Neodymium hlau nplaum ruaj khov khoom
NdFeB cov khoom siv hlau nplaum ruaj khov hu ua "Magnetic King". Nws tau pom nyob rau hauv 1983 thiab industrialized nyob rau hauv Nyiv, Tuam Tshoj, Teb chaws Europe thiab lub tebchaws United States nyob rau tib lub sij hawm nyob rau hauv 1985. Nws tau 35 xyoo txij thaum ntawd los. Nyob rau hauv 35 xyoo dhau los, lub ntiaj teb no NdFeB mus tas li hlau nplaum khoom kev lag luam tau vam meej. Nws cov khoom sib nqus txuas ntxiv teeb tsa cov ntaub ntawv tshiab, ntau yam thiab qib ntawm cov ntaub ntawv txuas ntxiv nce, kev lag luam thev naus laus zis hloov pauv nrog txhua hnub dhau mus, thiab cov khoom tsim tawm tau loj hlob sai.
NdFeB cov hlau nplaum ruaj khov yog tetragonal crystals uas muaj neodymium, hlau thiab boron. Raws li cov txheej txheem ntau lawm, nws tuaj yeem muab faib ua peb hom: sintered NdFeB, bonded NdFeB thiab kub nias NdFeB. Vim muaj cov txheej txheem ntau lawm, lawv muaj qhov sib txawv ntawm cov khoom sib nqus, tom qab ua tiav thiab kev siv.
Sintered Neodymium Magnets
Sintered NdFeB yog cov khoom loj tshaj plaws thiab siv dav hauv tsev neeg NdFeB. Nws yog tsim los ntawm hmoov metallurgy, thiab muab faib ua N, M, H, SH, UH, EH, TH, thiab lwm yam raws li qhov sib txawv coercive quab yuam ntawm cov khoom. series. Kev lag luam tsim tawm sintered NdFeB muaj qhov ua tau zoo txog li 1.45T thiab qhov sib xyaw ua ke ntawm 2786kA / m. Kev khiav hauj lwm kub yog nyob nruab nrab ntawm 80 degree thiab 200 degree, nyob ntawm tus coercivity. Sintered NdFeB yooj yim rau oxidized thiab corroded thiab xav tau kev kho deg. Raws li qhov sib txawv ntawm kev siv ib puag ncig, kev kho deg xws li phosphating, electroplating, tshuaj plating, electrophoresis, thiab vapor deposition tuaj yeem siv. Cov txheej txheem feem ntau yog zinc, npib tsib xee, npib tsib xee tooj liab npib tsib xee, epoxy resin, thiab lwm yam.
