Ferromagnetism

NIPLATE® coatings have magnetic properties that vary depending on the phosphorus content deposited in the alloy and the heat treatment to which they are subjected.

Depending on the percentage of phosphorus present, the nickel and phosphorus alloy may have an amorphous or micro-crystalline structure. This atomic structure determines whether or not the coatings have ferromagnetic properties.

NIPLATE® 600 coatings, composed of a nickel alloy with a medium phosphorus content (approximately 7%), are ferromagnetic under all conditions.

In contrast, NIPLATE® 500 coatings, composed of a nickel alloy with a high phosphorus content (about 11%), becomes ferromagnetic only when subjected to a hardening treatment at 250°C or higher.