Kev ua haujlwm siab Fe-b alloy particle FeB 95: 5wt High-Entropy Alloys (HEA) Manufacturing

Boron muaj qhov hnyav atomic ntawm 10.81. Cov qauv hluav taws xob yog 1s2s2p. Qhov ceev ntawm crystalline boron yog 2.31g / cm (20 ° C), thaum qhov ceev ntawm amorphous boron yog 2.30g / cm (20 ° C). Melting point 2079 ℃, kub taw tes 3660 ℃. Daim duab qhia txog theem sib npaug ntawm boron-hlau binary system yog qhia nyob rau hauv daim duab 1. Nyob rau hauv lub boroferric system, muaj ib tug eutectic point ntawm txog 3.8% boron ntsiab lus, thiab eutectic kub yog 1149 ℃. Hlau thiab boron tsim ob qhov sib txuas nruab nrab, Fe2B thiab FeB, uas tseem ruaj khov heev ntawm qhov kub thiab txias. FeB muaj ob hom siv lead ua: qhov kub thiab txias. Kev tsim cov hlau boride (10% ~ 20% B) melting kub ntau ntawm 1400 ~ 1550 ℃, qhov ceev ntawm 5.8 ~ 6.5g / cm

Ib txoj kab ntawm boron (0.001%) tuaj yeem ua ob npaug rau hardenability ntawm steel. Qhov sib ntxiv ntawm 0.003% B rau stainless hlau tuaj yeem txhim kho nws cov txheej txheem. Boron muaj cov khoom ntawm absorbing neutrons, uas tuaj yeem cuam tshuam lossis nres cov kab mob ntawm cov tshuaj tiv thaiv uranium-graphite nuclear. Yog li, steel nrog cov ntsiab lus boron ntau dua (> 1% B) yog siv hauv kev lag luam atomic zog. Boron hauv cam khwb cia hlau tuaj yeem cuam tshuam graphitization, yog li ua rau qhov tob ntawm lub qhov ncauj. Thaum tus nqi ntawm boron ntxiv yog ntau tshaj 0.01%, cov nyhuv ntawm stabilizing carbide yog pom tseeb, yog li qhov hnav tsis kam ntawm cam khwb cia hlau yog txhim kho. Hlau dov, boron cov ntsiab lus 0.02% ~ 0.1%, tuaj yeem txhim kho qhov tawv tawv thiab txhim kho cov khoom dawb. Ntxiv Borda 0.001% ~ 0.005% rau malleable cam khwb cia hlau yog haum rau tsim spheroidal number case. Nyob rau tib lub sijhawm, nws tseem tuaj yeem ua kom cov khoom ntawm graphite thiab txhim kho nws qhov kev faib tawm. Cov nyhuv no yog qhov zoo rau kev kho mob annealing. [2]

Lub hauv paus hlau, cobalt puag thiab npib tsib xee puag hmoov siv rau txau (vuam) muaj 0.5% ~ 4.0% boron. Amorphous fe-silicon-boron alloys uas muaj boron, xws li Feg2SisB3, tuaj yeem hloov kho cov hlau silicon steel los ua lub zog txuag hluav taws xob thiab lwm yam khoom siv uas tsis tshua muaj hlau poob thiab ntim me me. Ndfeb cov hlau nplaum ruaj khov xws li Nd2Fe14B thiab Nd15Fe77B8 muaj qhov zoo ntawm kev ua haujlwm siab, siab coercivity thiab siab sib nqus zog khoom, uas yog cov khoom zoo tagnrho rau kev tsim cov hlau nplaum ruaj khov.