Technique Support

1. Magnetization Orientation Of Permanent Magnets

Magnetization Orientation Of Permanent Magnets

2. Surface Treatment Of Neodymium Magnet And The Features

Surface	Coating	Thickness (Microns)	Color	Resistance
Passivation		1	Silver Grey	Temporary Protection
Nickel	Ni+Ni	10-20	Bright Silver	Excellent Against Humidity
	Ni+Cu+Ni
Zinc	Zn	8-20	Bright Blue	Good Against Salt Spray
	C-Zn		Shinny Color	Excellent Against Salt Spray
Tin	Ni+Cu+Sn	15-20	Silver	Superior Against Humidity
Silver	Ni+Cu+Ag	10-20	Silver	Superior Against Humidity
Gold	Ni+Cu+Au	10-20	Gold	Superior Against Humidity
Copper	Ni+Cu	10-20	Gold	Temporary Protection
Epoxy	Epoxy	15-25	Black,Red,Grey	Excellent Against Humidity&Salt Spray
	Ni+Cu+Epoxy
	Zn+Epoxy
Parylene	Parylene	5-20	Grey	Excellent Against Humidity,Salt Spray,Superior Against Solvents,Gases, Fungi and Bacteria,FDA Approved
Chemical	Ni	10-20	Silver Grey	Excellent Against Humidity

3. Physical Properties Of Sintered Neodymium Magnet

Parameter	International Unit	Standard Data
Curie Temperature(Tc)	℃	310-380
Maximum Operating Temperature(Tw)	℃	80-230
Hardness	Hv	620
Electrical Resistivity (ᵨ)	Ω.cm	1.8x10⁻⁴ ~2.0x10⁻⁴
Density(D)	g/m³	7.45~-7.65
Recoil Permeability(µ rec)		1.05
Magnetization Field Strength(Hs)	kA/m	≧2400
	kOe	≧30
Bending Strength	Mpa	295-345
Temp. Coefficient of Br	％℃	-0.11~-0.12
Temp.Coefficient of Hcj	％℃	-0.5~-0.7

4. Expressions Of Common Shaped Magnets

Expressions Of Common Shaped Magnets

Related Permanent Magnet

Neodymium Magnets

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