Aluminum nitride sintered compact and method for producing same
US10787392B2 · kind B2 · utility
0Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2018 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Jul 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/85
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum nitride sintered compact containing aluminum nitride crystal grains and composite oxide crystal grains containing a rare earth element and an aluminum element, wherein a median diameter of the aluminum nitride crystal grains is 2 μm or less; 10 to 200 intergrain voids having a longest diameter of 0.2 to 1 μm are dispersed in a region of a cross section of 100 μm in square; and the carbon atom content is less than 0.10% by mass. Also disclosed is a method of producing the aluminum nitride sintered compact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.