Microstructure, tribological and oxidation behaviour of spark plasma sintered Ti-Ni-xTiCN composites

Azeez Lawan Rominiyi; Mxolisi Brendon Shongwe; Samson Olaitan Jeje; Peter Apata Olubambi

doi:10.1016/j.jallcom.2021.161857

Microstructure, tribological and oxidation behaviour of spark plasma sintered Ti-Ni-xTiCN composites

Azeez Lawan Rominiyi, Mxolisi Brendon Shongwe, Samson Olaitan Jeje, Peter Apata Olubambi

Metallurgy

Tshwane University of Technology

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The dearth of information on the tribological and oxidation behaviour of Ti-Ni-TiCN composites has been identified in the literature. Therefore, in this work the tribological and oxidation behaviour of spark plasma sintered Ti-6Ni-xTiCN composites were reported. Microstructural and phase analyses showed the evolution of hard phases of Ti₂Ni intermetallic, in-situ formed TiN and unreacted TiCN within matrix of the composites which enhanced the hardness. The dry sliding wear across all tested loads and oxidation behaviour up to 800 °C of the composites were better than that of CP-Ti. Ti-6Ni-10TiCN composite exhibited the highest wear and oxidation resistance across the tested loads and oxidation condition, respectively. This was attributed to the uniform distribution of the reinforcing phases and the formation of the protective oxide layer on the surface of the sintered composites.

Original language	English
Article number	161857
Journal	Journal of Alloys and Compounds
Volume	890
DOIs	https://doi.org/10.1016/j.jallcom.2021.161857
Publication status	Published - 15 Jan 2022

Keywords

In-situ TiN
Oxidation
Spark plasma sintering
TiCN nanoceramic
Titanium matrix composites
Tribology

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2021.161857

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title = "Microstructure, tribological and oxidation behaviour of spark plasma sintered Ti-Ni-xTiCN composites",

abstract = "The dearth of information on the tribological and oxidation behaviour of Ti-Ni-TiCN composites has been identified in the literature. Therefore, in this work the tribological and oxidation behaviour of spark plasma sintered Ti-6Ni-xTiCN composites were reported. Microstructural and phase analyses showed the evolution of hard phases of Ti2Ni intermetallic, in-situ formed TiN and unreacted TiCN within matrix of the composites which enhanced the hardness. The dry sliding wear across all tested loads and oxidation behaviour up to 800 °C of the composites were better than that of CP-Ti. Ti-6Ni-10TiCN composite exhibited the highest wear and oxidation resistance across the tested loads and oxidation condition, respectively. This was attributed to the uniform distribution of the reinforcing phases and the formation of the protective oxide layer on the surface of the sintered composites.",

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author = "Rominiyi, {Azeez Lawan} and Shongwe, {Mxolisi Brendon} and Jeje, {Samson Olaitan} and Olubambi, {Peter Apata}",

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AU - Rominiyi, Azeez Lawan

AU - Shongwe, Mxolisi Brendon

AU - Jeje, Samson Olaitan

AU - Olubambi, Peter Apata

PY - 2022/1/15

Y1 - 2022/1/15

N2 - The dearth of information on the tribological and oxidation behaviour of Ti-Ni-TiCN composites has been identified in the literature. Therefore, in this work the tribological and oxidation behaviour of spark plasma sintered Ti-6Ni-xTiCN composites were reported. Microstructural and phase analyses showed the evolution of hard phases of Ti2Ni intermetallic, in-situ formed TiN and unreacted TiCN within matrix of the composites which enhanced the hardness. The dry sliding wear across all tested loads and oxidation behaviour up to 800 °C of the composites were better than that of CP-Ti. Ti-6Ni-10TiCN composite exhibited the highest wear and oxidation resistance across the tested loads and oxidation condition, respectively. This was attributed to the uniform distribution of the reinforcing phases and the formation of the protective oxide layer on the surface of the sintered composites.

AB - The dearth of information on the tribological and oxidation behaviour of Ti-Ni-TiCN composites has been identified in the literature. Therefore, in this work the tribological and oxidation behaviour of spark plasma sintered Ti-6Ni-xTiCN composites were reported. Microstructural and phase analyses showed the evolution of hard phases of Ti2Ni intermetallic, in-situ formed TiN and unreacted TiCN within matrix of the composites which enhanced the hardness. The dry sliding wear across all tested loads and oxidation behaviour up to 800 °C of the composites were better than that of CP-Ti. Ti-6Ni-10TiCN composite exhibited the highest wear and oxidation resistance across the tested loads and oxidation condition, respectively. This was attributed to the uniform distribution of the reinforcing phases and the formation of the protective oxide layer on the surface of the sintered composites.

KW - In-situ TiN

KW - Oxidation

KW - Spark plasma sintering

KW - TiCN nanoceramic

KW - Titanium matrix composites

KW - Tribology

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SN - 0925-8388

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 161857

ER -

Microstructure, tribological and oxidation behaviour of spark plasma sintered Ti-Ni-xTiCN composites

Abstract

Keywords

ASJC Scopus subject areas

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