Wear and corrosion properties of spark plasma sintered Ti6Al4V– Al2O3 composites

Elsie Nsiah-Baafi; Anthony Andrews; Saliou Diouf; Peter Apata Olubambi

doi:10.1016/j.oceram.2022.100260

Wear and corrosion properties of spark plasma sintered Ti6Al4V– Al₂O₃ composites

Elsie Nsiah-Baafi, Anthony Andrews, Saliou Diouf, Peter Apata Olubambi

Metallurgy

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

3 Citations (Scopus)

Abstract

Applications of Ti6Al4V alloy are limited due to its poor wear resistance. The wear resistance properties can be improved by the addition of ceramics to form metal matrix composites. The wear and corrosion resistance properties of Spark Plasma Sintered Ti6Al4V–Al₂O₃ composites have been investigated. The composites were sintered at 50 MPa at a temperature of 850 ^oC for 5 min in a vacuum environment. The composite samples were characterised based on microstructure, relative density and hardness. The wear tests were conducted in a dry environment under varying sliding loads whilst potentiodynamic polarization behaviour was carried out in 3.5 wt% NaCl. A maximum microhardness of 424 HV_0.1 was attained at 10 wt% Al₂O₃ addition. Ti6Al4V reinforced with 3 wt% Al₂O₃ exhibited improved hardness, wear resistance, and corrosion resistance in a 3% NaCl environment.

Original language	English
Article number	100260
Journal	Open Ceramics
Volume	10
DOIs	https://doi.org/10.1016/j.oceram.2022.100260
Publication status	Published - Jun 2022

Keywords

AlO
Corrosion resistance
Dry sliding wear
Spark plasma sintering
Ti6Al4V

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Materials Chemistry
Biomaterials

Access to Document

10.1016/j.oceram.2022.100260

Cite this

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title = "Wear and corrosion properties of spark plasma sintered Ti6Al4V– Al2O3 composites",

abstract = "Applications of Ti6Al4V alloy are limited due to its poor wear resistance. The wear resistance properties can be improved by the addition of ceramics to form metal matrix composites. The wear and corrosion resistance properties of Spark Plasma Sintered Ti6Al4V–Al2O3 composites have been investigated. The composites were sintered at 50 MPa at a temperature of 850 oC for 5 min in a vacuum environment. The composite samples were characterised based on microstructure, relative density and hardness. The wear tests were conducted in a dry environment under varying sliding loads whilst potentiodynamic polarization behaviour was carried out in 3.5 wt% NaCl. A maximum microhardness of 424 HV0.1 was attained at 10 wt% Al2O3 addition. Ti6Al4V reinforced with 3 wt% Al2O3 exhibited improved hardness, wear resistance, and corrosion resistance in a 3% NaCl environment.",

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AU - Diouf, Saliou

AU - Olubambi, Peter Apata

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