Kev Taw Qhia Ntawm Samarium Cobalt Magnets

Samarium cobalt hlau nplaum (SmCo), tseem hu ua samarium cobalt ruaj khov hlau nplaum, yog lub zog ruaj khov hlau nplaum ua los ntawm ob lub ntsiab lus, samarium thiab cobalt. Zoo li NdFeB, nws kuj yog rau qeb ntawm cov hlau nplaum tsawg hauv ntiaj teb. Tam sim no, muaj ob feem ntau ntawm SmCo₅thiab Sm₂Co₁₇.

 

Lub zog sib nqus sib nqus ntawm SmCo thiab NdFeB, txawm hais tias lub zog sib nqus tsis muaj zog, tab sis SmCo muaj ob qhov zoo, uas yog qhov kub thiab txias ntau dua thiab zoo dua corrosion kuj. Yog li ntawd, lawv muab cov txiaj ntsig zoo tshaj plaws thaum sib piv kev ua haujlwm thiab qhov loj me hauv qhov kub thiab txias ib puag ncig lossis kev siv.

 

Keeb kwm

Samarium cobalt hlau nplaum, qhia hauv xyoo 1970, yog thawj cov khoom lag luam uas muaj tsawg hauv ntiaj teb hlau nplaum. Lawv qhov kev taw qhia yog kev hloov pauv, tripling lub zog siab tshaj plaws ntawm lwm cov hlau nplaum thaum lub sijhawm. Ua ntej kev taw qhia ntawm SmCo hlau nplaum, tus qauv hauv cov hlau nplaum yog Alnico alloy hlau nplaum. Nws tsis yog txog thaum nce nqi ntau lawm coj cov engineers mus nrhiav cov khoom pheej yig dua uas cov hlau nplaum neodymium tau tsim thiab tam sim no yog cov hlau nplaum muaj zog tshaj plaws hauv ntiaj teb.

 

Qhov zoo

SmCo Magnets tsis muaj zog npaum li super muaj zog neodymium hlau nplaum, tab sis lawv muaj qee qhov zoo, cov hlau nplaum no muaj qhov dav dua qhov kub thiab txias, coefficient kub dua thiab ntau dua corrosion kuj. Thiab pib ua kom zoo tshaj qhov kub tshwj xeeb neodymium hlau nplaum ntawm 150 degree .

SmCo hlau nplaum tsis tsuas yog ua tau zoo ntawm qhov kub thiab txias, tab sis kuj khaws lawv cov hlau nplaum ntawm qhov kub thiab txias qis dua xoom ({0}} degree), ua rau lawv nrov rau cov ntawv thov cryogenic.

Txij li feem ntau qib ntawm samarium cobalt muaj me me rau tsis muaj hlau, lawv muaj kev tiv thaiv corrosion zoo heev.

 

Qhov tsis zoo

Ntawm qhov downside, vim tus nqi ntawm kev tsim cobalt, SmCo hlau nplaum yuav kim dua piv rau neodymium hlau nplaum (lub khw cobalt yog tus nqi rhiab). Zoo li lwm cov hlau nplaum hauv ntiaj teb tsis tshua muaj, lawv kuj yog cov nkig heev, yog li lawv tau siv zoo tshaj plaws hauv cov ntawv thov uas tsis tas yuav muaj kev cuam tshuam ncaj qha.

 

Daim ntawv thov

Vim lawv cov khoom, Samarium Cobalt hlau nplaum feem ntau yog siv rau hauv cov ntawv thov uas xav tau kev ua haujlwm siab xws li cov tshuab hluav taws xob, twj tso kua mis txuas, sensors, hluav taws xob motors, marine daim ntawv thov nrog rau tsheb, kev sib tw, aerospace, tub rog thiab khoom noj khoom haus thiab kev lag luam.