Bonded Neo (MQ1™) magnets are generally coated prior to being delivered to a magnet user. Typically, MQ1™ magnets are coated via an Electrophoresis Coating or Spray Coating method. However, other coatings and coating methods are available if your magnet requires a particular characteristic or operates in a particularly high temperature or corrosive environment.
The following table summarizes a few of the options available along with key attributes of each.
Should you have any questions about which coating is right for your application, please contact us.
|Coating type||Details||Salt Spray Test Results |
|PCT Test Results|
|~20µm||~100hrs||~10hrs||E-coating is the most common coating for MQ1™ magnets; it provides uniform coating thickness and is suitable for many applications|
|Spray coating||~10µm||~30hrs||**||Spray coating is a common coating method for MQ1™ magnets; it is better suited for smaller magnets which are not exposed to corrosive environments|
|Parylene coating||~10µm||~50hrs||~170hrs||Parylene can be used in applications which experience corrosive environments, such as water Parylene coating performs especially well in Salt Spray and PCT Tests|
|Dipping||~5µm||~10hrs||**||Dipping is not a commonly used coating for MQ1™ magnets; the coating is relatively thin, rendering its corrosion protection characteristics rather poor|
|Nickel Plating ("Ni-Plating")||~20µm||~30hrs||~120hrs||While nickel coating is widely used for fully dense sintered magnets, it is not a very common coating for MQ1™ magnets, as the adhesion between the magnet and the nickel plating is not optimal. It is used only in certain applications|
** Test not performed for these coatings due to poor results