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Described is a method for the reduction and/or elimination of product defects caused by outgassing of process materials from porous surface structures, such as found on alumina ceramic substrates.
English (United States)
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Sample Preparation Prior to Wet Processing
Described is a method for the reduction and/or elimination of product defects
caused by outgassing of process materials from porous surface structures, such
as found on alumina ceramic substrates.
Prior to nickel plating and gold plating of molybdenum metallurgy on the
multilayer ceramic (MLC), the substrate is immersed in an elevated temperature
bath containing fluorocarbon liquid. The fluorocarbon will enter pores and
displace process materials trapped from prior process operations, leaving clean
pores that will not outgas during subsequent process steps causing blisters,
If the parts are mounted in a rack, the rack can be put into such a bath as an
added in-line process step, as shown in the drawing.
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