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US 2026/0200803 A1Published application
Composite sintered body
AssigneeNGK Insulators, Ltd.
InventorsTatsuki MINAMI, Tomohisa MIZOGUCHI, Keita YAMANA, Kazuhiro NOBORI
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Abstract
A composite sintered body includes aluminum nitride and spinel. The composite sintered body includes a plurality of crystal grains each containing aluminum nitride, and a grain boundary positioned between the crystal grains adjacent to each other out of the plurality of crystal grains. A thickness of at least part of the grain boundary is 0.6 nm or more.
Claims7
A composite sintered body, comprising:
- aluminum nitride;
- spinel;
- and
- an additive element,
- wherein the composite sintered body comprises
- a plurality of crystal grains each containing aluminum nitride, and
- a grain boundary positioned between the crystal grains adjacent to each other out of the plurality of crystal grains,
- wherein a thickness of at least part of the grain boundary is 0.6 nm or more, and
- wherein the additive element includes Y, and a content ratio of Y in the composite sintered body is from 0.01 wt % to 0.1 wt %.
6 more elements
Dependencies are inferred from the claim text.