Conclusions
As a result of the investigation of the structurization in the quasibinary system TiN-Ni after high-temperature liquid-phase and low-temperature solid-phase sintering it was established that structurization in short-term liquid-phase sintering is accompanied by the denitration of TiN, decrease of its microhardness, change of the compositon of its metal bond and of its amount in consequence of diffusion of Ti from TiN (formation of the eutectic Ti(Ni) + Ni3Ti).
The considerable increase of microhardness of grains of TiN and the linear increase of its lattice period after lengthy isothermal sintering are due to the dissolution of nickel in TiN. In the metal bond there appear excess crystals of Ni3Ti and of the eutectic Ni3Ti + TiNi.
The growth of TiN grains in the heterophase material TiN-Ni proceeds by the mechanism of coalescence and dissolution-segregation. After solid-phase sintering the phase composition of Ni and TiN did not change, the grain size of TiN remained stable.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature cited
V. T. Bondar', “The behavior of titanium nitride, zirconium, and vanadium in their compositions with nickel-molybdenum alloy,” Poroshk. Metall., No. 4, 68–73 (1974).
V. T. Bondar', “Interaction of titanium nitride and its compositions with nickel and nickel-molybdenum,” Poroshk. Metall, No. 8, 85–88 (1980).
O. N. Kaidash, “Regularities of the sintering of cermets based on titanium nitride,” in: Processes of Interaction of Phase Boundaries, Institu Sverkhtverdykh Materialov Akademii Nauk USSR, Kiev (1982), pp. 74–78.
F. F. Egorov, V. P. Smirnov, V. I. Timofeeva, and V. I. Mai, “Investigation of the interaction of titanium nitride with liquid nickel,” Adgeziya Rasplavov i Paika Materialov, No. 19, 59–63 (1987).
M. Hansen and K. Anderko, The Structure of Binary Alloys [Russian translation], Part 1, Metallurgizdat, Moscow (1967).
G. V. Samsonov (ed.), Physicochemical Properties of Elements: Handbook [in Russian], Naukova Dumka, Kiev (1965).
G. P. Shverikin, S. I. Alyanovskii, Yu. G. Zainulin, et al., Compounds with Variable Composition and Their Solid Solutions [in Russian], Uralskii Nauchnyi Tsentr Akademii Nauk SSSR, Sverdlovsk (1984).
V. A. Zhilyaev and I. S. Mogilevskaya, “Solid-phase interaction of titanium nitride with nickel and molybdenum,” in: Nitrides, Methods of Obtaining Them. Properties, Fields of Application, Zinantne, Riga (1984), pp. 43–44.
M. Fukuhara, K. Tsutsumi, and H. Mitani, “On some properties of TiNx-Ni powder compacts sintering by using the Ni-plated composite powders,” JSPM,27, No. 1, 17–22 (1970).
Author information
Authors and Affiliations
Additional information
Translated from Poroshkovaya Metallurgiya, No. 4(328), pp. 25–30, April, 1990.
Rights and permissions
About this article
Cite this article
Egorov, F.F., Koshkina, S.Y., Shatokhin, A.M. et al. Structurization in the sintering of heterophase materials TiN-Ni. Powder Metall Met Ceram 29, 275–279 (1990). https://doi.org/10.1007/BF00797225
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00797225