The Controlled Compound Layer of Ni-Coated Nitrided Pure Iron
School of Materials and Energy, Southwest University, Chongqing 400715, China
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Nanomaterials 2021, 11(1), 31; https://doi.org/10.3390/nano11010031
Received: 16 November 2020
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Revised: 19 December 2020
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Accepted: 21 December 2020
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Published: 24 December 2020
In order not to sacrifice nitrided layer thickness and reduce brittle compound layer thickness, Ni-coated pretreatment was carried out with electrodeposition on a pure iron surface, followed by gas nitriding. The brittle compound layer thickness of duplex surface treated samples was reduced, and the nitrided layer thickness increased to 320 μm. The microhardness was 4 times harder, and the wear loss was reduced by 68% compared with the original material. The results indicate that Ni-coated pretreatment could effectively improve microhardness and wear resistance and realize the controlled microstructure of a brittle compound layer of pure iron without compromising nitrided layer thickness. Ni coating plays an important role in ammonia adsorption and decomposition, and in the transfer of active nitrogen atoms during nitriding.
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Keywords:
Ni-coated pretreatment; microstructure; compound layer; nitrided layer; effective hardened layer; wear resistance
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MDPI and ACS Style
Shen, Q.; Zhang, Y.; Li, X.; Xiang, L.; Nie, C. The Controlled Compound Layer of Ni-Coated Nitrided Pure Iron. Nanomaterials 2021, 11, 31. https://doi.org/10.3390/nano11010031
AMA Style
Shen Q, Zhang Y, Li X, Xiang L, Nie C. The Controlled Compound Layer of Ni-Coated Nitrided Pure Iron. Nanomaterials. 2021; 11(1):31. https://doi.org/10.3390/nano11010031
Chicago/Turabian StyleShen, Qianqian, Yu Zhang, Xuesha Li, Li Xiang, and Chaoyin Nie. 2021. "The Controlled Compound Layer of Ni-Coated Nitrided Pure Iron" Nanomaterials 11, no. 1: 31. https://doi.org/10.3390/nano11010031
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