I know of these aluminum disks that are pvd ceramic coated. I can't figure out what they are used for or even why they are coated to be honest. Does anyone know what products are pvd ceramic coated? Our company does a lot of work with pvd coatings for high wear users such as machining tools for extending life. But I understand that there are a lot of coatings used in electonics and optics. Russell Epstein President Advanced Industrial Ceramics 12651 Briar Forest Dr. Houston, Tx 77077 [log in to unmask] Tel: 800-865-0532 Tel: 281-497-4788 Fax: 281-556-9244 --------------------------------------------------------------------------------- TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF TECHNET Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------