plating, anodizing, & finishing Q&As since 1989
Sealant for porous material before plating
A polymer or other coating to seal a porous ceramic-metal composite surface is needed. A conductive material will be better if available. This coating should withstand stripping chemicals for rework, if necessary. Subsequently, a metal will be plated.
Just to explain further, the porous material is microporous and the pores are not visible under low magnification.Mandar Sunthankar
- Fort Collins, Colorado
There have been several chat room entries and probably a letter or two on vacuum impregnation. Ted might be able to expand on this or provide a couple of contacts.Jim Watts
Hello, Mandar. We added a FAQ which links to a number of letters on vacuum impregnation that may help you.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Hello Mandar, Our company has a process that melts and refreezes the surface of materials removing cracks and sealing porosity. The size of such defects needs to be less than about 0.5 mils. The process does not raise the temperature of the base material.Eugene L. Neau
- Albuquerque, NM
Hello Mandar, My company is a vacuum impregnation sealant and equipment manufacturer. The advantage of the recycling type resin is that you are able to get back over 90% of the sealant you process that typically would end up as effluent, thus saving you money.Joe Babcock
- Ann Arbor, MI, USA