Investigation on densification and microstructure of Al-TiO2 composite produced by Spark plasma sintering

Samuel Ranti Oke, Oluwasegun Eso Falodun, Mphahlele R. Mahlatse, Oladeji Oluremi Ige, Peter Apata Olubambi

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


Aluminium (Al) reinforced with 5 vol% Ti and TiO2 particles ranging from 5 to 20 vol% was fabricated with spark plasma sintering process. Al, Ti and TiO2 starting powders were blended using a high energy ball without balls for 6 h at a rotating speed was 150 rpm. The mixed powders were sintered at 550 oC using SPS in vacuum. The sintering data was obtained during SPS and was used to analyse the densification behaviour. The morphology of the mixed and sintered Al composite was examined using SEM. The composite density and hardness were also evaluated. The results showed that both the pure Al and composites exhibited similar displacement and shrinkage trends with two shrinkage peaks and slight variation in displacement and shrinkage heights. There was no reaction between the Al and Ti during sintering but the SPS have a decomposition effect on the 5 vol% Ti due to possible reaction with the TiO2. The microstructure revealed agglomerates of TiO2 particles. The hardness of the Al composite increased with TiO2 addition.

Original languageEnglish
Pages (from-to)3182-3188
Number of pages7
JournalMaterials Today: Proceedings
Publication statusPublished - 2019
Event9th International Conference of Materials Processing and Characterization, ICMPC 2019 - Hyderabad, Andhra Pradesh, India
Duration: 8 Mar 201910 Mar 2019


  • Aluminium
  • Composite
  • Densification
  • Microstructure
  • Spark Plasma Sintering (SPS)

ASJC Scopus subject areas

  • General Materials Science


Dive into the research topics of 'Investigation on densification and microstructure of Al-TiO2 composite produced by Spark plasma sintering'. Together they form a unique fingerprint.

Cite this