Refractories and Industrial Ceramics

, Volume 40, Issue 7–8, pp 338–340 | Cite as

Effect of the method of fabricating SiC, Si3N4, and a1n specimens on their resistance to hightemperature oxidation

  • S. F. Korablev
  • I. R. Korableva


The methods of high-pressure sintering (5 GPa) and, for comparison, conventional hot pressing are used for fabricating high-density specimens from SiC, Si3N4, and A1N with the use of activating additives and without them. The high-temperature oxidation is studied by the method of thermogravimetry at 1400°C with a 150-min hold. The introduction of additives in order to activate the sintering increases the resistance of hot-pressed specimens to high-temperature oxidation and does not influence the stability of materials obtained in a high-pressure apparatus. The corrosion resistance of materials sintered under a high pressure turns out to be much higher than that of hot-pressed materials, which is connected with the formation of superfine-grained densely fit oxide films


Boron Nitride Aluminium Nitride Scale Resistance Large Reaction Volume Polytype Form 
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Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • S. F. Korablev
    • 1
    • 2
  • I. R. Korableva
    • 1
    • 2
  1. 1.National Technical UniversityUkraine
  2. 2.Institute of Problems of Material Science of the National Academy of Sciences of UkraineUkraine

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