NdFeB hlau nplaum, kuj hu uaneodymium hlau nplaum, yog cov hlau nplaum uas muaj zog tshaj plaws thiab siv dav tshaj plaws hauv ntiaj teb.Lawv yog tsim los ntawm kev sib xyaw ntawm neodymium, hlau, thiab boron, uas ua rau muaj zog sib nqus.Txawm li cas los xij, zoo li lwm yam hlau nplaum, NdFeB hlau nplaum yog qhov cuam tshuam rau demagnetization.Hauv tsab xov xwm no, peb yuav tham txog cov ntsiab lus tseem ceeb uas cuam tshuam rau demagnetization ntawm NdFeB hlau nplaum.
Kub yog ib qho tseem ceeb uas yuav ua rau demagnetization hauv NdFeB hlau nplaum.Cov hlau nplaum no muaj ibsiab tshaj kev khiav hauj lwm kub, dhau qhov uas lawv pib poob lawv cov khoom sib nqus.Curie qhov kub thiab txias yog qhov taw tes uas cov khoom sib nqus tau hloov mus rau theem, uas ua rau poob qis hauv nws cov hlau nplaum.Rau NdFeB hlau nplaum, Curie kub yog nyob ib ncig ntawm 310 degrees Celsius.Yog li, kev khiav hauj lwm cov hlau nplaum ntawm qhov kub thiab txias nyob ze lossis siab dua qhov kev txwv no tuaj yeem ua rau demagnetization.
Lwm qhov tseem ceeb uas cuam tshuam rau demagnetization ntawm NdFeB hlau nplaum yog sab nraud magnetic teb.Kev nthuav tawm cov hlau nplaum mus rau qhov muaj zog tawm tsam magnetic teb tuaj yeem ua rau nws poob nws cov hlau nplaum.Qhov tshwm sim no hu ua demagnetizing.Lub zog thiab lub sijhawm ntawm qhov chaw sab nraud ua lub luag haujlwm tseem ceeb hauv cov txheej txheem demagnetization.Yog li ntawd, nws yog ib qho tseem ceeb los tswj cov hlau nplaum NdFeB nrog kev saib xyuas thiab tsis txhob nthuav tawm lawv rau cov hlau nplaum muaj zog uas tuaj yeem cuam tshuam lawv cov khoom sib nqus.
Corrosion kuj yog qhov tseem ceeb uas tuaj yeem ua rau demagnetization ntawm NdFeB hlau nplaum.Cov hlau nplaum no yog tsim los ntawm cov hlau alloys, thiab yog tias lawv raug dej los yog qee yam tshuaj, lawv tuaj yeem corrode.Corrosion ua rau lub cev tsis muaj zog ntawm cov hlau nplaum thiab tuaj yeem ua rau poob ntawm nws lub zog sib nqus.Txhawm rau tiv thaiv qhov no, cov coatings xws li npib tsib xee, zinc, lossis epoxy feem ntau siv los tiv thaiv cov hlau nplaum los ntawm cov dej noo thiab corrosive.
Mechanical stress yog lwm yam uas tuaj yeem ua rau demagnetization hauv NdFeB hlau nplaum.Kev ntxhov siab ntau dhau los yog cuam tshuam tuaj yeem cuam tshuam kev sib txuam ntawm cov khoom sib nqus hauv cov hlau nplaum, uas ua rau txo qis hauv nws lub zog sib nqus.Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tau ua tib zoo saib xyuas cov hlau nplaum NdFeB kom tsis txhob siv lub zog ntau dhau los yog ua rau muaj kev cuam tshuam sai.
Thaum kawg, lub sijhawm nws tus kheej kuj tseem tuaj yeem ua rau demagnetization hauv NdFeB hlau nplaum.Qhov no yog hu ua aging.Nyob rau lub sijhawm ntev, cov khoom sib nqus ntawm cov hlau nplaum tuaj yeem degrade vim muaj ntau yam xws li kub hloov pauv, raug rau sab nraud magnetic teb, thiab txhua yam kev ntxhov siab.Txhawm rau txo qhov cuam tshuam ntawm kev laus, kev soj ntsuam tsis tu ncua thiab saib xyuas cov hlau nplaum cov khoom sib nqus tau pom zoo.
Hauv kev xaus, ntau yam tuaj yeem cuam tshuam rau demagnetization ntawm NdFeB hlau nplaum, nrog rau qhov kub thiab txias, sab nraud magnetic teb, corrosion, mechanical stress, thiab laus.Los ntawm kev nkag siab thiab tswj cov yam ntxwv zoo no, nws muaj peev xwm khaws cov khoom sib nqus muaj zog ntawm NdFeB hlau nplaum thiab ua rau lawv lub neej ntev.Kev tuav kom zoo, tswj qhov kub thiab txias, thiab kev tiv thaiv ib puag ncig corrosive yog qhov tseem ceeb hauv kev tswj xyuas cov hlau nplaum ua haujlwm.
Post lub sij hawm: Sep-22-2023