Physics ntawm Thermo-mechanical Deformation ntawm Ntshiab Molybdenum Qws thiab MoLa Alloy Qws
Nyob rau hauv lub ntiaj teb no txheej txheem ntawm kev tsiv mus rau ultra- siab-efficiency N- hom modules (TOPCon/HJT), kev loj hlob ntawm monocrystalline silicon nrog loj loj thiab tsawg tsawg tus neeg nqa khoom lub neej poob tau dhau los ua qhov tseem ceeb ntawm kev sib ntaus sib tua. Sab hauv Hnub Ci Loj Hlob Rauv (Solar Growth Furnaces), ntawm ntau tshaj 1500℃thiab nyob rau hauv ib qho chaw thermal heev (Hot Zone) nrog lub tshuab nqus tsev siab lossis argon ntws, cov khoom siv hlau zoo tib yam yuav ua rau cov ntaub so ntswg softening nyob rau hauv lub tshav kub dawb nyob rau ntau pua teev.
Raws li cov khoom tseem ceeb rau kev nqa, ncua, thiab kho Thermal Gradient (Thermal Gradient), Ntshiab Molybdenum Bars (Ntshiab Molybdenum Bars) thiab molybdenum-lanthanum (MoLa) tsis tshua muaj ntiaj teb alloy tuav tau dhau los ua European thiab American photovoltaic crystal furnace thermal field designers kom zoo tswj kev loj hlob ntawm cov khoom siv lead ua zoo li qub. Kev sib koom ua ke thiab kev hloov pauv ntawm ob yog tsis yog qhov yooj yim tus nqi txiav txim siab, tab sis kev ua si metallurgical txog siab -kub nqaij deformation thiab semiconductor- qib purity tswj.
I. Lub hauv paus physics: "lub luag haujlwm ua haujlwm" ntawm cov ntshiab molybdenum thiab MoLa alloy rods hauv cov khoom siv hnub ci ib leeg siv lead ua
Nyob rau hauv cov txheej txheem ntawm lub hnub ci ib leeg siv lead ua daim duab (Czochralski silicon txoj kev loj hlob), molybdenum thiab molybdenum alloy rods tsuas yog ua cov tub ntxhais kev txhawb nqa pas nrig ntawm lub tshav kub, lub hanging electrode ntawm crucible, coupling ntawm hnyav - lub luag hauj lwm lifting mechanism, thiab tswj ncej ntawm cov roj tsuag roj ntws channel.
1. Ntshiab molybdenum pas nrig(UNS R03600): cov kab hauv qab ntshiab ntawm semiconductor-qib "zero doping"
Ntshiab molybdenum (purity Ntau dua los yog sib npaug rau 99. 95%) muaj qhov tsis tshua muaj siab -kub vapor siab thiab thermal conductivity zoo heev.
Cov txiaj ntsig tseem ceeb: Nyob rau theem pib ntawm kev loj hlob ib leeg siv lead ua (crystal pib thiab lub xub pwg tso rau theem), lub volatilization ntawm ib qho kev hloov pauv hlau impurities yuav ua rau Dislocations hauv silicon ib leeg muaju. Ntshiab molybdenum rods tsis muaj ib txwm txhob txwm ntxiv cov ntsiab lus alloy. Nyob rau hauv nruab nrab thiab siab kub ntau txog 1200℃-1300 degree, nws muaj peev xwm xyuas kom meej tias thermal teb Cheebtsam yuav tsis tso volatile doped impurities rau molten silicon, thiab tiv thaiv lub silicon ib tug siv lead ua lub neej.
2. Molybdenum-lanthanum alloy rods (MoLa / tsis tshua muaj ntiaj teb oxide dispersion- zog molybdenum): ib "pawg yuam sij" tiv thaiv nkag ntawm 1400 degree
Thaum lub tshav kub ntawm lub cub hluav taws xob ib leeg hloov zuj zus mus rau qhov loj (xws li 12 ntiv tes, 16 ntiv tes), tag nrho qhov hnyav ntawm graphite thiab crucible system yog nyob rau hauv geometric series, thiab lub hauv paus tseem ceeb txhawb nqa rods thiab hangers yuav tsum raug rau dawb heev - kub tej yam kev mob ze rau 1500℃Tons ntawm tensile thiab shear stress. Ordinary ntshiab molybdenum rods yuav recrystallize nyob rau hauv ib tug luv luv lub sij hawm ntawm lub sij hawm ntawm qhov kub thiab txias.
Microscopic hloov kho mechanism (Lub ODS nyhuv):Cov molybdenum-lanthanum alloy rodstsim ib qho tshwj xeeb oxide dispersion ntxiv zog (ODS) qauv los ntawm doping ib tug me me (feem ntau 0.3 wt% -0.7 wt%) ntawm nanoscale lanthanum trioxide (La2O3) hais.
Leap nyob rau hauv recrystallization kub: Lanthanum nanoparticles zoo li suav tsis tau "micro steel rau tes" pinned rau ntawm cov ciam teb ntawm molybdenum, tsa lub recrystallization kub ntawm molybdenum los ntawm 1000℃ntawm ntshiab molybdenum mus rau 1400℃-1500℃nyob rau hauv ib tug poob swoop.
Interlocking Grain Structure: Lub recrystallized MoLa nplej tam sim no slender, interlaced fibrous duab, tsis txhob grain ciam slippage tshwm sim los ntawm loj equiaxed nplej tom qab recrystallization ntawm ntshiab molybdenum. Qhov no muab MoLa alloy rods unparalleled Anti-Sagging Performance thiab siab -kub creep lub neej, uas yog 3 mus rau 5 npaug ntev dua nyob rau hauv ib qho khoom siv lead ua dua li ntshiab molybdenum.
Kev sib piv ntawm ob yam khoom
|
Cov khoom |
Ntshiab Molybdenum Qws (Mo1) |
MoLa Alloy Qws (Mo-La) |
|
MolybdenumConnt |
Ntau dua lossis sib npaug li 99.95% |
Ntau dua lossis sib npaug li 99.90% |
|
RecrystalizationTemperature |
900 ~ 1100 degree |
1400 ~ 1600 degree |
|
SiabTemperatureSzog |
feem ntau |
zoo heev |
|
CrovRKev muaj peev xwm |
feem ntau |
zoo heev |
|
Deformation ResistMuaj peev xwm |
feem ntau |
zoo heev |
|
KubSkev ruaj ntseg |
feem ntau |
zoo heev |
|
Skev erviceLife |
luv dua |
Lnpau taws |
|
Ttshuaj ntsuabConductivity |
Me ntsis siab dua |
Sqis qis |
|
Process Akev muaj peev xwm |
pxa mus |
pxa mus |
|
Cost |
qis |
Hua igher |
II. Technical Standards thiab Chemical Microscopic Composition Control (Technical Dimensions & Chemistry)
Txhawm rau ua kom tau raws li qhov xav tau nruj ntawm European thiab Asmeskas B2B cov thawj coj kev yuav khoom rau kev ua raws li cov khoom siv saw hlau, cov khoom siv nruj me ntsis siv cov txheej txheem thoob ntiaj teb qib siab refractory hlau thiab photovoltaic semiconductor qib tswj cov qauv:
Kev ua raws li cov qauv thoob ntiaj teb: ASTM B387 (Standard Specification rau Molybdenum thiab Molybdenum Alloy Qws, Qws, thiab Hlau).
Tshuaj purity ntawm ntshiab molybdenum pas nrig: Mo Ntau dua los yog sib npaug rau 99. 95%; Cov impurities (Fe, Ni, Cr, Cu Tsawg dua los yog sib npaug rau 0.002%), tswj nruj me ntsis rau qhov sib sib zog nqus sib sib zog nqus- theem tsis zoo impurities.
MoLa alloy bar specification: La2O3 cov ntsiab lus yog raug tswj nyob rau hauv lub qhov rais nqaim ntawm 0.3% -0.6% kom sib npaug siab kub creep kuj thiab theem nrab machining ductility ntawm cov khoom. Cov txheej txheem deformation: Loj forging piv txias teb forging thiab nruab nrab kub xov dov yog saws los xyuas kom meej tias tsis muaj macro pores thiab slag inclusions nyob rau hauv lub bar, thiab 100% ntawm lub Hoobkas tau undergone ultrasonic flaw detection (UT) kuaj.
III. Yav tom ntej tiam sis ntawm cov chaw nres tsheb ywj pheej: Vim li cas European thiab Asmeskas ib leeg siv lead ua thermal hloov khoom dua tshiab nyiam MoLa?
Raws li lub ntiaj teb photovoltaics nkag mus rau qis- nqi, ntev- lub neej, thiab qhov loj- qhov kev ua si loj, Tus Nqi Them Nqi ntawm ib lub cub tawg yog qhov siab heev. Ordinary ntshiab molybdenum Cheebtsam ua nkig vim siab -kub lis coarsening. Thaum lub sij hawm thermal teb disassembly, ntxuav cov pa roj carbon - cov ntaub ntawv carbon composite thiab tu cov graphite plua plav, "Brittle Fracture" yog ib qho yooj yim heev los tshwm sim vim muaj kev sib tsoo me ntsis.
Vim nws qhov zoo tshaj plaws thermal Fatigue Toughness (Thermal Fatigue Toughness), MoLa alloy rods tseem tuaj yeem muaj cov khoom seem zoo nyob rau hauv chav tsev kub txawm tias tom qab ntau pua lub voj voog thermal (Thermal Cycling) ntawm lub cub tawg pib- nce thiab kaw, uas zoo heev txhim kho cov photovoltaics txawv teb chaws. Qhov kev pheej hmoo ntawm kev sib tsoo ntawm cov siv lead ua "condensation lauj kaub" tshwm sim los ntawm kev tawg tam sim ntawd ntawm cov khoom tseem ceeb hauv thermal teb hauv lub Hoobkas.
Monica
Txoj hauj lwm:Tus Thawj Tswj Muag
WhatsApp:+86 182 9270 2722
E-mail:Cr-Re@titanmsgp.com
