Conclusions
Solid solutions and the eutectic in the alloying electrode decrease its erosion during ESA, while the intermetallic compound and other brittle phases increase it. The erosion resistance of the anode grows with decrease in its porosity, and shows a correlation with the variation of its strength. A sufficiently strong bond between the phases in the heterophase material increases the latter's erosion resistance and leads to the formation of erosion products of mainly fine fractions. The presence in the anode of phases which can form iron-base solid solutions or intermetallic compounds with the basis material has a beneficial effect on the cathode weight gain. Phases which do not have this ability are retained on the cathode only when they have a strong bond with a phase (e.g., the metallic binder) which itself can form both solid solutions and intermetallic compounds with the basis.
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Translated from Poroshkovaya Metallurgiya, No. 4(268), pp. 32–36, April, 1985.
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Egorov, F.F., Poveshchenko, V.I. & Verkhoturov, A.D. Effect of phase composition and microstructure of sintered TiN-Cr electrode material on the main characteristics of the process of electric-spark alloying of steels. Powder Metall Met Ceram 24, 286–290 (1985). https://doi.org/10.1007/BF00805223
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DOI: https://doi.org/10.1007/BF00805223