Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/655
Title: Pack-Boriding of Monel 400: Microstructural Characterization and Boriding Kinetics
Authors: Günen, Ali
Keddam, Mourad
Erdoğan, Azmi
Karakaş, Mustafa Serdar
Keywords: Superalloy
Monel 400
Boriding
Integral Diffusion Model
Heat-Treatment
Wear Behavior
Inconel
Corrosion
Layers
Issue Date: 2021
Publisher: KOREAN INST METALS MATERIALS
Abstract: Monel 400 was pack-borided in the temperature range of 1173-1273 K for exposure times of 2-6 h. The boride layers produced on the surface of the alloy were examined by scanning electron microscopy and phase identification was carried out by X-ray diffraction. The topmost layer on the borided Monel 400 was compact and contained the Ni2B phase while the diffusion zone contained grain boundary precipitates of borides. Boride layers of 35-290 mu m thickness and 1002-1476 HV0.025 hardness were obtained. SEM observations revealed a smooth interface between the boride layer and the diffusion zone. A kinetic model based on the integral method was applied to investigate the kinetics of Ni2B layer. The boron activation energy in the Ni2B layer was estimated as equal to 300.7 kJ mol(-1). An experimental validation of the model was made by comparing the experimental layer thicknesses obtained, after boriding at 1198 K for 1 and 3 h, with predicted values. [GRAPHICS] .
URI: https://doi.org/10.1007/s12540-021-01066-8
https://hdl.handle.net/20.500.13091/655
ISSN: 1598-9623
2005-4149
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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