Affordable Access

Publisher Website

Formation of titanium carbide on graphite via powder immersion reaction assisted coating

Materials Science and Engineering A
Publication Date
DOI: 10.1016/j.msea.2005.01.011
  • Graphite
  • Reactive Coating
  • Titanium Carbide
  • Reaction Kinetics


Abstract The surface of graphite was modified employing powder immersion reaction assisted coating (PIRAC) method. Graphite plates were immersed into Ti powder and annealed at 800–1000 °C. Crystalline iodine was admixed to Ti powder in order to accelerate the transfer of Ti atoms onto the graphite surface. As a result of interaction between Ti and graphite, continuous Ti carbide coatings were formed with a thin layer of stiochiometric TiC on the graphite substrate/coating interface and Ti-rich TiC 1− x in the outer part of the coating with concentration of carbon decreasing towards the surface of the coating. The coating was found to grow by a parabolic law with the kinetic constant, k = 3.7 × 10 −8 exp(−160,000/ RT) m 2/s, the process being controlled by diffusion along fast diffusion paths. At low iodine concentrations and short exposures the amount of admixed iodine affected the rate of titanium carbide coating growth. A kinetic model of the process of coating growth is proposed.

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times

More articles like this

Titanium nitride coating on nickel produced by a p...

on Surface and Coatings Technolog... Jan 01, 2006

Surface modification of titanium alloy orthopaedic...

on Materials Science and Engineer... Jan 01, 1999

Titanium nitride coatings on surgical titanium all...

on Surface and Coatings Technolog... Jan 01, 2000

In situ formation of titanium carbide in titanium...

on Composites Part A Applied Scie... Jan 01, 2001
More articles like this..