Joined body of aluminum nitride series ceramics, method of joining aluminum nitride series ceramics and joining agent
US6261708A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A novel method is provided for joining substrates made of aluminum nitride series ceramics to each other, which can perform the joining substantially without leaving an intervening third phase other than aluminum nitride series ceramics at the joining interface of the substrates. The method is performed, for example, by providing a joining agent 3 containing at least an aluminum nitride series ceramics and a flux between the substrates 1 and 2, heat treating the joining agent to eutectically melt the aluminum nitride series ceramics and the flux, then precipitating a reprecipitated phase of the aluminum nitride series ceramics at the joining interface of the substrates. Alternatively, the method is performed by providing a joining agent 3 containing at least an aluminum nitride series ceramics and a flux between the substrates 1 and 2, heating the joining agent to a temperature range T1 which is higher than the melting point of the flux, subsequently heating the joining agent to a temperature range T2 which is higher than the temperature range T1 to exit the components of the flux from the joining interface, ten precipitating the reprecipitated phase of the aluminum nitride series …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.