композиционные материалы: металл-матричные композиты. Минск, 2012. – 272 с.
2. Hovestad A., Janssen L. J. J. // J. Appl. Electrochem. 1995. Vol. 25. P. 519–527.
3. Musiani M. // Electrochim. Acta. 2000. Vol. 45. P. 3397.
4. Sviridova T. V., Stepanova L. I., Sviridov D. V. // Molybdenum: Characteristics, Production and Applications / ed. by M. Ortiz et al. NY, 2012. P. 147–179.
5. Sviridova T. V., Stepanova L. I., Sviridov D. V. // J. Solid-State Electrochem. 2012. Vol. 16, N 12. Р. 3799–3803.
6. Степанова Л. И., Бодрых Т. И., Пуровская О. Ф., Свиридова Т. В. // Нанотехника. 2005. № 2. С. 54–60.
7. Modern electroplating / ed. by F. A. Lowenheim. NY, 1974. – 802 p.
Review
Views: 784
Email this article 