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High Electrical Insulating Samarium Cobalt Magnets

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High Electrical Insulating Samarium Cobalt Magnets

Name: High Electrical Insulating Samarium Cobalt Magnets
Brand: Rainbow Magnet Ltd.
Rating: 4.6 (4 reviews)

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10yrs

Ningbo, Zhejiang, Australia

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OEM service

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Rainbow Magnet Ltd.

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Product description

Sm2Co17 is the best in the magnetic stability. Commonly used way of dealing with aging, reduce the reversible temperature coefficient.

Samarium cobalt magnets are composed of samarium, cobalt and iron. These rare earth magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs.

According the composition, we divide two of SMCO: Sm2CO17 and SmCo5

According the process, we divide to sintered Smco and bonded Smco

Materials	Grade	Br (Residual induction)	Hcb (Coercive Force)	Hcj (Intrinsic coercive Force)	(BH)max. Max. Energy Product	Max. Operating Temp.	TC Curie Temp.
		(KGs)	(KOe)	(KOe)	(MGOe)	(°c)	(°c)
Sm2Co17	YXG-24H	9.5-10.2	8.7-9.6	≥25	22-24	350	800
Sm2Co17	YXG-26H	10.2-10.5	9.4-10.0	≥25	24-26	350	800
Sm2Co17	YXG-28H	10.3-10.8	9.5-10.2	≥25	26-28	350	800
Sm2Co17	YXG-30H	10.8-11.0	9.9-10.5	≥25	28-30	350	800
Sm2Co17	YXG-32H	11.0-11.3	10.2-10.6	≥25	29-32	350	800
Sm2Co17	YXG-22	9.3-9.7	8.5-9.3	≥18	20-23	300	800
Sm2Co17	YXG-24	9.5-10.2	8.7-9.6	≥18	22-24	300	800
Sm2Co17	YXG-26	10.2-10.5	9.4-10.0	≥18	24-26	300	800
Sm2Co17	YXG-28	10.3--10.8	9.5-10.2	≥18	26-28	300	800
Sm2Co17	YXG-30	10.8-11.0	9.9-10.5	≥18	28-30	300	800
Sm2Co17	YXG-32	11-11.3	10.2-10.7	≥18	29-32	300	800
Sm2Co17	YXG-26M	10.2-10.5	8.5-9.8	12-18	24-26	300	800
Sm2Co17	YXG-28M	10.3-10.8	8.5-10.0	12-18	26-28	300	800
Sm2Co17	YXG-30M	10.8-11.0	8.5-10.5	12-18	28-30	300	800
Sm2Co17	YXG-32M	11.0-11.3	8.5-10.6	12-18	29-32	300	800
Sm2Co17	YXG-24L	9.5-10.2	6.8-9.0	8-12	22-24	250	800
Sm2Co17	YXG-26L	10.2-10.5	6.8-9.4	8-12	24-26	250	800
Sm2Co17	YXG-28L	10.3-10.8	6.8-9.6	8-12	26-28	250	800
Sm2Co17	YXG-30L	10.8-11.5	6.8-10.0	8-12	28-30	250	800
Sm2Co17	YXG-32L	11.0-11.5	6.8-10.2	8-12	29-32	250	800
(SmEr)2(CoTM)17	LTC(YXG-22)	9.4-9.8	8.4-9.0	15-20	21-23	300	840
CE(CoFeCu)	YX-12	7.0-7.4	4.5-4.9	4.5-6.0	10-13	200	450

Sintered Smco auxiliary magnetic and physical properties

Item	Parameters	SmCo5	Sm2Co17
Auxiliary magnetic properties	Temp. coefficient of Br (α(Br))/%/ K-1	-0.05	-0.03
	Temp. coefficient. of Hcj (α(Hcj)/%/ K-1	-0.3	-0.3
	Curie Temperature (Tc)/K	1000	1000
	Recoil Permeability (μrec)	1.05	1.10
physical properties	Density (g/cm-3)	8.2	8.4
	Vickers Hardness Hv/MPa	450	650
	Electrical Resistivity (ρ/Ω•cm)	5.3x10-5	8.5x10-5
	Compressive Strengthδc/MPa	1000	800
	Tensile Strength δb/ MPa	400	350
	Bending Strength δw/MPa	180	150

Compare of the magnetic properties for permanent magnet material

item	Js/T	(BH)m /KJ.m-3	HA /MA.m-1	Tc/℃	RE/TM	TM
SmCo5	1.15	248	32	740	0.166	Co
Sm2Co17	1.56	480	8	890	0.105	Co
Nd2Fe14B	1.61	528	6	310	0.117	Fe

Applications

²aerospace fields,

²military fields,

²high temperature motor,

²automotive sensors,

²variety of magnetic drive,

²magnetic drive pump,

²microwave devices.

²Computer disc drives

²Sensors

²Radar

²Traveling wave tubes

² Satellite systems

²Motors where temporary stability is vital

Sm2Co17:

The (BH)max between 20-32, the maximum operating temperature can be reached 350 °C, the 2:17 has a low temperature coefficient (-0.02% / ℃) and good corrosion resistance, magnetic properties is more than NdFeB magnets when in high working temperatures,

Sm2co17: not only has a high intrinsic saturation magnetic induction, but also good anti-oxidation.

The Curie temperature is high to 840-870 degrees, higher than Smco5.

The disadvantage is that the process is complex with high costs.

From the products use, we can divide as follows:

1)ultra low temperature coefficient magnets,

2)high-temperature magnets,

3)radiation orientation and radiation multi-polar orientation of the ring magnets,

4)high electrical insulating magnets.

This is high electrical insulating magnets: in the high-tech fields, such as nuclear magnetic resonance, nuclear energy generation and microwave field, some devices require the permanent magnet must be long-term work has a high frequency alternating magnetic field environment, high electrical insulating magnetsthe best anti-eddy current loss performance, and use of this material D70XD30X900mm insulation cylinder has been successfully used in nuclear magnetic resonance device.