Cov Khoom Siv Alumina Ceramic Uas Muaj Kev Ntshiab Siab Rau Semiconductor & Kev Siv Hauv Kev Lag Luam
St.Cera tsim cov khoom siv alumina (Al₂O₃) ceramic uas raug tshuab ua kom raug raws li cov neeg siv khoom xav tau. Siv 99.8% alumina uas muaj purity siab, cov khoom no muaj zog flexural zoo heev (361 MPa), hardness siab (16 GPa), thiab dielectric zog zoo heev (15 × 10⁶ V/m). Tsim los rau cov khoom siv semiconductor, cov khoom sib dhos uas tiv taus kev hnav, cov insulators hluav taws xob, thiab cov khoom siv kub siab, cov khoom no muaj kev nqus dej ze li xoom (0%) thiab cov coefficient thermal expansion ntawm 7.2 × 10⁻⁶/℃, ua kom muaj kev ruaj khov ntawm qhov ntev hauv qab qhov xwm txheej hnyav.
Cov Lus Qhia Tshwj Xeeb(raws li 99.8% Al₂O₃):
Vaj tse | Tus nqi |
| Khoom siv | 99.8% Alumina (Ivory) |
| Qhov Ceev | 3.93 g/cm³ |
| Lub zog flexural | 361 MPa |
| Kev tawg tawv | 3–4 MPa·m¹/² |
| Vickers Hardness | 16 GPa |
| Young's Modulus | 380 GPa |
| Kev Ua Kub | 32 W/m·k |
| Kev Nthuav Dav Kub (25–1000 ° C) | 7.2 × 10⁻⁶/℃ |
| Dielectric tas mus li | 9.6 |
| Lub kaum sab xis poob dielectric | 0.0001 |
| Lub zog dielectric | 15 × 10⁶ V/m |
| Kev Tiv Thaiv Tshwj Xeeb | >10¹⁴ Ω·cm |
| Kub Tshaj Plaws Ua Haujlwm | 1600°C |
Cov ntawv thov:
- · Cov ntaub thaiv chav ua haujlwm semiconductor, cov qhov pom kev, thiab cov phaj faib roj
- · Cov bushings, cov nplhaib foob, thiab cov pob bearing uas tiv taus kev hnav
- · Cov insulators hluav taws xob siab thiab cov hluav taws xob ntsaws hluav taws xob
- · Cov khoom siv rau lub cub tawg, cov khoom txhawb nqa cua sov, thiab cov raj tiv thaiv thermocouple
Txheej Txheem Tsim Khoom:
Isostatic nias → ntsuab machining → sintering ntawm 1600 ° C → CNC precision sib tsoo / lapping → ultrasonic ntxuav → 100% CMM qhov ntev tshuaj xyuas. Cov geometries nyuaj, phab ntsa nyias (≥0.5 hli), thiab nruj tolerances (mus txog ±0.01 hli) tau ua tiav tas li.
Kev Tswj Xyuas Zoo:
Tau ntawv pov thawj ISO 9001: 2015. Txhua pawg khoom raug kuaj xyuas lub zog flexural (3 point bend), hardness (Vickers), dielectric strength (ASTM D149), thiab thermal shock resistance (10 cycles, 25°C ↔ 1000°C). Tsis muaj kab nrib pleb lossis chips pom tau hauv qab 20 × microscopy.
Cov txiaj ntsig zoo dua li Cov Khoom Siv Hlau lossis Polymer:
- · 3–5 × nyuaj dua li cov hlau tsis xeb (16 GPa vs. ~2 GPa)
- · Chemically inert — resistant rau acids, alkalis, thiab halogens (tshwj tsis yog HF)
- · Cov khoom rwb thaiv hluav taws xob >10¹⁴ Ω·cm, ua rau siv tau rau hauv cov chaw muaj hluav taws xob siab
- · Kev pabcuam txuas ntxiv mus txog 1600 ° C, tshaj qhov txwv ntawm cov hlau lossis yas
Kev Kho Kom Haum:
Peb txais cov duab kos los ntawm cov neeg siv khoom (hom STEP/IGS) thiab muab kev tsim qauv sai (2-3 lub lis piam). Cov khoom tuaj yeem muab tau raws li sintered, grounded, lapped, lossis polished (Ra ≤0.05 μm). Cov ntug puag ncig, counterbores, threaded qhov, thiab vacuum grooves muaj.
Lus Cim: Rau cov ntawv thov uas xav tau kev tawg siab dua, xav txog zirconia (ZrO₂) qhov chaw. Rau qhov siab tshaj plaws thermal conductivity, saib peb cov khoom BeO lossis Si₃N₄. Tag nrho cov ntaub ntawv saum toj no ua raws li cov lus qhia Al₂O₃ uas tau muab (qib 99.8%).
