caa a22 4500 46798316X CHVBK 20180323112524.0 cr unu---uuuuu 170328e19901101xx s 000 0 eng 10.1007/BF00700063 doi (NATIONALLICENCE)springer-10.1007/BF00700063 Characteristic features of the boriding of tool steel 4Kh5MFS from the gas phase [Elektronische Daten] [V. Korostelev, A. Petrov, N. Ignatenko] Conclusions: 1. The process of boriding steel 4Kh5MFS from the gas phase using powder mixtures takes place in a stable and uniform manner, but oxidation of the surface metal is possible due to the presence of oxygen. Significant variation in the composition of the diffusion layer occurs in this case. The redistribution of chromium, silicon, and vanadium is observed; the concentration of molybdenum is virtually unchanged. 2. To eliminate the formation of a zone impoverished of alloying elements, it is expedient to use steels with an elevated content of such alloying elements as tungsten, molybdenum, and vanadium for molds subjected to surface hardening by boriding. 3. The boriding of tool steel from powder mixtures ensures the formation of boride layers 30-35 μm thick, which exhibit high thermal stability under cyclic temperatures and force effects; this is the premise for increasing, the stability of molds, which are taken out of service primarily because of bearing stress, plastic forming, and the sticking of molten metal. Plenum Publishing Corporation, 1991 Korostelev V. aut Petrov A. aut Ignatenko N. aut Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/11(1990-11-01), 839-842 0026-0673 32:11<839 1990 32 11041 https://doi.org/10.1007/BF00700063 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00700063 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Korostelev V. aut NATIONALLICENCE 700 1- Petrov A. aut NATIONALLICENCE 700 1- Ignatenko N. aut NATIONALLICENCE 773 0- Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/11(1990-11-01), 839-842 0026-0673 32:11<839 1990 32 11041 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer