Influence of nanocrystalline nickel powder on oxidation resistance of spark plasma sintered Ni-17Cr6.5Co1.2Mo6Al4W7.6Ta alloy

Bukola Joseph Babalola, Nthabiseng Maledi, Mxolisi Brendon Shongwe, Michael Oluwatosin Bodunrin, Babatunde Abiodun Obadele, Peter Apata Olubambi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An investigation was carried out to evaluate the isothermal oxidation behavior of nickel based superalloys at 1100 °C for 120 h. The alloys which were microstructured and nanostructured were developed by spark plasma sintering system. The oxidation test was carried out at a temperature of 1100 °C in air at different exposure time up to 120 h. The nanostructured nickel based alloy possessed better oxidation resistance with the formation of continuous adherent alumina, chromia scales, and spinel on the alloy surface and with no significant internal oxides. The oxidation rate of NiO was observed to be lower in the nanostructured nickel superalloy due to low diffusion rate of Nickel. The oxidation kinetics followed a parabolic oxidation law.

Original languageEnglish
JournalJournal of King Saud University - Engineering Sciences
DOIs
Publication statusAccepted/In press - Jan 21 2019

Fingerprint

Oxidation resistance
Nickel
Electric sparks
Powders
Plasmas
Oxidation
Superalloys
Spark plasma sintering
Aluminum Oxide
Oxides
Alumina
Kinetics
Air
Temperature

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science (miscellaneous)
  • Fuel Technology
  • Fluid Flow and Transfer Processes
  • Computer Networks and Communications
  • Industrial and Manufacturing Engineering

Cite this

Babalola, Bukola Joseph ; Maledi, Nthabiseng ; Shongwe, Mxolisi Brendon ; Bodunrin, Michael Oluwatosin ; Obadele, Babatunde Abiodun ; Olubambi, Peter Apata. / Influence of nanocrystalline nickel powder on oxidation resistance of spark plasma sintered Ni-17Cr6.5Co1.2Mo6Al4W7.6Ta alloy. In: Journal of King Saud University - Engineering Sciences. 2019.
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abstract = "An investigation was carried out to evaluate the isothermal oxidation behavior of nickel based superalloys at 1100 °C for 120 h. The alloys which were microstructured and nanostructured were developed by spark plasma sintering system. The oxidation test was carried out at a temperature of 1100 °C in air at different exposure time up to 120 h. The nanostructured nickel based alloy possessed better oxidation resistance with the formation of continuous adherent alumina, chromia scales, and spinel on the alloy surface and with no significant internal oxides. The oxidation rate of NiO was observed to be lower in the nanostructured nickel superalloy due to low diffusion rate of Nickel. The oxidation kinetics followed a parabolic oxidation law.",
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Influence of nanocrystalline nickel powder on oxidation resistance of spark plasma sintered Ni-17Cr6.5Co1.2Mo6Al4W7.6Ta alloy. / Babalola, Bukola Joseph; Maledi, Nthabiseng; Shongwe, Mxolisi Brendon; Bodunrin, Michael Oluwatosin; Obadele, Babatunde Abiodun; Olubambi, Peter Apata.

In: Journal of King Saud University - Engineering Sciences, 21.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of nanocrystalline nickel powder on oxidation resistance of spark plasma sintered Ni-17Cr6.5Co1.2Mo6Al4W7.6Ta alloy

AU - Babalola, Bukola Joseph

AU - Maledi, Nthabiseng

AU - Shongwe, Mxolisi Brendon

AU - Bodunrin, Michael Oluwatosin

AU - Obadele, Babatunde Abiodun

AU - Olubambi, Peter Apata

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AB - An investigation was carried out to evaluate the isothermal oxidation behavior of nickel based superalloys at 1100 °C for 120 h. The alloys which were microstructured and nanostructured were developed by spark plasma sintering system. The oxidation test was carried out at a temperature of 1100 °C in air at different exposure time up to 120 h. The nanostructured nickel based alloy possessed better oxidation resistance with the formation of continuous adherent alumina, chromia scales, and spinel on the alloy surface and with no significant internal oxides. The oxidation rate of NiO was observed to be lower in the nanostructured nickel superalloy due to low diffusion rate of Nickel. The oxidation kinetics followed a parabolic oxidation law.

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