What is it about?

Si3N4 ceramics have become one of the most promising materials for third-generation semiconductor’s ceramic substrates due to its excellent mechanical and thermal properties. We used Gd2O3-MgSiN2 addditives system to prepared Si3N4 ceramics with the thermal conductivity, flexural strength, and fracture toughness were 124 W⋅m−1⋅k−1, 648 MPa, and 9.12 MPa⋅m1/2, respectively.

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Why is it important?

Comparing with the results in the literature, it was shown that Gd2O3-MgSiN2 was an effective additives system for obtaining Si3N4 ceramics with high thermal conductivity and superior mechanical properties.


Our findings demonstrate that Gd2O3 with medium rare earth ion radius combined with MgSiN2 are effective sintering additives for preparing high strength and high thermal conductivity Si3N4 ceramics, which is of great significance for expanding the selection range of sintering additives for Si3N4 ceramics with superior mechanical and thermal properties.

Shi Fu

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This page is a summary of: Effects of Gd 2 O 3 and MgSiN 2 sintering additives on the thermal conductivity and mechanical properties of Si 3 ..., International Journal of Applied Ceramic Technology, December 2022, Wiley,
DOI: 10.1111/ijac.14279.
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