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Special Features of Vacuum Carburizing of Heat-Resistant Steel in Acetylene

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Abstract

The mechanism of formation of the diffusion layer due to vacuum carburizing of complexly alloyed steel 16Kh3NVFMB-Sh (VKS5) in a medium of acetylene is considered. It is shown that the process of carburizing occurs in a self-regulation mode without the danger of carbon black due to the high rate of arrival of carbon from the gas medium as a result of catalytic dissociation of acetylene molecules, intense process of carbide formation on the saturated surface, and absence of catalytic activity of carbides. The diffusion layer forms under a thin layer of the carbide phase in a kinetic regime, the intensity of which is determined by the rate of dissolution of carbides.

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Authors and Affiliations

  1. N. É. Bauman Moscow State Technical University, Moscow, Russia

    N. M. Ryzhov, A. E. Smirnov, R. S. Fakhurtdinov, L. M. Mulyakaev & V. I. Gromov

  2. MMPP Salyut State Unitary Enterprise, Moscow, Russia

    N. M. Ryzhov, A. E. Smirnov, R. S. Fakhurtdinov, L. M. Mulyakaev & V. I. Gromov

Authors
  1. N. M. Ryzhov
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  2. A. E. Smirnov
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  3. R. S. Fakhurtdinov
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  4. L. M. Mulyakaev
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  5. V. I. Gromov
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Ryzhov, N.M., Smirnov, A.E., Fakhurtdinov, R.S. et al. Special Features of Vacuum Carburizing of Heat-Resistant Steel in Acetylene. Metal Science and Heat Treatment 46, 230–235 (2004). https://doi.org/10.1023/B:MSAT.0000043108.71523.08

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  • DOI: https://doi.org/10.1023/B:MSAT.0000043108.71523.08

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