Hi, Bruce. The inserts seemed to have moved as a result of stress, and the "mud" did crack when that happened. Non-uniform coating application was a major problem.
This nickel coating was replaced in England due to health concerns with nickel particles. We used copper instead, maybe even Spraylat. The copper performed much better than nickel, but required a completely different application method, as there was a tendency to spray to color, not actual thickness. THAT was found out during a MoD audit! Regards, Cortland Richmond ====================== Original Message Follows ==================== >> Date: 20-Apr-99 08:38:22 MsgID: 1067-101814 ToID: 72146,373 From: [email protected] >INTERNET:[email protected] Subj: Cortland reply Chrg: $0.00 Imp: Norm Sens: Std Receipt: No Parts: 1 I would guess that the inserts were added after the application of the conductive coatings, which was a BAD thing to do. Nickel conductive coatings mud crack, and unlike our coppers which will have some elongation, mud cracking due to excessive films build unintentionally or on complex parts are a bane of using nickel. This subject has been known of for years and is really a mute subject at this point. I know of no program in recent years that had this problem using copper. Best regards, Bruce K. Bachman Business Development Manger EMC Solutions Group Spraylat Corporation **Primary Recipient: 72146,373 ====================== End of Original Message ===================== --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
