CLIMAT devices have been used for more than three decades to monitor atmospheric corrosivity. These units have been utilized successfully around the world in marine and industrial type atmospheres. The procedure was originally called a "wire-on-bolt" test, because the devices consist of a copper or steel bolt around which an aluminum wire is wrapped. It is the galvanic effect between aluminum and these bolt materials that accelerates the atmospheric corrosion of aluminum. The procedure is sufficiently sensitive to measure seasonal fluctuations in corrosion rates; the "standard" CLIMAT test usually involves an exposure period of three months duration. Corrosion is accelerated as a result of the large cathode-anode ratio and the relatively long crevice created between the wire and the threads on the rod. The atmospheric corrosion monitoring services provided by RMC corrosion team is based on well-equipped laboratories and experienced professionals.
Corrosion coupons are presently deployed:
On seven Air Bases in Canada (Bagotville, Comox, Goose Bay, Greenwood, North Bay, Trenton, Winnipeg) plus CFB Kingston and CFB Esquimalt
At five environmental air sampling stations in Montreal