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Fracture Toughness of Plasma Paste-Borided Layers Produced on Nickel-Based Alloys


[ 1 ] Instytut Inżynierii Materiałowej, Wydział Budowy Maszyn i Zarządzania, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.8] Materials engineering

Year of publication


Chapter type

chapter in monograph / paper

Publication language


  • borided layer
  • fracture toughness
  • boriding
  • hardness
  • nickel-based alloys

EN The boriding treatment is the suitable process which caused an increase in surface hardness and wear resistance of nickel and its alloys. However, the phase composition of boride layers strongly influences on layer properties—especially hardness and brittleness. The method of plasma paste boriding was used in this study to produce the hard boride layers on nickel-based alloys: Ni201, Inconel 600, and Nimonic 80A. This process was carried out at 800 °C (1073 K) for 3 h. The chemical composition of substrate material was the reason for producing of layers which were characterized by different thickness: 55 μm for Ni201, 42 μm for Inconel 600, 35 μm for Nimonic 80A. The lowest hardness (1000–1400 HV) and the highest fracture toughness (up to 2.6915 MPa m for Inconel 600-alloy and K c = 0.67 MPa m1/2 for Nimonic 80A-alloy) were calculated. This situation was caused by the appearance of hard ceramic phases (chromium borides CrB and Cr2B) in borided layer. Simultaneously, at the cross section of each sample, the strong fluctuation of hardness occurred, due to the variable participation of chromium and nickel borides.

Pages (from - to)

923 - 932





Advances in Manufacturing

Presented on

5th International Scientific-Technical Conference Manufacturing 2017, 24-26.10.2017, Poznań, Polska

Ministry points / chapter


Publication indexed in

WoS (15)

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