Collection of scientific works Nanosystems, nanomaterials, nanotechnologies Year 2023 Volume 21, Issue 2
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I. M. Rybalko, S. P. Romanyuk, L. V. Omelchenko, and O. V. Markov
Increasing the Properties and Operational Stability of Strengthening and Restoration of Parts by Modification with Nano- and Dispersed Diamonds
0363–0378 (2023)

PACS numbers: 62.23.St, 68.37.-d, 75.50.Tt, 81.05.uj, 81.07.Bc, 81.70.Jb, 82.33.Vx

The work analyses three new methods of obtaining coatings on parts from different materials: low-carbon, low-alloy, and dispersion-hardened ones, which achieve the necessary properties of quality and efficiency in use. These include improvement of consumer properties, inhibition of the strengthening phases from the restored part to the coating, and one-time strengthening and healing of defects. For this purpose, various technological approaches are used to introduce a modifying admixture into the liquid bath during surfacing with preliminary annealing it to correct the proportion of oxygen. The proportion of the modifying admixture, which varies from 5.0 to 15.0% of the electrode weight, is also adjusted once. The economic effect of the implementation of the technology of restoration of 100 cardan shafts, according to the developed technology and parameters of their strengthening, reaches 187.5 thousands of hryvnias.

Key words: modification during surfacing, reinforcing coating, structure formation, heterogeneity, phase interplay, diamond fraction, operational stability.

https://doi.org/10.15407/nnn.21.02.363

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