Obrabotka Metallov 2018 Vol. 20 No. 2

OBRABOTKAMETALLOV Vol. 20 No. 2 2018 99 MATERIAL SCIENCE 21. Xie F., Sun L., Cheng J. Alternating current field assisted pack boriding to Fe 2 B coating. Surface Engineering , 2013, vol. 29, pp. 240–243. doi: 10.1179/1743294412Y.0000000104. 22. Keddam M., Chentouf S.M. A diffusion model for describing the bilayer growth (FeB/Fe2B) during the iron powder-pack boriding. Applied Surface Science , 2005, vol. 252, iss. 4, pp. 393–399. doi: 10.1016/j.apsusc.2005.01.016. Conflicts of Interest The authors declare no conflict of interest. © 2018 The Authors. Published by Novosibirsk State Technical University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/ ).