Cov khoom lag luam
Silicon magnesium (feem ntau yog xa mus rau cov khoom siv hlau nplaum, mg ₂ SI) yog qhov tseem ceeb intermetor, aluminium alloy hloov kho, thiab lwm thaj teb. Cov hauv qab no yog cov ntsiab lus piav qhia ntxaws ntxaws ntawm nws daim ntawv thov thiab cov txheej txheem txheej txheem:
1, cov ntawv thov tseem ceeb ntawm silicon magnesium
Khoom siv ntawm semiconductor
Thermoelectric Conversion: mg ₂ yog ib puag ncig cov khoom siv thermoelectric (ua hauj lwm kub) siv rau cov hluav taws xob kub ua haujlwm, hluav taws xob fais fab mov, thiab lwm yam.
Doping tswj: Los ntawm doping antuage (sb), bismuth (bi), thiab doping nyiaj (AG) los ua kom zoo P- hom}} hom kev ua tau zoo.
Aluminium Alloy Additive
Cov kws sau qoob loo: MG ₂ ua cov theem ntxiv dag zog hauv Al Mg Siloys (xws li 6061 alloy), txhim kho lub zog, corrosion tsis kam, thiab weldability.
Kev tswj hwm piv: Yuav tsum tau tswj mg: Si≈1.73: 1 (cov piv sib piv) kom tsis txhob muaj Brittleness dawb.
Hydrogen Cia Khoom Siv
Tom qab compound nrog lih, reversible hydrogen nqus thiab destorption yuav ua tiav ntawm qhov kub, tab sis qhov teeb meem ntawm kev caij tsheb khov kho yuav tsum tau daws.
Lwm Thaj Chaw
Ua ib qho nrab nruab nrab rau kev npaj siab - purity silicon lossis rau infrared kho qhov muag khoom siv.
2, npaj cov txheej txheem txheej txheem ntawm silicon magnesium
1. Cov qauv zoo nkauj
Txoj kev ncaj qha ntse (feem ntau siv)
Cov tshuaj tiv thaiv sib npaug: 2mg + Si → mg ₂am
kev txawj:
Magnesium hmoov (99.9%) thiab silicon hmoov (high-}} }-600 raws li kev tiv thaiv argon.
Magnesium yog nquag mus rau kev loj hlob thiab yuav tsum maj mam rhuab (piv txwv li}℃/ min) thiab mob siab rau cov neeg loj.
Siv graphite crucibles kom tsis txhob muaj paug.
Neeg kho tshuab txuam txoj kev
Pob zeb Milling Magnesium hmoov silicon hmoov (pob rau cov khoom sib piv 20: 1, lub sijhawm ntev ntev, thiab nws yuav tsum tau tswj hwm rau tsawg dua lossis sib npaug rau 10 teev.
Melting txoj kev
Haum rau loj - nplai ntau lawm, tab sis saib xyuas yuav tsum tau them rau cov oxidation ntawm magnesium (npog fluxes xws li ua neej {}} mgf ₂).
2. Purification thiab tshaj tawm - ua
Nqus tawm distillation: tshem tawm tsis tau siv cov hlau nplaum (distillation kub 900-1000 degree, nqus dej tsawg dua los yog sib npaug rau 10 ⁻ ³ ncej).
Acid Ntxuav: Siv Diluting Hydrochloric acid (5%) kom tshem tawm Mgo impurities thiab zam dhau corrosion ntawm mg ₂ SI.
3, kev ua thiab kev txawj siv
Kev npaj ntawm Thermoelectric ntaub ntawv
Sintering Txheej Txheem:
Hot pressing sintering (HP): 50MPa, 800 ℃/1h, density>95%.
Spark Ntshav Ntshav Sinter (SPS): Sai thiab suppresses grain hlob.
Doping tej kev sib txuam: ntxiv dopants (xws li bi ₂ Te ₂) thaum lub pob milling sib xyaw tsawg kawg 6 teev.
Cov kev cai hauv txhuas alloy
Cov kev sib cais zuj zus: Txhawb nqa kev faib tawm ntawm MG ₂ SI SAB SAB SOBLE los ntawm Ultrasonic Stirring lossis Electromagnetic Stirring.
Kev Kho Mob Laus: T6 Kev Kho Mob Kub (Dag Ua Kua + Chiv Txawv) Ua Kom Zoo thiab Ntxiv Dag Zog.
Hydrogen cia khoom siv composite
Ntxiv cov catalysts (xws li tif3) thaum lub sij hawm pob milling nrog lih txhim kho Kinetics.
4, cov teeb meem thiab cov kev daws teeb meem
Qhov teeb meem oxidation: inert gas tiv thaiv yog qhov yuav tsum tau thoob plaws cov txheej txheem (xws li hnab looj tes G Hnab O ₂<1ppm).
Kev sib cais ua tus cais: txias nrawm (dej {{{} txias} txias} txias tooj liab pwm) yog siv thaum lub sijhawm melting.
Cov neeg raug mob theem: Tom qab synthesis, ntes los ntawm XRD kom tsis txhob muaj MgG lossis dawb SI.
FESIMG SPECIAIFICATION
|
Tshuaj Lom |
|||||
|
% Mg |
% Ca |
% TE |
% Al |
% SI |
Fe |
|
5-6 |
0.5-1 |
0.5-1 |
1.2 Max. |
43-48 |
Seem |
|
5-6 |
1-1.5 |
1-1.5 |
1.2 Max. |
43-48 |
Seem |
|
5-6 |
1.5-2 |
1.5-2 |
1.2 Max. |
43-48 |
Seem |
|
5-6 |
1-1.5 |
– |
1.2 Max. |
43-48 |
Seem |
|
6-7 |
0.5-1 |
0.5-1 |
1.2 Max. |
43-48 |
Seem |
|
6-7 |
1-1.5 |
1-1.5 |
1.2 Max. |
43-48 |
Seem |
|
6-7 |
1.5-2 |
1.5-2 |
1.2 Max. |
43-48 |
Seem |
|
7-8 |
2-2.5 |
2-2.5 |
1.2 Max. |
43-48 |
Seem |
|
8-10 |
0.5-1 |
0.5-1 |
1.2 Max. |
43-48 |
Seem |
|
8-10 |
1.5-2 |
1.5-2 |
1.2 Max. |
43-48 |
Seem |
|
8-10 |
1-1.5 |
– |
1.2 Max. |
43-48 |
Seem |
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