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Some properties of materials of the system Si3N4-ZrO2

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    A study was made of some properties of materials of the system silicon nitride-zirconium dioxide (stabilized with CaO). Specimens for investigation were prepared by the method of hot casting. The amount of binder required was found to be a linear function of the composition of the materials.

  2. 2.

    At a porosity of 20–26%, silicon nitride-zirconium dioxide materials possess good oxidation and thermal fatigue resistance. The latter is linked with their low coefficient of thermal expansion (3.2–7.2).

  3. 3.

    The impact strength of the materials attains a value of 8.2 kg·cm/cm2 and is thus much higher than that of technical ceramics.

  4. 4.

    The compressive strength of the materials grows with rise in ZrO2 content, but the resultant improved strength sharply falls after only five thermal cycles.

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Literature cited

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Authors and Affiliations

  1. Institute of Materials Science, Academy of Sciences of the Ukrainian SSR, Ukrain

    I. M. Finkel'shtein

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  1. I. M. Finkel'shtein
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Translated from Poroshkovaya Metallurgiya, No. 6 (138), pp. 96–99, June, 1974.

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Finkel'shtein, I.M. Some properties of materials of the system Si3N4-ZrO2 . Powder Metall Met Ceram 13, 512–514 (1974). https://doi.org/10.1007/BF00791981

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  • DOI: https://doi.org/10.1007/BF00791981

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