Tshiab Magnet Alloys Pab kom cov ntawv thov kub siab heev

Cov kws tshawb fawb los ntawm National Institute of Materials tsis ntev los no tau tshaj tawm txog kev tsim cov hlau tsis tshua muaj hauv ntiaj teb hloov pauv uas tuaj yeem ua haujlwm ruaj khov ntawm qhov kub siab tshaj 500 degree thaum tuav cov khoom sib nqus muaj zog. Cov alloys tshiab no daws qhov kev sib tw ntev ntev rau cov ntawv thov xws li cov tub yees sib nqus, cov tshuab cua txias sib nqus, thiab cov khoom siv hluav taws xob hluav taws xob hluav taws xob sib nqus ntawm qhov kub thiab txias.

Cov pa hlau nplaum raws li NdFeB thiab SmCo alloys nthuav tawm txo cov khoom sib nqus saum toj 300 degree vim qhov txo qis anisotropy thiab nrawm diffusion ntawm cov ntsiab lus tsis tshua muaj hauv ntiaj teb. Txhawm rau daws qhov teeb meem no, cov kws tshawb fawb tau sib xyaw cov ntsiab lus tsis tshua muaj hauv ntiaj teb nrog ntau cov hlau hloov pauv xws li hlau thiab cobalt, thiab ua kom zoo dua qhov muaj pes tsawg leeg thiab microstructure tswj ntawm alloys. Lawv pom tias ua kom muaj pes tsawg tus metalloids xws li Si thiab Al thiab txo cov nplej loj tuaj yeem txhim kho qhov kub thiab txias.

Cov alloys tsim tshiab tau pom muaj zog hlau nplaum txawm tias tom qab lub sij hawm ntev thermal aging ntawm 600 degree. Lawv cov khoom siv hluav taws xob siab tshaj plaws ntawm 500 degree tseem siab dua 10MGOe, piv rau cov khoom lag luam NdFeB hlau nplaum ntawm chav tsev kub. Tus nqi ntawm cov alloys no kuj qis dua vim txo kev siv cov ntsiab lus tsawg hauv ntiaj teb. Lawv qhia tau tias muaj kev cia siab rau kev lag luam hauv cov khoom siv hlau nplaum siab kawg thiab cov khoom siv ua haujlwm hauv qhov chaw huab cua.

Txawm li cas los xij, kev tsim khoom loj ntawm cov alloys tshiab no nyob rau hauv ib qho scalable thiab raug nqi zoo tseem nyuaj. Cov kws tshawb fawb tau qhia tias kev ua kom muaj zog sai thiab cov txheej txheem kev sib xyaw ua ke tuaj yeem txuas qhov sib txawv ntawm kev ua haujlwm hauv kev ua tiav thiab kev siv hauv kev lag luam. Kev sib koom tes thoob plaws lub teb chaws thiab kev qhuab qhia kom nrawm hloov tshuab yog xav tau.

Qhov kev tawg no ua rau txoj hauv kev rau tiam tom ntej ntawm cov hlau nplaum kub uas tsis tas yuav kim dysprosium thiab terbium ntxiv. Kev siv dav dav ntawm cov hlau nplaum tshiab no tuaj yeem txo qhov kev cia siab ntawm cov ntaub ntawv tseem ceeb thiab txhim kho cov saw hlau ruaj khov ntawm cov khoom siv hlau nplaum. Zuag qhia tag nrho, qhov kev tshawb pom no muaj qhov cuam tshuam tseem ceeb rau kev ua kom muaj zog ruaj khov thiab txhawb nqa thev naus laus zis.