EP0147101A2
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EP
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Aluminum nitride-based sintered body of high thermal conductivity
Assignee: Toshiba Corp
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Filing: 1984-12-05
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Granted: —
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Expires: 2004-12-05
Abstract
Abstract An aluminum nitride-based sintered body having a high thermal conductivity and a total oxygen content of 0.01 to 20% by weight which is prepared by mixing a main component of aluminum nitride powder containing 0.001 to 7% by weight of oxygen with 0.01 to 15% by weight of at least one of the group consisting of a powder of a rare earth element and/or powder of a material containing the rate earth element (said 0.01 to 15% by weight being counted on the basis of the content of the rare earth element), and sintering said powder mixture.
Inventors
- 👤 Kazuo Shinozaki
- 👤 Kazuo Anzai
- 👤 Takeshi Takano
- 👤 Akihiko Tsuge
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 21:15
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/581
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
An aluminum nitride-based sintered body having a high thermal conductivity and a total oxygen content of 0.01 to 20% by weight which is prepared by mixing a main component of aluminum nitride powder containing 0.001 to 7% by weight of oxygen with 0.01 to 15% by weight of at least one of the groups consisting of a powder of a rare earth element and/or a powder of a material containing the rare earth element (said 0.01 to 15% by weight being counted on the basis of the content of the rare earth element), and sintering said powder mixture.
Claim 2
Dependent Claim
98 words
An aluminum nitride-based sintered body having a high thermal conductivity and a total oxygen content of 0.01 to 20% by weight which is prepared by mixing a main component of aluminum nitride powder containing 0.001 to 7% by weight of oxygen with 0.01 to 15% by weight of at least one of the groups consisting of a powder of a rare earth element and/or a powder of a material containing the rare earth element (said 0.01 to 15% by weight being counted on the basis of the content of the rare earth element), and sintering said powder mixture.
Claim 3
Dependent Claim
79 words
The sintered body according to claim 1, characterized in that said aluminum nitride powder contains 0.05 to 4% by weight of oxygen and at least one of the groups consisting of a powder of a rare earth element and/or a powder of a material containing the rare earth element is added to said aluminum nitride sintered body to an extent of 0.14 to 11.3% by weight as counted on the basis of the content of said rare earth element.
Claim 4
Dependent Claim
78 words
The sintered body according to claim 1, characterized in that said aluminum nitride powder contains 0.1 to 3% by weight of oxygen, and of least one of the groups consisting of a powder of a rare earth element and/or a powder of a material containing the rare earth element is added to said aluminum nitride sintered body to an extent of 0.28 to 8.5% by.weight as counted on the basis of the content of said rare earth element.
Claim 5
Dependent Claim
16 words
The sintered body according .to claim 1, characterized in that said rare earth element is yttrium.
Claim 6
Dependent Claim
20 words
The sintered body according to claim 1, characterized in that a material containing said rare earth element is yttrium oxide.
References Cited (Backward Citations)
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