Khoom Description
Neodymium hlau nplaum yog ib tug tswv cuab ntawm Rare Earth magnet tsev neeg thiab yog cov hlau nplaum uas muaj zog tshaj plaws nyob hauv lub ntiaj teb. Lawv kuj tseem hu ua NdFeB hlau nplaum, lossis NIB, vim tias lawv tau tsim los ntawm Neodymium (Nd), Hlau (Fe) thiab Boron (B). Lawv yog ib qho kev tsim kho tshiab thiab tsuas yog nyuam qhuav dhau los ua pheej yig rau kev siv txhua hnub.
Qib ntawm Neodymium
Neodymium hlau nplaum yog tag nrho cov qib los ntawm cov khoom uas lawv tau ua los ntawm. Raws li txoj cai dav dav, qib siab dua (tus lej tom qab 'N'), cov hlau nplaum muaj zog dua. Qib siab tshaj ntawm neodymium hlau nplaum tam sim no yog N52. Ib tsab ntawv tom qab qib yog hais txog qhov ntsuas kub ntawm cov hlau nplaum. Yog tias tsis muaj cov ntawv tom qab qib, ces cov hlau nplaum yog tus qauv kub neodymium.
Painting / Coatings
Neodymium hlau nplaum yog cov muaj pes tsawg leeg ntawm feem ntau Neodymium, Hlau thiab Boron. Yog tias sab laug raug rau cov khoom, cov hlau hauv cov hlau nplaum yuav xeb. Txhawm rau tiv thaiv cov hlau nplaum los ntawm corrosion thiab ntxiv dag zog rau cov khoom siv hlau nplaum, nws feem ntau yog qhov zoo dua rau cov hlau nplaum kom coated. Muaj ntau yam kev xaiv rau txheej txheej, tab sis npib tsib xee yog qhov ntau thiab feem ntau nyiam. Peb cov hlau nplaum nickel plated yog tiag triple plated nrog txheej ntawm npib tsib xee, tooj liab, thiab npib tsib xee dua. Qhov txheej txheej triple no ua rau peb cov hlau nplaum ntau dua cov hlau nplaum ntau dua li cov nickel plated hlau nplaum. Qee qhov kev xaiv rau txheej yog zinc, tin, tooj liab, epoxy, nyiaj thiab kub. Peb cov hlau nplaum kub plated yog tiag plaub plaub plated nrog npib tsib xee, tooj liab, npib tsib xee thiab cov txheej kub saum toj kawg nkaus.
|
Hom khoom |
Residual Flux Density (Br) |
Lub zog quab yuam (Hc) |
Intrinsic Coercive Force (Hci) |
Max Zog Khoom (BH) max |
|
N35 |
11. 7-12.1 KGs |
>11.0 KOj |
>12 KOj |
33-35 MGOe |
|
N38 |
12. 2-12.6 KGs |
>11.0 KOj |
>12 KOj |
36-38 MGOe |
|
N40 |
12. 6-12.9 KGs |
>11.0 KOj |
>12 KOj |
38-40 MGOe |
|
N42 |
13. 0-13.2 KGs |
>11.0 KOj |
>12 KOj |
40-42 MGOe |
|
N45 |
13. 3-13.7 KGs |
>11.0 KOj |
>12 KOj |
43-45 MGOe |
|
N48 |
13. 8-14.2 KGs |
>11.0 KOj |
>12 KOj |
45-48 MGOe |
|
N50 |
14. 1-14.5 KGs |
>11.0 KOj |
>11 KOj |
48-50 MGOe |
|
N52 |
14. 5-14.8 KGs |
>11.2 TSI |
>11 KOj |
49. 5-52 MGOe |
Thermal yam ntxwv
|
Neodymium Khoom Hom |
Kev khiav hauj lwm kub siab tshaj plaws |
Curie Temp |
|
N |
176 degree F (80 degree) |
590 ° F (310 ° F) |
|
NM |
212 ° F (100 ° F) |
644 ° F (340 ° F) |
|
NH |
248 ° F (120 ° F) |
644 ° F (340 ° F) |
|
NSH |
302 ° F (150 ° F) |
644 ° F (340 ° F) |
|
NUH |
356 degree F (180 degree) |
662 degree F (350 degree) |
|
NEH |
392 ° F (200 ° F) |
662 degree F (350 degree) |
|
NAH |
428 ° F (220 ° F) |
662 degree F (350 degree) |
Cov yam ntxwv ntawm lub cev thiab txhua yam
|
Qhov ntom |
7. 4-7.5 g/cm³ |
|
Compression zog |
950 MPa (137,800 psi) |
|
Tensile zog |
80 MPa (11,600 psi) |
|
Vickers Hardness (Hv) |
560-600 |
|
Young's Modulus |
160 GPa (23,200 ksi) |
|
Recoil Permeability |
1.05mr ua |
|
Hluav taws xob tiv thaiv (ρ) |
160 μ-ohm-cm |
|
Thaum tshav kub kub muaj peev xwm |
350-500 J/(kg. degree) |
|
Thermal Expansion Coefficient (0 txog 100 degree) |
5.2 x 10-6 / degree |
|
Thermal Expansion Coefficient (0 txog 100 degree) |
-0.8 x 10-6 / degree |
Painting yam ntxwv
|
Hom xim |
Zuag qhia tag nrho Thickness |
Ntsej Tsuag Test |
Pressure Cooker Test |
|
NiCuNi (Nickel tooj liab Nickel) |
15-21 μm |
24 teev |
48 hnu |
|
NiCu + Dub Nickel |
15-21 μm |
24 teev |
48 hnu |
|
NiCuNi + Epoxy |
20-28 μm |
48 hnu |
72h ua |
|
NiCuNi + Kub |
16-23 μm |
36 hnu |
72h ua |
|
NiCuNi + Silver |
16-23 μm |
24 teev |
48 hnu |
|
Zinc |
7-15 μm |
12 teev |
24 teev |
Cim npe nrov: Tuam Tshoj ndfeb lauj kaub hlau nplaum lwm tus neeg, Hoobkas
