Conclusions
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1.
The depth of penetration of aluminum is considerably larger than that of chromium and silicon.
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2.
The aluminum concentration must be reduced in order to avoid formation of a superstructure, which leads to brittleness of the diffusion coating.
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3.
The depth of penetration of the reagents is substantially larger when the gaseous phase is formed directly in the saturation chamber.
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Literature cited
M. Hansen and K. Anderko, Constitution of Binary Alloys, McGraw-Hill, New York (1958).
A. D. Le Claire et al., Diffusion in BCC Metals [Russian translation], Metallurgiya, Moscow (1969).
Additional information
People's Republic of Bulgaria. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 20–22, August, 1975
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Gogachev, I., Pushev, G. Multicomponent diffusion saturation of low-carbon steels in gaseous media. Met Sci Heat Treat 17, 659–661 (1975). https://doi.org/10.1007/BF00664311
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DOI: https://doi.org/10.1007/BF00664311