Abstract
The main parameters of electrospark alloying of steel 45 with anodes made from Ni – Cr – Al – Y alloys have been investigated. The anodes were fabricated by casting and hot pressing. The highest values of the mass transfer coefficient were observed in the case of electrospark alloying with hot-pressed alloys. Microstructure and x-ray phase analyses of electrospark coatings revealed the presence of solid solutions based on nickel, iron, chromium as well as intermetallic compounds. Coatings obtained by electrospark alloying with hot-pressed alloy are more wear-resistant than are coatings obtained by alloying with cast alloys.
Similar content being viewed by others
REFERENCES
C. T. Sims and W. C. Hagel (eds.), The Superalloys, Science and Technology of Materials Series, Wiley, New York (1973).
O. A. Bannykh and K. B. Povarova, “Prospects for refractory alloys and intermetallic compounds,” in: New Metallic Materials, Kiev (1989).
Yu. S. Borisov, Yu. A. Kharlamov, S. P. Sidorenko, and E. N. Ardatovskaya, Gas-Thermal Spray Coatings of Powdered Materials [in Russian], Nauk. Dumka, Kiev (1987).
B. A. Movchan and I. S. Malashenko, Vacuum-Deposited Heat-Resistant Coatings [in Russian], Nauk. Dumka, Kiev (1983).
R. A. Alfintseva, E. K. Fen', D. A. Kovaleva, et al., “Fundamental physicomechanical properties of wear and heat-resistant gas-thermal spray coatings of nichrome-based materials,” Poroshk. Metall., Nos. 1–2, 123-126 (1997).
A. D. Verkhoturov and I. M. Mukha, Technology of Electrospark Alloying of Metal Surfaces [in Russian], Tekhnika, Kiev (1982).
A. D. Verkhoturov, I. A. Podchernyaeva, L. F. Pryadko, and F F. Egorov, Electrode Materials for Electrospark Alloying [in Russian], Nauka, Moscow (1988).
G. P. Ivanov, Technology of Electrospark Hardening of Tools and Machine Parts [in Russian], Mashgiz, Moscow (1961).
G. A. Proshin, Electrospark Repair of Machine Parts [in Russian], Mashgiz, Moscow (1956).
A. V. Laptev, “Potentials of high-energy vacuum hot-pressing for making materials with an ultrafine structure and high strength,” Poroshk. Metall., Nos. 3–4, 8-19 (2001).
B. Massalski (ed.), Binary Alloy Phase Diagrams, Vol. 1, ASM, Metals Park, Ohio (1986), pp. 842, 1100.
I. I. Kornilov and R. S. Mints, “Study of the Ni–Cr–NiAl system,” Neorg. Khim., 3, No. 3, 699-704, 908 (1958).
G. P. Goretskii, “Investigation of alloys of binary eutectics of the Ni–Cr–Al system,” Metally, No. 5, 199-205 (1992).
R. A. Anfintseva, N. P. Brodnikovskii, A. V. Laptev, et al., “Properties of Ni–Cr–Al alloys obtained by powder metallurgy methods,” Poroshk. Metall., Nos. 3–4, 35-44 (2003).
G. V. Samsonov, A. D. Verkhoturov, G. A. Bovkun, and V. V. Sychev, Electrospark Alloying of Metal Surfaces [in Russian], Nauk. Dumka, Kiev (1976).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Paustovskii, A.V., Alfintseva, R.A., Kurinnaya, T.V. et al. Laws of Formation of Electrospark Coatings from Alloys of the Ni – Cr – Al – Y System. Powder Metallurgy and Metal Ceramics 43, 251–257 (2004). https://doi.org/10.1023/B:PMMC.0000042459.91784.5c
Issue Date:
DOI: https://doi.org/10.1023/B:PMMC.0000042459.91784.5c