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Direct online ordering options for over 350 types available from stock. Individual advice for custom-made magnets.
Surface protection of permanent magnets made from NdFeB
(IBS material - NeoDeltaMagnet)
The following coating options are available as surface protection for permanent magnets made from NdFeB (NeoDeltaMagnet).

Surface material

Coating thickness
required

Usage
temperature

Surface
hardness

Features

Galv. tin (Sn) > 15 μm > 15 μm soft Very good resistance in a humid environment. The soft surface also protects against mech. effects.
Galv. zinc (Zn) > 10 μm < 200░ C very hard Very good resistance in a humid environment. WIth small magnets, loss of magnetic flux due to magnet. short- circuit of approx. 5%.
Galv. tin on nickel (Ni + Sn) Ni > 5 μm
+
Sn > 10 μm
< 150░ C soft Excellent resistance in a humid environment. Suitable for clean rooms.
Galv. gold on nickel (Ni + Au) Ni 10 - 15 μm
+
Au > 1 μm
< 200░ C medium Excellent resistance in a humid environment. Suitable for clean rooms.

Epoxy spray

black

10 - 15 μm < 180° C medium

Very good resistance in a humid environment.

Parylene polymer coating 0.1 - 50 μm < 220░ C soft Pore-free, even including on the edges. Clear film. Maximum corrosion protection including against saltwater.
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Plastic-coated NdFeB magnets (IBS material - NeoAlphaMagnet) can be given an epoxy resin deposit coating. The coating thickness is 10 - 20 Ám. The colour is pale grey or black. This surface coating has good friction resistance and is resistant in a humid environment, to weak acids and to alkaline media, and especially to salt solutions. Usage temperature approx. + 100░ C.

As a new innovation we are now able to to manufacture magnets to customer dimensions made from a NdFeB material with high corrosion resistance.

Our standard magnets made from NdFeB (NeoDeltaMagnet) are all supplied with a galvanic surface protective coating (tin on nickel).