Al-15Si-6Ni Abstract: Nyob rau hauv cov pa siv lead ua Al-Si alloy centrifugal casting, thawj Si hais, pores thiab slag yuav converge nyob rau hauv lub puab txheej nyob rau tib lub sij hawm, txo lub zog. ntawm Si hais nyob rau hauv kev txhim kho txheej. Txhawm rau kom tsis txhob muaj qhov tsis zoo no, siv Al-15 feem pua Si-6 feem pua Ni raws li qhov tsis muaj, thiab ua tiav cov gradient sib tov ntawm cov khoom, qhov pores thiab slag hauv txheej sab hauv. Kev tsom xam ntawm ntau cov qauv nyob rau hauv cov txheej txheem sib txawv qhia tau hais tias nyob rau hauv lub centrifugal quab yuam teb, cov hais yuav thawb lub tsawg ntom thawj crystal Si particles mus rau txheej txheej ua ke, tsim ib tug gradient composite khoom nrog siab ntim feem nyob rau hauv txheej txheej. Daim ntawv thov ntawm electromagnetic teb zoo txo cov adhesion thiab agglomeration ntawm cov thawj hais thiab refines cov nplej. Cov pores thiab slag nyob rau hauv lub casting mas yog los ntawm curgas thiab oxidation nyob rau hauv lub centrifugal txoj kev. Nrog rau kev sib koom ua ke ntawm cov casting, qhov cuam tshuam cov roj nag lossis daus, vim nws qhov ntom ntom me me, yuav ua rau cov txheej txheej sab hauv ntawm cov cam khwb cia ua ke nrog cov slag, yog li tsim cov txheej txheem tsis xws luag hauv thaj tsam innermost, raws li qhia hauv d thiab e. cov cheeb tsam qhia hauv daim duab.(2) Kev cuam tshuam ntawm cov hlau nplaum yog qhov tsim nyog los txo cov adhesion ntawm cov khoom. Raws li pom nyob rau hauv daim duab daim duab 4-1, cov hais kom meej meej qhia ib tug agglomeration zoo tsis muaj ib tug magnetic teb. Nrog rau kev cuam tshuam ntawm cov magnetic teb thiab qhov nce ntawm cov magnetic teb, qhov agglomeration ntawm cov khoom txo qis, raws li qhia hauv daim duab 4-2, 4-3, 4-4. (3) Cov khoom qhia txog kev nyiam ntawm polarization rau txheej txheej. Nyob rau hauv lub centrifugal quab yuam, cov hais qhia ib tug meej qauv ntawm polarization mus rau txheej txheej, thiab nrog lub centrifugal ceev, cheeb tsam a, b, c hauv daim duab 4-5,4-3,4-6, 4-7,4-8.(4) Kev sib cais ntawm thaj chaw txhim kho particle los ntawm qhov chaw tsis raug. Cov txheej txheej sab nrauv (a, b, c cheeb tsam) ntawm qhov casting yog hu ua particle txhim kho thaj tsam vim muaj cov khoom loj; lub puab txheej ntawm casting (d, e cheeb tsam) muaj ntau qhov pores, slag thiab me me, uas yog hu ua qhov chaw tsis xws luag.
2.3 Qhov cuam tshuam ntawm magnetic teb ntawm lub koom haum microscopic Daim duab 7-9 yog cov koom haum microscopic ntawm cov qauv txheej ntawm 1000 r/min thiab tam sim no siv ntawm 0, 1.5A thiab 2A. Ntawm lawv, muaj cov thaiv dub, Si thiab lub teeb grey tuav, thaiv thaiv, NiAl3 thiab cov ntaub so ntswg dawb -Al. Primary crystal, Si thiab NiAl3 feem ntau sib sau ua ke, ua raws thiab qhwv ua ke nrog ib leeg. Thaum tsis muaj qhov sib nqus sab nraud (piv txwv li, tam sim no 0), thawj Si ntawm cov qauv txheej sab nraud me dua, thawj Si ntawm cov txheej sab hauv yog loj dua li txheej txheej, qhov loj ntawm qhov nruab nrab hloov txheej txheej yog nruab nrab ntawm sab hauv. thiab txheej txheej, thawj Si hais feem ntau yog thaiv hauv txhua txheej, thiab thawj NiAl3 hais tsis pom tseeb hauv txhua txheej, feem ntau thaiv thiab ntev strips ntawm ntau qhov sib txawv. Tom qab ntxiv cov magnetic teb, Si thiab NiAl3 ntawm txhua txheej ntawm cov qauv tau ua kom zoo dua rau qib sib txawv. Thaum lub zog magnetic teb yog me me (tam sim no 1.5A), cov thawj siv lead ua Si particles ua me me, hloov ntawm ntse block mus rau puag ncig. Tus thawj siv lead ua NiAl3 kuj tau ua kom zoo rau qhov sib txawv, thiab cov blocks ua me me, thiab cov sawb ntev tau tawg mus rau hauv cov blocks. Thaum lub zog magnetic teb loj (tam sim no 2A), thawj Si thiab NiAl3 ntawm txhua txheej tsis tau ua kom zoo dua qub, thiab txawm tias thawj Si thiab NiAl3 hais ua loj dua, thawj Si blocks loj dua, thiab thawj NiAl3 strips ua ntau dua. loj.
