High temperature oxidation of hot-pressed aluminium nitride by water vapour

Tsugio Sato, Kiyotaka Haryu, Tadashi Endo, Masahiko Shimada

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    17 Citations (Scopus)


    Hot pressed AIN without additives was oxidized et 1100 to 1400°C in dry air, wet air and wet nitrogen gas atmospheres with 1.5 to 20 kPa of water vapour pressure. AIN was oxidized by both air and water vapour, and formed α-Al2O3 film on the surface above 1150°C. The oxidation kinetics in air were parabolic end were promoted by water vapour. On the other hand, the oxidation kinetics in wet nitrogen were linear below 1250°C and parabolic above 1350°C. The oxidation rate in wet nitrogen was much greater than that in wet air. The rate of oxidation increased with increasing temperature until 1350°C, and then decreased. The parabolic rate constant decreased with increasing temperature and increased linearly with increasing water vapour pressure. The linear rate constant at 1150 to 1250° C increased with increasing the temperature with the apparent activation energy of 250 kJ mol-1. The relation between the linear rate constant and water vapour pressure was of the Langmuir type.

    Original languageEnglish
    Pages (from-to)2277-2280
    Number of pages4
    JournalJournal of Materials Science
    Issue number6
    Publication statusPublished - 1987 Jun 1

    ASJC Scopus subject areas

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering


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