The characterisation and properties of chromised titanium alloys

A. Taylor, K. D. Ralston, X. Xia, N. Birbilis, P. D. Hodgson, D. M. Fabijanic

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

Chromium enrichment of the surface of titanium alloys via fluid-bed reactor chemical vapour deposition (FBR-CVD) has been investigated. The coatings obtained on commercial purity (CP) titanium and a Ti6Al4V alloy were characterised using GDOES, BS-SEM, and XRD. It was revealed that the modified surface on both alloys consisted of a 5-20 μm thick porous deposition layer with >70 wt% chromium content and an inner 30-200μm thick low chromium-content diffusion zone. The surface hardness increased as a result of chromising and anodic polarisation testing revealed the general corrosion resistance is not compromised by chromium-enrichment. This surface treatment has the potential to improve the burn resistance of titanium alloys in aerospace application.

Original languageEnglish
Title of host publicationMaterials Innovation in Surface Engineering
Editors P. Howard, P. Huggett, R. Wuhrer
Pages5-11
Number of pages7
Publication statusPublished - 2011
EventMaterials Innovations in Surface Engineering Conference - Melbourne, VIC, Australia
Duration: 18 Oct 201120 Oct 2011

Publication series

NameMaterials Forum
PublisherInstitute of Materials Engineering Australasia Pty. Ltd.
Volume35
ISSN (Print)1447-6738
ISSN (Electronic)1447-6738

Conference

ConferenceMaterials Innovations in Surface Engineering Conference
Country/TerritoryAustralia
CityMelbourne, VIC
Period18/10/1120/10/11

Keywords

  • Chemical vapour deposition
  • Chromising
  • Fluid-bed reactor
  • Titanium

Cite this