Qhov sib txawv ntawm NdFeB thiab SmCo hlau nplaum

Qhov sib txawv ntawm NdFeB thiab SmCo hlau nplaum

Ntau tus neeg tsis meej pem thaum xaiv cov khoom sib nqus, xws li NdFeB thiab SmCo hlau nplaum, uas ib tus muaj kev sib nqus zoo dua, qhov twg yog qhov zoo dua rau qhov kub-resistant, nqi-zoo thiab lwm yam. Hnub no, cia kuv qhia koj txog qhov sib txawv ntawm ob.

Neodymium hlau boron, remanence siab dua samarium cobalt, tuaj yeem ncav cuag li 55 tam sim no, samarium cobalt tsuas tuaj yeem ncav cuag 32. Remanence tuaj yeem nkag siab yooj yim raws li lub zog nqus raws li cov lus hais mus, NdFeB loj dua, tab sis lub zog quab yuam ntawm NdFeB qis dua SmCo. Coercivity yog lub peev xwm los tiv thaiv demagnetization.

Qhov kub tsis kam ntawm NdFeB tsis zoo heev, thiab qhov siab tshaj plaws tam sim no yog 200 degrees. Samarium cobalt, nrog rau cov khoom siv hluav taws xob sib nqus ntawm 30, tuaj yeem tiv taus 300 degrees, thiab qee cov khoom tshwj xeeb tuaj yeem ncav cuag 450 degrees tom qab txo qhov remanence. Qhov no txhais tau hais tias muaj kev sib raug zoo ntawm remanence thiab coercive force (kev txaus nyiam quab yuam thiab muaj peev xwm tiv thaiv demagnetization). Yog tias koj xav tau qhov no, tej zaum koj yuav tau txi qhov ntawd.

NdFeB muaj kev tiv thaiv corrosion tsis zoo thiab huab cua tsis kam. Yog li ntawd, feem ntau, electroplating thiab lwm yam kev tiv thaiv yuav tsum tau, thiab txawm ntim thiab anticorrosion. Feem ntau galvanized, npib tsib xee-plated, epoxy thiab lwm yam. Txawm li ntawd los, tsis zoo li samarium cobalt.

Ob leeg NdFeB, SmCo yog nkig thiab tawv, yog li lawv tsis tuaj yeem ua tiav los ntawm kev txiav zoo tib yam, thiab cov txheej txheem kev ua haujlwm dav dav yog hlau txiav.