Improvement in oxidation resistance of TiB2 by formation of protective SiO2 layer on surface

Young Hag Koh, Hae Won Kim, Hyoun Ee Kim

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

To improve the oxidation resistance of TiB2 material, dense silica (SiO2) layer was caused to form on the surface. The coating layer was formed on the surface by exposing the specimens next to a bed of SiC powder in a flowing H2 containing 0.1% H2O at 1450°C. Part of SiO2 "smoke", generated by a reaction between the SiC powder and H2O in the He gas stream, was deposited on the sample surface to form a dense and uniform SiO2 layer. Beneath the SiO2 layer, an interracial layer composed of Ti2O3 and B2O3 was formed. Oxidation resistance of the specimen was improved markedly by the coating layers. The coating layers enhanced the oxidation resistance through the retardation of oxygen transport and also through the consumption of oxygen by a reaction with Ti2O3 to form TiO2.

Original languageEnglish
Pages (from-to)132-137
Number of pages6
JournalJournal of Materials Research
Volume16
Issue number1
DOIs
Publication statusPublished - 2001 Jan
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Improvement in oxidation resistance of TiB<sub>2</sub> by formation of protective SiO<sub>2</sub> layer on surface'. Together they form a unique fingerprint.

Cite this