Natural magnets muaj nyob rau hauv lub ntiaj teb thiab yog nplua nuj nyob rau hauv ib tug hlau ntxhia hu ua magnetite. Cov hlau nplaum uas tsim los ntawm tib neeg tau tsim nyob rau hauv ib lub chaw sim los ntawm kev noj cov hlau alloys thiab ua lawv kom haum rau tus nqi.
magnet yog dab tsi?
Cov hlau nplaum tas mus li yog tsim los ntawm cov hlau tshwj xeeb (cov ntaub ntawv ferromagnetic) xws li hlau, npib tsib xee thiab cob alt, ntau cov hlau tsis tshua muaj hauv ntiaj teb thiab cov zaub mov xws li lodestone.
Puas yog magnetite siv los ua hlau nplaum?
Cov hlau nplaum tas mus li lodestones muaj cov hlau nplaum, ib qho nyuaj, crystalline hlau ferrite ntxhia uas muab nws cov hlau nplaum los ntawm cov nyhuv ntawm lub ntiaj teb magnetic teb rau nws. Ntau yam hlau alloys kuj tuaj yeem ua tau magnetized.… Nyob rau xyoo 1970, cov kws tshawb fawb tau tsim cov hlau nplaum ruaj khov ua los ntawm cov hmoov samarium cob alt fused hauv qab cua sov.
4 hom hlau nplaum yog dab tsi?
Feem ntau muaj plaub pawg ntawm cov hlau nplaum ruaj khov: neodymium hlau boron (NdFeB), samarium cob alt (SmCo), alnico, thiab ceramic lossis ferrite hlau nplaum.
Yuav ua li cas cov hlau nplaum muaj zog tshaj?
Qhov muaj zog tshaj plaws ntawm cov hlau nplaum yog concentrated ntawm tus ncej. Tias yog vim li cas tus nees nees yog suav tias yog qhov muaj zog tshaj plaws thiab tuaj yeem tsim muaj txiaj ntsig zoo yog tias koj xav nqa cov khoom hnyav lossis xav ua kom cov hlau nplaum muaj zog.
