Appeal No. 2004-0140
Application No. 10/154,729
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- HIP the two piece to a Nb, Steel, Ta, Cu, Co, W or Ti
flange.
- All parts would be HIP together in one steel can.
Advantages of the invention over prior art:
Below is a list of advantages over prior art:
- Much more material efficient
- Reduction in weight
- Known welding methods for Aluminum
- Ease of fabricating the assembly
- More repeatable process
Features of the invention believed to be new:
There are a couple of features that are believed to be new. One is
the two piece design of the target and the other is the method used to
bond the two materials together.
Appellants assert that the method of making the sputter target assembly,
according to present invention, comprises forming a blank of the first metallic
material into a sputtering insert and forming a blank of the second material formed
into an outer shell. In one embodiment the target assembly is shaped and
subsequently HIPed (hot isostatic press) to diffusion bond the sputtering insert to the
outer shell. In the second embodiment, the target assembly is shaped and the outer
shell and sputtering insert are shrink fitted to provide an interference type fit
between the components. Appellants’ asserted third embodiment, a blank from the
first metallic material and a blank from a second metallic material are first bonded
together to form a blank assembly. Subsequently, the blank assembly is then formed
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