Journal of Materials Science

, Volume 27, Issue 1, pp 191–196 | Cite as

Effects of additive gases on radio-frequency plasma sintering of alumina

  • Ming Yung Chen
  • D. L. Johnson
Papers

Abstract

Pure and 0.25 wt% MgO-doped alumina powder compacts were sintered using a radio-frequency induction-coupled argon plasma. The effects of additive oxygen, hydrogen, nitrogen and water were investigated by injecting varying amounts of each gas during sintering. The addition of diatomic gases or water vapour to argon gas during plasma sintering increased the temperature and sintered density of the specimens. Water vapour showed the strongest effect, followed by hydrogen, nitrogen and then oxygen. The presence of MgO dopant resulted in greater density and a lower sample temperature than those of the pure material.

Keywords

Alumina Argon Water Vapour Powder Compact Sample Temperature 

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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • Ming Yung Chen
    • 1
  • D. L. Johnson
    • 2
  1. 1.Wright Research and Development CenterMLBMDaytonUSA
  2. 2.Department of Materials Science and EngineeringNorthwestern UniversityEvanstonUSA

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