Samarium cobalt magnets ma la isticmaali karaa in ka badan toban sano -- xasiloonida mudada dheer ee samarium cobalt ee heerkulka sare

Xasiloonida muddada dheer ee birlabku waa walaac isticmaale kasta. Xasiloonida samarium cobalt (SmCo) magnets ayaa aad muhiim ugu ah deegaankooda codsiga adag. Sannadkii 2000, Chen^[1]iyo Liu^[2]et al., waxay baaraan qaabka iyo qaab dhismeedka heerkulka sare ee SmCo, waxaana la sameeyay magnets samarium-cobalt heerkulkiisu sarreeyo. Heerkulka shaqada ugu badan (T_max) ee magnets-ka SmCo waxa laga kordhiyey 350°C ilaa 550°C. Taas ka dib, Chen et al. waxay wanaajisay iska caabinta oksaydhka ee SmCo iyadoo ku shubaysa nikkel, aluminium iyo dahaarka kale ee magnets-ka SmCo.

2014, Dr. Mao Shoudong, aasaasaha "MagnetPower", ayaa si nidaamsan u bartay xasilloonida SmCo heerkul sare, natiijadiina waxaa lagu daabacay JAP^[3]. Natiijooyinka guud waa sida soo socota:

1. GoormaSmCowaxay ku jirtaa heerkul sare (500 ° C, hawo), way fududahay in la sameeyo lakab nabaad-guur ah oo dusha sare ah. Lakabka nabaad-guurintu waxa uu inta badan ka kooban yahay miisaan dibadda ah (Samarium way dhammaatay) iyo lakab gudaha ah (ogsaydhyo badan). Qaab dhismeedka aasaasiga ah ee magnets-ka SmCo ayaa si buuxda u burburay lakabka hoos u dhaca. Sida ku cad sawirka 1 iyo sawirka 2.

Jaantuska.1. Micrograph-yada indhaha ee Sm₂Co₁₇magnets isothermal lagu daaweeyay hawada 500 °C waqtiyo kala duwan. Lakabyada xaalufka ah ee dusha sare ka hooseeya kuwaas oo (a) barbar socda iyo (b) siman xagga dhidibka c.

Jaantuska.2. BSE micrograph iyo EDS canaasiirta xariiqda-baarka ee guud ahaan Sm₂Co₁₇magnets isothermal lagu daaweeyay hawada 500 °C 192 saac.

2. Samaynta ugu weyn ee lakabka hoos u dhaca ayaa si weyn u saameeya sifooyinka magnetic SmCo, sida ku cad Jaantuska 3. Lakabyada hoos u dhaca ayaa inta badan ka kooban Co (Fe) xal adag, CoFe2O4, Sm2O3, iyo ZrOx ee lakabyada gudaha iyo Fe3O4, CoFe2O4, iyo CuO ee miisaanka dibadda. Co(Fe), CoFe2O4, iyo Fe3O4 waxay u dhaqmeen sidii wejiyada magnetka jilicsan marka la barbar dhigo wejiga magnetic adag ee magnets Sm2Co17 ee dhexe ee aan la taaban. Dhaqanka hoos u dhaca waa in la xakameeyaa.

Jaantuska 3. Qalloocyada magnetization ee Sm₂Co₁₇magnets isothermal lagu daaweeyay hawada 500 °C waqtiyo kala duwan. Heerkulka tijaabada ee qalooca magnetization-ka waa 298 K. Goobta dibedda H waxay la mid tahay isku-dheellitirka c-axis ee Sm₂Co₁₇magnets.

3. Haddii dahaarka leh iska caabin oksaydhism sare lagu shubo on SmCo si ay u beddelaan daahan electroplating asalka ah, habka xaalufka ee SmCo si weyn loo joojin karaa iyo xasiloonida SmCo waa la wanaajin karaa, sida ku cad sawirka 4. CodsigaAMA daahansi weyn u joojiso korodhka miisaanka SmCo iyo luminta guryaha magnetic.

Jaantus.4 qaab-dhismeedka iska caabin oksaydhka OR daahan on Sm ah₂Co₁₇magnet.

"MagnetPower" ayaa tan iyo markii ay samaysay tijaabooyin xasilloonida muddada-dheer (~ 4000saacadood) heerkulka-sare, kaas oo bixin kara tixraaca xasilloonida magnets SmCo mustaqbalka isticmaalka heerkulka sare.

Sannadka 2021, iyadoo lagu saleynayo shuruudaha heerkulka hawlgalka ee ugu sarreeya, "MagnetPower" waxay soo saartay darajooyin taxane ah min 350 ° C ilaa 550 ° CTaxanaha T). Darajooyinkani waxay ku siin karaan doorashooyin ku filan codsiga heerkulka sare ee SmCo, iyo sifooyinka birlabeedka ayaa faa'iido badan leh. Sida ka muuqata sawirka 5. Fadlan eeg bogga shabakadda wixii faahfaahin ah:https://www.magnetpower-tech.com/t-series-sm2co17-smco-magnet-supplier-product/

Jaantuska.5 Heerkulka sare ee SmCo magnets (T series) ee "MagnetPower"

GUNAANAD

1. Sida magnets dhulka naadirka ah oo aad u xasilloon, SmCo waxaa loo isticmaali karaa heerkul sare (≥350°C) muddo gaaban. Heerkulka sare ee SmCo (T series) waxa lagu dabaqi karaa 550°C iyada oo aan la soo celin karin demagnetization.

2. Si kastaba ha noqotee, haddii magnets-ka SmCo lagu isticmaalay heerkul sare (≥350 ° C) muddo dheer, dusha sare ayaa u nugul inuu soo saaro lakabka hoos u dhaca. Isticmaalka daahan ka-hortagga oksaydhisku waxay xaqiijin kartaa xasilloonida SmCo heerkulka sare.

Tixraac

[1] CHCHEn, IEEE Ganacsiga Magnetics, 36, 3291-3293, (2000);

[2] JF Liu, Journal of Applied Physics, 85, 2800-2804, (1999);

[3] Shoudong Mao, Journal of Applied Physics, 115, 043912,1-6 (2014)