S. E. Danilov, V. L. Arbuzov
OBTAINING PURE CARBON-ALLOYED NICKEL
DOI: 10.17804/2410-9908.2019.4.038-043 The preparation of alloys with different carbon concentrations by diffusion annealing
in a carburizing atmosphere using pure nickel (RRR at a level of 400) and homogenizing annealing in high vacuum is discussed. The installation scheme is described. The possibility of uniform carbon doping of samples and material in the form of 0.2 to 0.5 mm thick foils is shown in a wide range of concentrations (0.005 to 0.5 at. %).
Carburizing annealing is carried out in an atmosphere of pure helium passed through a titanium getter with the addition of acetone vapor, which decomposes in the furnace and leads to coating the surface of the samples with carbon, which is a diffusion source. By choosing different temperatures and annealing times, various carbon concentrations or diffusion zones with known parameters can be obtained. The removal of surface layers in a polishing etchant after saturation and subsequent homogenizing annealing at high temperatures in high vacuum allow one to obtain a uniform distribution of carbon and a selected concentration.
Acknowledgments: The work was subsidized by the Complex Program of UB RAS, project No. 15-9-2-30. Keywords: alloying, carbon, nickel, diffusion, carburization, homogenization References: 1. Sorensen S.M., Chen C.W. The effect of carbon on void formation in neutron-irradiated nickel. Radiation Effects, 1977, vol. 33, pp. 109–118.
2. Begak O.Y., Fedorov V.V. Mass-spectrometric determination of low sulfur contents in metals by heterogeneous isotope equilibration. Journal of Analytical Chemistry of the USSR, vol. 37, iss. 5, pp. 661–664.
3. Shwerer F.C. Curie Temperatures and Residual Resistivity of Nickel-Carbon Solid Solution. J. Appl. Phys., 1969, vol. 40, no. 7, pp. 2705–2707. DOI: 10.1063/1.1658065.
Article reference
Danilov S. E., Arbuzov V. L. Obtaining Pure Carbon-Alloyed Nickel // Diagnostics, Resource and Mechanics of materials and structures. -
2019. - Iss. 4. - P. 38-43. - DOI: 10.17804/2410-9908.2019.4.038-043. -
URL: http://eng.dream-journal.org/issues/2019-4/2019-4_268.html (accessed: 12/02/2024).
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