Oxygen partial pressure change with metal titanium powder nitriding under microwave heating

Keiichiro Kashimura, Jun Fukushima, Motoyasu Sato

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Microwave heating was applied to metal titanium powders at high oxygen partial pressure (10-5 atm) and the partial pressure of exhaust-gas were measured using an oxygen sensor made of solid electrolyte. During the application of the heating, the pressure decreased to an order of 10 -10 atm and quickly increased to an order of 10-5 atm and then oxygen emission peaks were observed. Furthermore, the nitriding mechanism was discussed for Ti14O13 model in terms of quantum chemistry. The quantum-chemical simulation showed that Ti-O bonding of titanium oxide is anti-bonding and consists of 3d orbital. The orbital becomes steady state by removing an oxygen atom from the model.

Original languageEnglish
Pages (from-to)181-185
Number of pages5
JournalIsij International
Volume51
Issue number2
DOIs
Publication statusPublished - 2011 Jul 11
Externally publishedYes

Keywords

  • 3d orbital
  • Metal titanium powder
  • Microwave heating
  • Nitriding mechanism
  • Oxygen partial pressure
  • Titanium oxide

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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