Conclusions
The addition of 0.5% Pd to a sinter-bonded molybdenum coating on niobium intensifies the process of formation of a Nb-Mo solid solution zone. The rates of siliconizing of an alloyed molybdenum coating and of the diffusional reaction of the resultant alloyed siticide coating with the substrate are higher than those observed with unalloyed coatings as a result of the formation of liquid eutectic interlayers containing Pd and Si. Alloying with palladium improves the oxidation and thermal fatigue resistance of MoSi2 coatings on niobium.
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Literature cited
A. V. Byalobzheskii and M. S. Tsirlin, “Principles of protection of refractory metals and alloys against oxidation,” in: Protective Coatings [in Russian], Nauka, Leningrad (1979), pp. 3–8.
G. V. Samsonov and V. I. Yakovlev, “Activated sintering of tungsten with palladium additions,” Poroshk. Metall., No. 7, 45–49 (1967).
L. I. Shnaiderman and V. V. Skorokhod, “Effect of palladium on the process of diffusional alloy formation and microstructure during the sintering of tungsten-rhenium powders with well-developed surfaces,” Poroshk. Metall., No. 1, 36–40 (1980).
D. Kay (editor), Electron Microscopy Techniques [Russian translation], Mir, Moscow (1965).
T. V. Sokolova, S. S. Bartenev, A. V. Kvitko, and I. R. Kozlova, “Complex investigation of spray-deposited alumina with some predetermined physicochemical characteristics,” in: Inorganic and Organosilicate Coatings [in Russian], Nauka, Leningrad (1975), pp. 128–135.
M. S. Tsirlin, A. V. Kasatkin, and A. V. Byalobzheskii, “An oxidation-resistant siticide coating for niobium alloys,” Poroshk. Metall., No. 12, 31–34 (1978).
A. N. Khodan and V. N. Vechkanov, “Modernization of the standard programming equipment of the Camebax apparatus with the Tracer automation system,” in: Apparatus and Methods for X-Ray Analysis [in Russian], Vol. 23 (1980), pp. 242–253.
V. I. Iveronova and G. P. Revkevich, Theory of X-Ray Scattering [in Russian], Moscow State Univ. (1972).
V. A. Ivensen, “Investigation of the densification of P/M solids during sintering,” Zh. Tekh. Fiz.,20, No. 12, 1490–1496 (1950).
Ya. E. Geguzin and Yu. I. Klinchuk, “Mechanism and kinetics of the initial stage of solid-phase sintering of compacts from powders of crystalline solids (sintering ‘activity”),” Poroshk. Metall., No. 7, 17–25 (1976).
V. V. Skorokhod, “Mechanism of flow of material during sintering and superplasticity of polycrystalline materials,” Poroshk. Metall., No. 5, 34–40 (1978).
F. Shank, Structures of Binary Alloys [Russian translation], Metallurgiya, Moscow (1973).
W. Zaiss, S. Steeb, and T. Krabichler, “Diffusionsuntersuchungen im System Molibdän-Palladium mit Hilfe einer Mikrosonde,” Z. Metallk.,63, No. 4, 180–184 (1972).
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Translated from Poroshkovaya Mettallurgiya, No. 1(229), pp. 26–32, January, 1982.
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Tsirlin, M.S., Kasatkin, A.V., Plavnik, G.M. et al. Effect of palladium on the formation and protective properties of molybdenum-silicon coatings on niobium. Powder Metall Met Ceram 21, 23–28 (1982). https://doi.org/10.1007/BF00791720
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DOI: https://doi.org/10.1007/BF00791720