Spark plasma sintered Ti6Al4V-ZrO2 bio-composites: Optimization of ball milling and turbula mixing of powders and their subsequent sintering parameters

N. A. Moshokoa, T. V. Mukhudwana, L. M. Raganya, J. I. Lekgoathi, B. A. Obadele, P. A. Olubambi

Research output: Contribution to journalConference article

Abstract

The use of Ti6Al4V as a biomaterial has been limited due to the dissociation of V and Al ions into the surrounding environment which can cause inflammations, cell damage and toxicity. To prohibit these undesirable challenges, the addition of ZrO 2 into Ti6Al4V was proposed because ZrO2 is biocompatible, it has good wear and corrosion resistant properties, it has low affinity to bacterial colonization and it has high fracture toughness. The aim of this work is to determine the optimum powder synthesising parameters by Tubular mixer and ball mill for fabrication of sintered composites. Powder mixtures were prepared by 49 rpm, 72 rpm and 74rpm for 2, 4 and 8 hours followed by spark plasma sintering at 1100°C at heating rate of 100°C/min for 10 min and pressure of 50 MPa. from the results obtained it was discovered that Tubular mixing of 90 Vol% Ti6Al4V and 10 Vol% ZrO 2 at 72 rpm and ball milling of 90 Vol% Ti6Al4V and 10 Vol% ZrO 2 at 74rpm speed have proved to produce homogeneous admixed powders, which can further produce fully dense SPS compacts with higher microhardness values.

Original languageEnglish
Article number012035
JournalIOP Conference Series: Materials Science and Engineering
Volume430
Issue number1
DOIs
Publication statusPublished - Oct 2 2018
Externally publishedYes
Event2018 Conference of the South African Advanced Materials Initiative, CoSAAMI 2018 - Vanderbijlpark, South Africa
Duration: Oct 23 2018Oct 26 2018

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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