Lub siab phem kev muaj tiag ntawm wafer theem cua sov buildup
Thaum lub sij hawm siab -ceev raug, lasers ua kom kub siab nyob rau hauv lub wafer chuck. Yog tias koj siv cov hlau tsis muaj hlau lossis txhuas, qhov cua sov no ua rau microscopic thermal expansion. Ntawm 2nm node, txawm tias qhov kev hloov pauv 1nm ua rau muaj kev cuam tshuam tam sim ntawd thiab ua kom puas silicon wafers.
Unpacking lub physics ntawm silicon carbide txhav
Silicon Carbide boasts ib qho txawv txawv elastic modulus ntawm 330 GPa, ua rau nws peb zaug stiffer tshaj cam khwb cia hlau. Qhov kev nruj nruj no tso cai rau peb los ua lub teeb yuag, hollowed - tawm cov lus qhia huab cua. Cov kev taw qhia no tuaj yeem txav ntawm qhov nrawm yam tsis muaj dabtsi yog khoov lossis flexing hauv qab acceleration.
Qhov tsis yog -magnetic vacuum xav tau hauv cov cuab yeej semiconductor
Cov khoom siv hlaumagnetize lub sij hawm, attracting microscopic airborne hais tias puas wafer yields. Peb cov qib siab SiC ceramics yog 100% tsis yog- sib nqus thiab chemically inert. Lawv yuav tsis outgas nyob rau hauv ultra- ib puag ncig lub tshuab nqus tsev siab, tuav lub pristine, particle- dawb ua chamber rau koj lithography cov cuab yeej.
Kev sib piv ntawm cov khoom siv semiconductor
| Khoom Khoom | Silicon Carbide (SiC) | Alumina (Al₂O₃ 99.5%) | Stainless hlau (316L) |
| Elastic Modulus (E) | 330 gpa ua | 370 gpa ua | 193 gp ua |
| Thermal Expansion (CTE) | 3.5 × 10⁻⁶/K | 8.0 × 10⁻⁶/K | 16.0 × 10⁻⁶/K |
| Thermal conductivity | 150 W/(m·K) | 30 W/(m·K) | 16 W/(m·K) |
| Hardness (Mohs) | 9.5 | 9.0 | 6.0 |
| Sib nqus Permeability | 1.000 (Tsis yog-magnetic) | 1.000 (Tsis yog-magnetic) | 1.002 (me ntsis sib nqus) |
Technical FAQ rau Semiconductor Equipment Engineers
Q1: Dab tsi raw khoom purity koj siv rau koj SiC ceramics?
A1: We use high-purity reaction-bonded or sintered Silicon Carbide (>99%). Qhov no ua kom cov khoom tuav nws lub cev tsis sib xws thiab yuav tsis qhia cov kab mob hlau ua paug rau hauv koj chav huv.
Q2: Yuav ua li cas koj tshuab precision qhov hauv 9.5 Mohs hardness SiC?
A2: Peb siv ntau-axis CNC sib tsoo tshuab khiav pob zeb diamond-tipped tooling. Vim tias SiC nyuaj heev, peb khiav cov txheej txheem machining nyob rau hauv cov kua ua kom txias tas li los tiv thaiv thermal tawg thiab khaws cia micro- kam rau ua.
Q3: Vim li cas kuv thiaj yuav tsum xaiv SiC tshaj Alumina (Al2O3)?
A3: Thaum Alumina tawv, SiC muaj tsib npaug ntawm thermal conductivity (150 W / m•K). Qhov no tso cai rau SiC kom dissipate cua sov sai dua, tiv thaiv cov chaw kub hauv zos uas ua rau tsis sib xws thermal expansion.
Q4: Dab tsi nto roughness (Ra) tuaj yeem koj cov chucks ceramic ua tiav?
A4: Los ntawm kev siv tshwj xeeb pob zeb diamond lapping tebchaw, peb tuaj yeem txhuam qhov chaw nquag mus rau qhov chaw roughness (Ra) ntawm qis dua 0.02μm, muab qhov ultra- tiaj tus interface rau wafer clamping.
Q5: Koj puas tuaj yeem tsim kev cai sib sib zog nqus sab hauv tav?
A5: Yog. Peb tshwj xeeb hauv machining complex, hollowed - tawm hauv cov qauv. Qhov no txo qhov kev tivthaiv qhov hnyav txog li 60% thaum ua kom nws cov txheej txheem siab nruj, tso cai rau kev nrawm nrawm dua.
Q6: Cov ceramics ua li cas rau cov thermal shocks ceev?
A6: Ua tsaug rau nws cov thermal conductivity thiab tsis tshua muaj thermal expansion, SiC sawv rau thermal shock zoo kawg nkaus. Nws yuav tsis micro- tawg los yog warp thaum lub sij hawm ceev, siab -kub ua cycles.