Mechano-chemical synthesis and characterization of Ti (C, N)-powder from TiN-MWCNTs/graphite

Akinribide, Ojo Jeremiah; Obadele, Babatunde Abiodun; Mekgwe, Gadifele Nicolene; Ajibola, Olawale Olarewaju; Akinwamide, Samuel Olukayode; Nomoto, Keita; Ringer, Simon P.; Olubambi, Peter Apata

doi:10.1080/02726351.2019.1637625

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…A similar observation was reported in a study by Shi et al [44]. It should be noted that coarse grains might be generated through the initial agglomerates present in the powder source, thereby exhibiting completely recrystallized textures constituting bimodal grain distribution with different diameters [45]. Therefore, during the powder preparation process, de-agglomeration treatment such as ultrasonic conditioning should be considered [46].…”

Section: Microstructure Of Sintered Ticn Based Ceramic Compositessupporting

confidence: 62%

Insight into tribological and corrosion behaviour of binderless TiCxNy ceramic composites processed via pulsed electric current sintering technique

Mekgwe

Akinwamide

Akinribide

et al. 2022

Ceramics International

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Section: Microstructure Of Sintered Ticn Based Ceramic Compositessupporting

confidence: 62%

Insight into tribological and corrosion behaviour of binderless TiCxNy ceramic composites processed via pulsed electric current sintering technique

Mekgwe

Akinwamide

Akinribide

et al. 2022

Ceramics International

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Morphological analysis and high-temperature phase stability of spark plasma sintered TiN-MWCNTs ceramic composite

2023

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The microstructure, mechanical properties, and phase stability of TiN+MWCNTs ceramic-based composite were studied. Ball milling and spark plasma sintering (SPS) techniques were adopted for synthesizing titanium nitride (TiN) composites containing 1, 3, and 5 wt. percent (wt. %) multiwalled carbon nanotubes (MWCNT). At a temperature of 1000 °C where the phase stability was investigated, the effects of MWCNT addition on thermal treatment and mechanical characteristics of the fabricated composites were explored. According to the results, the resultant effect of ball milling on the ad-milled powders and sintering at a temperature of 1800 °C played a critical role in the homogenous diffusion of MWCNTs into the TiN ceramic matrix. It was further noted that the addition of different wt. % of multiwalled carbon nanotube helped in stabilizing the FCC-crystal phases at this elevated temperature. A slight transformation was observed in the microstructures, as the core and the outer rim phases remained stable in their crystallographic orientation. The varying addition of MWCNTs retained the α-FCC phase both at the core and the outer rim phase during and after thermal exposure of 1000 °C for 3 h. The composite with 1wt. % MWCNT content exhibited the highest hardness of 40 GPa with a fracture toughness of 12.22 MPa m1/2, while the least hardness value of 12.5 GPa was recorded by the unreinforced TiN sample. The effect of mechanical alloying and thermal exposure of the ceramic composites significantly enhanced the strengthening and toughening of the composites.

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Impact of heat treatment on mechanical and tribological behaviour of unalloyed and alloyed ductile iron

Akinribide

Olusunle

Akinwamide

et al. 2021

Journal of Materials Research and Technology

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Mechano-chemical synthesis and characterization of Ti (C, N)-powder from TiN-MWCNTs/graphite

Cited by 3 publications

References 23 publications

Insight into tribological and corrosion behaviour of binderless TiCxNy ceramic composites processed via pulsed electric current sintering technique

Insight into tribological and corrosion behaviour of binderless TiCxNy ceramic composites processed via pulsed electric current sintering technique

Morphological analysis and high-temperature phase stability of spark plasma sintered TiN-MWCNTs ceramic composite

Impact of heat treatment on mechanical and tribological behaviour of unalloyed and alloyed ductile iron

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