Patent ID: 9340462
Filing Date: 2016-05-17
CPC Classification: B32B,C04B,H01L,H05B,H05K,Y10T

Claim Text:
1. A process for joining ceramic components, said process comprising: selecting at least two green state aluminum nitride (AlN) particle components having different aspect ratios, and containing an amount of a transient liquid phase inducing additive comprising a first rare earth oxide in a concentration of about 1-5% by weight of the AlN present, each of said components having a contact area shaped and dimensioned to intimately contact the contact area of an other of said components when said components are matingly contacted to one another; placing said components in mating contact in a substantially contained atmosphere; co-heating said components to a form a transient liquid phase along said contact areas for about 60 to 300 minutes; allowing a vaporized amount of said first rare earth oxide to form in said substantially contained atmosphere, wherein said vaporized amount has a partial pressure of no more than about 1.0 atmosphere, thereby substantially pressurelessly inhibiting further vaporization of said transient liquid phase during said co-heating; and, cooling said components to room temperature.