Nawa kuka sani game da maganadisu NdFeB?

Dindindin maganadisu kayan yafi hada da AlNiCo (AlNiCo) tsarin karfe m maganadisu, na farko ƙarni SmCo5 m maganadisu (wanda ake kira 1: 5 samarium cobalt gami), ƙarni na biyu Sm2Co17 (wanda ake kira 2:17 samarium cobalt gami) m maganadisu, na uku tsara rare rare. Duniya dindindin magnet alloy NdFeB (wanda ake kira NdFeB gami). Tare da haɓaka kimiyya da fasaha, an inganta aikin NdFeB na dindindin abu na maganadisu kuma an fadada filin aikace-aikacen. The sintered NdFeB tare da babban Magnetic makamashi samfurin (50 MGA ≈ 400kJ/m3), high coercivity (28EH, 32EH) da high aiki zafin jiki (240C) da aka samar da masana'antu. Babban albarkatun kasa na NdFeB m maganadiso ne rare earth karfe Nd (Nd) 32%, karfe kashi Fe (Fe) 64% da wadanda ba karfe kashi B (B) 1% (karamin adadin dysprosium (Dy), terbium ( Tb), cobalt (Co), niobium (Nb), gallium (Ga), aluminum (Al), jan karfe (Cu) da sauran abubuwa). NdFeB ternary tsarin maganadisu na dindindin ya dogara ne akan fili Nd2Fe14B, kuma abun da ke ciki yakamata yayi kama da tsarin kwayoyin Nd2Fe14B. Koyaya, kaddarorin maganadisu na maganadisu sun yi ƙasa sosai ko ma maras maganadisu lokacin da aka rarraba rabon Nd2Fe14B gaba ɗaya. Sai kawai lokacin da abun ciki na neodymium da boron a cikin ainihin maganadisu ya fi abun ciki na neodymium da boron a cikin Nd2Fe14B fili, zai iya samun mafi kyawun kayan maganadisu na dindindin.

Sintering: Sinadaran (formula) → smelting → foda yin → danna (forming fuskantarwa) → sintering da tsufa → Magnetic dukiya dubawa → inji aiki → surface shafi jiyya (electroplating) → gama samfurin dubawa
Bonding: albarkatun kasa → daidaita girman barbashi → hadawa tare da ɗaure → gyare-gyare (matsi, extrusion, allura)

Akwai manyan sigogi guda uku: remanence Br (Sauran Induction), naúrar Gauss, bayan an cire filin maganadisu daga yanayin jikewa, ragowar ƙarfin maganadisu, wakiltar ƙarfin filin maganadisu na waje; Ƙarfin tilastawa Hc (Coercive Force), naúrar Oersteds, shine sanya maganadisu a cikin juzu'i mai amfani da maganadisu, lokacin da filin maganadisu da ake amfani da shi ya ƙaru zuwa wani ƙarfi, ƙarfin maganadisu na maganadisu zai kasance mafi girma. Lokacin da filin maganadisu da aka yi amfani da shi ya karu zuwa wani ƙarfi, maganadisu na maganadisu zai ɓace, ikon yin tsayayya da filin maganadisu ana kiransa Ƙarfin Ƙarfi, wanda ke wakiltar ma'aunin juriya na demagnetization; Samfurin makamashi na Magnetic BHmax, naúrar Gauss-Oersteds, shine makamashin filin maganadisu da aka samar a kowace juzu'in abu, wanda shine adadin kuzari na nawa magnet zai iya adanawa.

A halin yanzu, manyan wuraren aikace-aikacen sune: injin maganadisu na dindindin, janareta, MRI, mai raba maganadisu, mai magana da sauti, tsarin magnetic levitation, watsa maganadisu, ɗaukar maganadisu, kayan aiki, magnetization na ruwa, kayan aikin maganadisu, da dai sauransu Ya zama abu mai mahimmanci. don kera motoci, injina na gabaɗaya, masana'antar petrochemical, masana'antar bayanai ta lantarki da fasaha mai ƙima.

NdFeB shine kayan maganadisu mafi ƙarfi na dindindin a duniya, samfuran ƙarfin maganadisu ya ninka sau goma sama da ferrite ɗin da ake amfani da su sosai, kuma kusan sau biyu sama da ƙarni na farko da na biyu na magnetan ƙasa marasa ƙarfi (SmCo dindindin magnet), wanda aka sani da suna. "Sarkin Magnet na dindindin". Ta maye gurbin sauran kayan maganadisu na dindindin, ana iya rage ƙarar da nauyin na'urar sosai. Saboda yawan albarkatun neodymium, idan aka kwatanta da samarium-cobalt magnets na dindindin, ana maye gurbin cobalt mai tsada da ƙarfe, wanda ke sa samfurin ya fi tasiri.