Metal Science and Heat Treatment

, Volume 60, Issue 7–8, pp 454–456 | Cite as

Rapid Salt Bath Nitriding of Steel AISI 1045

  • Mingyang Dai
  • Chaoyu Li
  • Yating Chai
  • Jing HuEmail author

Carbon steel AISI 1045 (0.45% C) is studied as a model material for rapid nitriding in a salt bath at 660°C (instead of the conventional 560°C). The methods of optical microscopy, x-ray diffraction and measurement of microhardness and corrosion resistance are used to study the microstructure and the phase composition of the nitrided layer. It is shown that salt bath nitriding shortens the process considerably and raises its efficiency; the microhardness and the corrosion resistance grow and the nitride layer acquires a γ′-Fe4N phase.

Key words

carbon steel salt bath nitriding hardness x-ray diffraction 


This research has been supported by PAPD of Jiangsu Higher Educational Institutions, Jiangsu Province Graduate Student Innovation Fund (SCZ100431322) and Jiangsu Government Scholarship for Overseas Studies under Grant No. JS-2012-173.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Mingyang Dai
    • 1
  • Chaoyu Li
    • 2
  • Yating Chai
    • 1
  • Jing Hu
    • 1
    • 2
    • 3
    Email author
  1. 1.School of Materials Science and Engineering, Jiangsu Key Laboratory of Materials Surface Science and TechnologyChangzhou UniversityChangzhouChina
  2. 2.Jiangsu Collaborative Innovation Center of Photovoltaic Science and EngineeringChangzhou UniversityChangzhouChina
  3. 3.Materials Research and Education CenterAuburn UniversityAuburnUSA

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