Alocrom 1200 is a CHROMATE CONVERSION COATING system for Aluminium and aluminium alloys.
We use a proprietary coating system which deposits a chromate coating onto an etched surface. Chromate coating is recommended for use prior to painting, but because of its ability to prevent atmospheric oxidation is often used without further finishing. Providing the thickness of coating is properly specified and regulated, it is possible for the conductive properties of the treated material to be sufficient to allow earth bonding without further mechanical treatment of the aluminium surface. Customers should refer to DEF-STAN 03-18 or MIL-C-5541 for further information as to the suitability of this treatment for their applications. We have used this treatment for a number of years on earth bonding to aluminium finished devices and it has been very successful. Regards Rob From: John Woodgate [mailto:[email protected]] Sent: 06 February 2003 09:47 To: [email protected] Subject: Re: Maintaining conductivity of freshly machined aluminum I read in !emc-pstc that Scott Lacey <[email protected]> wrote (in <3E4144F6.3539.FA6BC@localhost>) about 'Maintaining conductivity of freshly machined aluminum' on Wed, 5 Feb 2003: >Does anyone know of any conductive coating, preferably spray-on, >that could be used on mating aluminum chassis surfaces? We >manufacture (in very low volume) test equipment that is housed in a >commercially manufactured anodized aluminum enclosure. Our >machine shop mills the anodizing from mating surfaces and adds >additional screw holes to improve bonding. The concern is that the >surfaces will not remain conductive over time. Is there any evidence for such an effect (assuming a normal atmosphere, not especially spiked with corrosive gases)? I suspect not. If there is, than many existing products may be vulnerable! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Visit our Internet site at http://www.reuters.com Get closer to the financial markets with Reuters Messaging - for more information and to register, visit http://www.reuters.com/messaging Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Reuters Ltd. This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
