The current range of coatings available for NdFeB is as follows:-
Nickel-Copper-Nickel (Ni-Cu-Ni) [standard];
Nickel (Ni);
Epoxy;
Zinc (Zn);
Gold (Au);
Silver (Ag);
Tin (Sn);
Titanium (Ti);
Titanium Nitride (TiN);
Parylene C;
Everlube;
Chrome;
PTFE (also known as "Teflon"; white, black, grey, silvery);
Ni-Cu-Ni plus Epoxy;
Ni-Cu-Ni plus Rubber;
Zn plus Rubber;
Ni-Cu-Ni plus Parylene C;
Ni-Cu-Ni plus PTFE;
Tin (Sn) plus Parylene C;
Zinc Chromate;
Phosphate Passivation; and
Uncoated (bare – recommend vacuum packing as well).
Other coatings may be possible (e.g. we are currently experimenting with Aluminium coating at a R&D level). If you need a different coating, we can look into it.
+180 deg C maximum recommended operating temperature (NxxUH range)
N28UH:- Br=1.13T, Hc=764kA/m, Hci=1990kA/m, (BH)max=207kJ/m^3
N30UH:- Br=1.18T, Hc=812kA/m, Hci=1990kA/m, (BH)max=223kJ/m^3
N33UH:- Br=1.22T, Hc=852kA/m, Hci=1990kA/m, (BH)max=247kJ/m^3
N35UH:- Br=1.25T, Hc=860kA/m, Hci=1990kA/m, (BH)max=263kJ/m^3
N38UH:- Br=1.04T, Hc=899kA/m, Hci=1990kA/m, (BH)max=287kJ/m^3
N40UH:- Br=1.08T, Hc=899kA/m, Hci=1990kA/m, (BH)max=302kJ/m^3