
钕铁硼磁铁
钕铁硼 (NdFeB) 磁铁或钕磁铁是现今能量最高的材料,有不同形状、尺寸和牌号的多种产品供选择。钕铁硼磁铁应用范围广,包括高性能电机、无刷直流电机、磁力分选、磁共振成像、传感器、开关和扬声器。
现在,Arnold 可以提供完全符合《美国联邦国防采购条例补充》(《约翰·S·麦凯恩国防授权法案》- NDAA 2019 项下DFARS 225.7018 关于特定磁铁和钨的采购限制)的钕铁硼。
磁性能将视压实期间的对齐方向以及尺寸和形状而有所不同。从下表下载单独的规格表,或获取针对特定等级及其磁性能的完整钕磁铁目录,包括针对 HcJ(矫顽磁性、抗退磁性)的 Br(和能量产品)平衡。关于 GBD 钕磁铁等级,请见下文。
最高使用温度和腐蚀
例如,确定是否使用钕铁硼磁铁而非我们的 RECOMA® 钐钴 磁铁是一个涉及应用最高温度、典型使用温度下所需的磁力输出以及系统总成本的函数。
钕铁硼磁铁因其腐蚀特性而存在某些限制。在潮湿应用中,强烈建议采用保护涂层。已成功采用的涂层包括环氧涂层、镀镍涂层以及此类涂层的组合。Arnold 还可将聚对二甲苯涂层涂覆于钕铁硼磁铁。涂层的有效性取决于基础材料的质量。Arnold 针对基础材料的耐腐蚀性能评估了多家制造商,且只供应严格控制下所生产的经许可高度耐腐蚀材料。
可选钕磁铁等级
编辑属性: | Br | Br | HcB | HcB | HcJ | HcJ | BHmax | BHmax | 可逆温度系数 | 可逆温度系数 | 温度 |
---|---|---|---|---|---|---|---|---|---|---|---|
牌号
|
典型 mT
|
典型规格
|
最小值(千安/米)
|
最小值(奥斯特)
|
最小值(千安/米)
|
最小值(奥斯特)
|
典型 kJ/m3
|
典型磁能积
|
Br %/°C
|
HcJ %/°C
|
最高温度 (°C)
|
1,210
|
12,100
|
860
|
10,800
|
955
|
12,000
|
283
|
35
|
-0.12
|
-0.618
|
80
|
|
1,260
|
12,600
|
860
|
10,800
|
955
|
12,000
|
306
|
38
|
-0.12
|
-0.75
|
80
|
|
1,285
|
12,850
|
923
|
11,600
|
955
|
12,000
|
318
|
40
|
-0.12
|
-0.75
|
80
|
|
1,315
|
13,150
|
860
|
10,800
|
955
|
12,000
|
334
|
42
|
-0.12
|
-0.75
|
80
|
|
1,350
|
13,500
|
860
|
10,800
|
955
|
12,000
|
350
|
44
|
-0.12
|
-0.75
|
80
|
|
1,400
|
14,000
|
836
|
10,500
|
955
|
12,000
|
390
|
49
|
-0.12
|
-0.75
|
80
|
|
1,425
|
14,250
|
836
|
10,500
|
955
|
12,000
|
390
|
49
|
-0.12
|
-0.75
|
80
|
|
1,450
|
14,500
|
836
|
10,500
|
876
|
11,000
|
406
|
51
|
-0.12
|
-0.75
|
60
|
|
1,490
|
14,900
|
716
|
9,000
|
876
|
11,000
|
430
|
54
|
-0.12
|
-0.75
|
60
|
|
1,175
|
11,750
|
836
|
10,500
|
1,114
|
14,000
|
267
|
34
|
-0.12
|
-0.675
|
100
|
|
1,210
|
12,100
|
868
|
10,900
|
1,114
|
14,000
|
283
|
35
|
-0.12
|
-0.675
|
100
|
|
1,260
|
12,600
|
899
|
11,300
|
1,114
|
14,000
|
307
|
39
|
-0.12
|
-0.675
|
100
|
|
1,285
|
12,850
|
923
|
11,600
|
1,114
|
14,000
|
322
|
40
|
-0.12
|
-0.675
|
100
|
|
1,315
|
13,150
|
955
|
12,000
|
1,114
|
14,000
|
338
|
42
|
-0.12
|
-0.675
|
100
|
|
1,350
|
13,500
|
971
|
12,200
|
1,114
|
14,000
|
354
|
44
|
-0.12
|
-0.675
|
100
|
|
1,395
|
13,950
|
995
|
12,500
|
1,114
|
14,000
|
378
|
48
|
-0.12
|
-0.675
|
100
|
|
1,105
|
11,050
|
796
|
10,000
|
1,353
|
17,000
|
235
|
30
|
-0.12
|
-0.605
|
120
|
|
1,175
|
11,750
|
836
|
10,500
|
1,353
|
17,000
|
267
|
34
|
-0.12
|
-0.605
|
120
|
|
1,210
|
12,100
|
868
|
10,900
|
1,353
|
17,000
|
283
|
35
|
-0.12
|
-0.605
|
120
|
|
1,260
|
12,600
|
899
|
11,300
|
1,353
|
17,000
|
307
|
39
|
-0.12
|
-0.605
|
120
|
|
1,285
|
12,850
|
923
|
11,600
|
1,353
|
17,000
|
322
|
40
|
-0.12
|
-0.605
|
120
|
|
1,300
|
13,000
|
955
|
12,000
|
1,353
|
17,000
|
330
|
41
|
-0.12
|
-0.605
|
120
|
|
1,350
|
13,500
|
971
|
12,200
|
1,353
|
17,000
|
354
|
44
|
-0.12
|
-0.605
|
120
|
|
1,390
|
13,900
|
1,011
|
12,700
|
1,353
|
17,000
|
378
|
48
|
-0.12
|
-0.605
|
120
|
|
1,415
|
14,150
|
1,035
|
13,000
|
1,274
|
16,000
|
390
|
49
|
-0.12
|
-0.605
|
120
|
|
1,125
|
11,250
|
811
|
10,200
|
1,592
|
20,000
|
243
|
31
|
-0.12
|
-0.535
|
150
|
|
1,175
|
11,750
|
844
|
10,600
|
1,592
|
20,000
|
267
|
34
|
-0.12
|
-0.535
|
150
|
|
1,210
|
12,100
|
876
|
11,000
|
1,592
|
20,000
|
283
|
35
|
-0.12
|
-0.535
|
150
|
|
1,260
|
12,600
|
907
|
11,400
|
1,592
|
20,000
|
307
|
39
|
-0.12
|
-0.535
|
150
|
|
1,285
|
12,850
|
939
|
11,800
|
1,592
|
20,000
|
322
|
40
|
-0.12
|
-0.535
|
150
|
|
1,310
|
13,100
|
955
|
12,000
|
1,592
|
20,000
|
330
|
41
|
-0.12
|
-0.535
|
150
|
|
1,350
|
13,500
|
979
|
12,300
|
1,592
|
20,000
|
354
|
44
|
-0.12
|
-0.535
|
150
|
|
1,390
|
13,900
|
995
|
12,500
|
1,512
|
19,000
|
374
|
47
|
-0.12
|
-0.535
|
150
|
|
1,075
|
10,750
|
764
|
9,600
|
1,990
|
25,000
|
227
|
29
|
-0.12
|
-0.465
|
180
|
|
1,125
|
11,250
|
812
|
10,200
|
1,990
|
25,000
|
243
|
31
|
-0.12
|
-0.465
|
180
|
|
1,175
|
11,750
|
852
|
10,700
|
1,990
|
25,000
|
267
|
34
|
-0.12
|
-0.465
|
180
|
|
1,210
|
12,100
|
860
|
10,080
|
1,990
|
25,000
|
283
|
35
|
-0.12
|
-0.465
|
180
|
|
1,260
|
12,600
|
876
|
11,000
|
1,990
|
25,000
|
307
|
39
|
-0.12
|
-0.465
|
180
|
|
1,285
|
12,850
|
915
|
11,500
|
1,990
|
25,000
|
318
|
40
|
-0.12
|
-0.465
|
180
|
|
1,310
|
13,100
|
955
|
12,000
|
1,990
|
25,000
|
330
|
41
|
-0.12
|
-0.465
|
180
|
|
1,350
|
13,500
|
955
|
12,500
|
1,910
|
24,000
|
358
|
45
|
-0.12
|
-0.465
|
180
|
|
1,085
|
10,850
|
780
|
9,800
|
2,388
|
30,000
|
227
|
29
|
-0.12
|
-0.42
|
200
|
|
1,125
|
11,250
|
812
|
10,200
|
2,388
|
30,000
|
243
|
31
|
-0.12
|
-0.42
|
200
|
|
1,165
|
11,650
|
820
|
10,300
|
2,388
|
30,000
|
267
|
34
|
-0.12
|
-0.42
|
200
|
|
1,200
|
12,000
|
836
|
10,500
|
2,388
|
30,000
|
279
|
35
|
-0.12
|
-0.42
|
200
|
|
1,235
|
12,350
|
899
|
11,300
|
2,388
|
30,000
|
303
|
38
|
-0.12
|
-0.42
|
200
|
|
1,270
|
12,700
|
915
|
11,500
|
2,388
|
30,000
|
314
|
39
|
-0.12
|
-0.42
|
200
|
|
1,075
|
10,750
|
780
|
9,800
|
2,706
|
34,000
|
223
|
28
|
-0.12
|
-0.393
|
220
|
|
1,120
|
11,200
|
812
|
10,200
|
2,706
|
34,000
|
239
|
30
|
-0.12
|
-0.393
|
220
|
|
1,195
|
11,950
|
883
|
11,100
|
2,706
|
34,000
|
275
|
35
|
-0.12
|
-0.393
|
220
|
晶界扩散 (GBD)
“GBD 钕”磁铁通过减少镝 (Dy) (GBDD) 和铽 (Tb) (GBDT) 的使用量,以适中的成本实现高能量密度和温度稳定性。与传统的钕磁铁制造方法相比,该工艺可提高矫顽力,同时抑制对剩磁的不利影响。该工艺适用于厚度小于 6 毫米的较小磁铁或层压材料。对于工作温度接近 180°C 的高频应用,建议考虑使用本产品。获取 GBD 钕铁硼的完整目录,了解特定牌号及其磁性。
可提供的晶界扩散钕铁硼牌号
属性: | Br | Br | HcB | HcB | HcJ | HcJ | BHmax | BHmax | 可逆温度系数 | 可逆温度系数 | 温度 |
---|---|---|---|---|---|---|---|---|---|---|---|
牌号
|
典型 mT
|
典型规格
|
最小值(千安/米)
|
最小值(奥斯特)
|
最小值(千安/米)
|
最小值(奥斯特)
|
典型 kJ/m3
|
典型磁能积
|
Br %/°C
|
HcJ %/°C
|
最高温度 (°C)
|
1,350
|
13,500
|
979
|
12,300
|
1,592
|
20,000
|
354
|
44
|
-0.12
|
-0.549
|
150
|
|
1,390
|
13,900
|
1,011
|
12,700
|
1,592
|
20,000
|
374
|
47
|
-0.12
|
-0.549
|
150
|
|
1,425
|
14,250
|
836
|
10,500
|
1,592
|
20,000
|
390
|
49
|
-0.12
|
-0.549
|
150
|
|
1,440
|
14,400
|
1,067
|
13,400
|
1,592
|
20,000
|
402
|
51
|
-0.12
|
-0.549
|
150
|
|
1,460
|
14,600
|
1,083
|
13,600
|
1,512
|
19,000
|
418
|
53
|
-0.12
|
-0.549
|
150
|
|
1,480
|
14,800
|
1,098
|
13,800
|
1,512
|
19,000
|
426
|
54
|
-0.12
|
-0.549
|
150
|
|
1,390
|
13,900
|
1,011
|
12,700
|
1,512
|
22,000
|
374
|
47
|
-0.12
|
-0.549
|
150
|
|
1,425
|
14,250
|
836
|
10,500
|
1,751
|
22,000
|
390
|
49
|
-0.12
|
-0.549
|
150
|
|
1,440
|
14,400
|
1,067
|
13,400
|
1,751
|
22,000
|
402
|
51
|
-0.12
|
-0.549
|
150
|
|
1,460
|
14,600
|
1,083
|
13,600
|
1,751
|
21,000
|
418
|
53
|
-0.12
|
-0.549
|
150
|
|
1,260
|
12,600
|
876
|
11,000
|
1,990
|
25,000
|
306.5
|
39
|
-0.12
|
-0.51
|
180
|
|
1,270
|
12,700
|
915
|
11,500
|
1,990
|
25,000
|
318
|
40
|
-0.12
|
-0.51
|
180
|
|
1,310
|
13,100
|
955
|
12,000
|
1,990
|
25,000
|
330
|
41
|
-0.12
|
-0.465
|
180
|
|
1,350
|
13,500
|
979
|
12,300
|
1,990
|
25,000
|
354
|
44
|
-0.12
|
-0.465
|
180
|
|
1,390
|
13,900
|
1,011
|
12,700
|
1,990
|
25,000
|
374
|
47
|
-0.12
|
-0.465
|
180
|
|
1,410
|
14,100
|
1,051
|
13,200
|
1,990
|
25,000
|
386
|
49
|
-0.12
|
-0.465
|
180
|
|
1,430
|
14,300
|
1,067
|
13,400
|
1,990
|
25,000
|
394
|
50
|
-0.12
|
-0.51
|
180
|
|
1,450
|
14,500
|
1,075
|
13,500
|
1,910
|
24,000
|
418
|
53
|
-0.12
|
-0.51
|
180
|
|
1,310
|
13,100
|
955
|
12,000
|
2,149
|
27,000
|
330
|
41
|
-0.12
|
-0.465
|
180
|
|
1,350
|
13,500
|
979
|
12,300
|
2,149
|
27,000
|
354
|
44
|
-0.12
|
-0.465
|
180
|
|
1,390
|
13,900
|
1,011
|
12,700
|
2,419
|
27,000
|
374
|
47
|
-0.12
|
-0.465
|
180
|
|
1,410
|
14,100
|
1,051
|
13,200
|
2,449
|
27,000
|
386
|
49
|
-0.12
|
-0.465
|
180
|
|
1,430
|
14,300
|
1,067
|
13,400
|
1,990
|
25,000
|
394
|
50
|
-0.12
|
-0.51
|
180
|
|
1,125
|
11,250
|
812
|
10,200
|
2,388
|
30,000
|
243
|
31
|
-0.12
|
-0.472
|
200
|
|
1,165
|
11,650
|
820
|
10,300
|
2,388
|
30,000
|
267
|
34
|
-0.12
|
-0.472
|
200
|
|
1,200
|
12,000
|
836
|
10,500
|
2,388
|
30,000
|
279
|
35
|
-0.12
|
-0.472
|
200
|
|
1,260
|
12,600
|
876
|
11,000
|
2,388
|
30,000
|
306.5
|
39
|
-0.12
|
-0.472
|
200
|
|
1,270
|
12,700
|
915
|
11,500
|
2,388
|
30,000
|
318
|
40
|
-0.12
|
-0.472
|
200
|
|
1,310
|
13,100
|
955
|
12,000
|
2,388
|
30,000
|
330
|
41
|
-0.12
|
-0.472
|
200
|
|
1,310
|
13,100
|
971
|
12,200
|
2,388
|
30,000
|
338
|
43
|
-0.12
|
-0.472
|
200
|
|
1,360
|
13,600
|
1,011
|
12,700
|
2,388
|
30,000
|
362
|
46
|
-0.12
|
-0.472
|
200
|
|
1,385
|
13,850
|
1,027
|
12,900
|
2,388
|
30,000
|
370
|
47
|
-0.12
|
-0.472
|
200
|
|
1,260
|
12,600
|
876
|
11,000
|
2,547
|
32,000
|
306.5
|
40
|
-0.12
|
-0.472
|
200
|
|
1,285
|
12,850
|
915
|
11,500
|
2,547
|
32,000
|
318
|
40
|
-0.12
|
-0.472
|
200
|
|
1,310
|
13,100
|
971
|
12,200
|
2,547
|
32,000
|
338
|
42
|
-0.12
|
-0.472
|
200
|
|
1,360
|
13,600
|
1,011
|
12,700
|
2,547
|
32,000
|
362
|
45
|
-0.12
|
-0.472
|
200
|
|
1,125
|
11,250
|
812
|
10,200
|
2,706
|
34,000
|
243
|
31
|
-0.12
|
-0.449
|
220
|
|
1,165
|
11,650
|
820
|
10,300
|
2,706
|
34,000
|
267
|
34
|
-0.12
|
-0.449
|
220
|
|
1,200
|
12,000
|
836
|
10,500
|
2,706
|
34,000
|
279
|
35
|
-0.12
|
-0.449
|
220
|
|
1,260
|
12,600
|
876
|
11,000
|
2,706
|
34,000
|
306.5
|
39
|
-0.12
|
-0.449
|
220
|
|
1,270
|
12,700
|
915
|
11,500
|
2,706
|
34,000
|
318
|
40
|
-0.12
|
-0.449
|
220
|
|
1,250
|
12,500
|
923
|
11,600
|
2,786
|
35,000
|
298.5
|
38
|
-0.12
|
-0.472
|
200
|
|
1,275
|
12,750
|
955
|
12,000
|
2,786
|
35,000
|
322
|
40
|
-0.12
|
-0.472
|
200
|
|
1,320
|
13,200
|
979
|
12,300
|
2,786
|
35,000
|
346
|
43
|
-0.12
|
-0.472
|
200
|
|
1,235
|
12,350
|
915
|
11,500
|
2,945
|
37,000
|
306.5
|
39
|
-0.12
|
-0.472
|
200
|
|
1,275
|
12,750
|
955
|
12,000
|
2,945
|
37,000
|
323.5
|
41
|
-0.12
|
-0.472
|
200
|