Journal of Materials Science

, Volume 41, Issue 15, pp 4948–4960 | Cite as

Formation of boride layers at the Fe–25% Cr alloy–boron interface

  • V. I. DybkovEmail author
  • W. Lengauer
  • P. Gas


Two boride layers based on the FeB and Fe2B compounds are formed at the interface between a Fe–25% Cr alloy and boron at 850–950 °C and reaction times up to 12 h. The characteristic feature of both layers is a pronounced texture. Each of two boride layers is compositionally two-phase. The outer layer consists of the (Fe,Cr)B and (Cr,Fe)B phases. The inner layer comprises the (Fe,Cr)2B and (Cr,Fe)2B phases. The diffusional layer-growth kinetics are close to parabolic and can alternatively be described by a system of two non-linear differential equations, also producing a fairly good fit to the experimental data. Annealing of a borided Fe–Cr sample in the absence of boriding media results in the disappearance of the (Fe,Cr)B–(Cr,Fe)B layer, with the (Fe,Cr)B phase disappearing first. Microhardness values are 21.0 GPa for the outer layer, 18.0 GPa for the inner layer and 1.35 GPa for the alloy base. The abrasive wear resistance of the (Fe,Cr)B–(Cr,Fe)B layer, found from mass loss measurements, is more than 150 times greater than that of the alloy base.


Alloy Base Boride Layer Abrasive Wear Resistance Boride Phase KBF4 



This investigation was supported in part by the STCU grant No. 2028. The authors thank V.G. Khoruzha, V.R. Sidorko, K.A. Meleshevich and A.V. Samelyuk for their help in conducting the experiments and carrying out the necessary analyses.


  1. 1.
    Voroshnin LG, Lyakhovich LS (1978) Borirovaniye stali. Metallurgiya, Moskwa (in Russian)Google Scholar
  2. 2.
    Kunst H, Schroll H, Luetje R, Wittel K, Lugscheider E, Weber T, Eschnauer HR, Raub C (1991) In: Ullmann’s Encyclopedia of Industrial, vol A16. Chemistry Verlag Chemie, Weinheim, p 427Google Scholar
  3. 3.
    Sinha AK (1982) In: Sinha AK (ed) Metals handbook, ASM International, Metals Park, OH, p 844Google Scholar
  4. 4.
    Hansen M (1958) Constitution of binary alloys, 2nd edn. McGraw-Hill, New-York, p 249Google Scholar
  5. 5.
    Vol AE (1962) Stroeniye i svoystva dvoynikh metallicheskikh system, vol 1, Fizmatgiz, Moskwa, p 679 (in Russian)Google Scholar
  6. 6.
    Massalski TB, Murray JL, Bennett LH, Baker H (1986) Binary Alloy Phase Diagrams, vol. 1. American Society of Metals, Metals Park, OH, p 351Google Scholar
  7. 7.
    Okamoto H (2004) J Phase Equilibria Diffusion 25:297CrossRefGoogle Scholar
  8. 8.
    Brandstötter J, Lengauer W (1997) J Alloys Compd 262–263:390CrossRefGoogle Scholar
  9. 9.
    Gurov KP, Kartashkin BA, Ugaste Yu A (1981) Vzaimnaya diffusiya v mnogofaznikh metallicheskikh sistemakh. Nauka, Moskwa (in Russian)Google Scholar
  10. 10.
    Dybkov VI (2002) Reaction diffusion and solid state chemical kinetics (The IPMS Publications, Kyiv) (available for reading at∼dybkov/V)Google Scholar
  11. 11.
    Gorelik SS, Rastorguev LN, Skakov Yu A (1970) Rentgenograficheskiy i elektronno-opticheskiy analiz, prilozheniya. Metallurgiya, Moskwa, p 29 (in Russian)Google Scholar
  12. 12.
    Goeuriot P, Fillit R, Thevenot F, Driver JH, Bruyas H (1982) Mater Sci Eng 55:9CrossRefGoogle Scholar
  13. 13.
    Carbucicchio M, Palombarini G (1987) J Mater Sci Lett 6:1147–1149CrossRefGoogle Scholar
  14. 14.
    Martini C, Palombarini G, Carbucicchio M (2004) J Mater Sci 39:933CrossRefGoogle Scholar
  15. 15.
    Seith W (1955) Diffusion in metallen. Springer, BerlinCrossRefGoogle Scholar
  16. 16.
    Hauffe K (1955) Reaktionen in und an festen Stoffen Springer, BerlinCrossRefGoogle Scholar
  17. 17.
    Dybkov OV, Dybkov VI (2004) J Mater Sci Lett 39:6615CrossRefGoogle Scholar
  18. 18.
    Voroshnin LG (1981) Borirovaniye promyshlennikh staley i chugunov. Belarus, Minsk (in Russian)Google Scholar
  19. 19.
    Motovilin GV, Masino MA, Suvorov OM (1989) Avtomobilnie materialy. Transport, Moskwa (in Russian)Google Scholar
  20. 20.
    Dybkov VI, Lengauer W, Barmak K (2005) In: Proc 16th Plansee Seminar, Reutte, Austria, May 31–June 4, vol 2, pp 999–1009Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Department of Physical Chemistry of Inorganic MaterialsInstitute for Problems of Materials ScienceKyivUkraine
  2. 2.Institute for Chemical Technologies and AnalyticsVienna University of TechnologyViennaAustria
  3. 3.L2MP-CNRS, Faculté des Sciences St JeromeMarseilleFrance

Personalised recommendations