Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2005-Apr-04
Gilgert, KH: AUTHOR [+2]
The sinter block is a ceramic sintering component which can be used to sinter multi-layer ceramic/metal substrates.
block is a ceramic sintering component which
can be used to sinter multi-layer ceramic/metal substrates.
component is unique because it provides the necessary
mechanical, thermal, and fluid configuration for ceramic sintering in
a one- piece structure.
block is constructed of a porous aluminum oxide
ceramic. It has gas flow channels running horizontally, which can be
staggered to provide for gas mixing during sintering. See Fig. 1.
Gas flow channels can be of different configurations depending on gas
flow requirements. See Fig. 2. Its configuration is obtained by:
1. Pressing the aluminum oxide material into blocks of a speci
fied purity, porosity, and permeability.
2. Machining the blocks to provide the desired gas flow
3. Cementing the machines pieces, using a cement consisting of
aluminum oxide in slurry form with a fluxing agent.
4. Firing the cemented laminate under load to provide the one-
5. Finish machining (grinding) the fired piece to specified
dimensions and tolerances required to perform sintering.
block, as a single component, provides the following
1. The permeable surfacers allow diffusion of organics through
its surfaces, in contact with the product, into the gas flow
channels. In the gas flow channels, the organics are mixed with the