Zvikamu zveAlumina Ceramic Zvakachena Zvakanyanya zveSemiconductor & Industrial Applications
St.Cera inogadzira zvikamu zveceramic zvakagadzirwa nemazvo (Al₂O₃) zvichienderana nezvinodiwa nevatengi. Ichishandisa 99.8% high-purity alumina, zvikamu izvi zvinopa simba rakanaka rekuchinjika (361 MPa), kuomarara kwakanyanya (16 GPa), uye simba guru re dielectric (15×10⁶ V/m). Yakagadzirirwa michina ye semiconductor, ma assemblies asingaparare, ma insulators emagetsi, uye ma fixtures ekupisa kwakanyanya, chinhu ichi chinopa kunyudzwa kwemvura kunenge kusingasvike zero (0%) uye thermal expansion coefficient ye7.2×10⁻⁶/℃, zvichiita kuti pave nekugadzikana mumamiriro ezvinhu akaoma.
Magadzirirwo(zvakavakirwa pa99.8% Al₂O₃):
Pfuma | Kukosha |
| Zvinhu | 99.8% Alumina (Nyanga dzenzou) |
| Kuwanda kwevanhu | 3.93 g/cm³ |
| Simba reKuchinjika | 361 MPa |
| Kusimba Kwekutyoka | 3–4 MPa·m¹/² |
| Kuomarara kwaVickers | 16 GPa |
| Modulus yeYoung | 380 GPa |
| Kufambisa kwekupisa | 32 W/m·k |
| Kuwedzera kwekupisa (25–1000°C) | 7.2×10⁻⁶/℃ |
| Dielectric Constant | 9.6 |
| Angle yekurasikirwa kweDielectric | 0.0001 |
| Simba reDielectric | 15×10⁶ V/m |
| Kuramba Kwakananga | >10¹⁴ Ω·cm |
| Kupisa Kunoshanda Kwakanyanya | 1600°C |
Mashandisirwo:
- · Midziyo yemakamuri ekugadzirisa zvinhu zve semiconductor, nzvimbo dzekuona, uye mapurati ekugovera gasi
- · Zvigadziko zvisingapfeki, mhete dzechisimbiso, uye mabhora ebheyaringi
- · Zvidziviriri zvemagetsi zvine simba guru uye zvinodziviriri zvespark plug
- · Zvishandiso zvefurnace, zvinotsigira hita, uye machubhu ekudzivirira thermocouple
Maitiro Ekugadzira:
Kudzvanya kweIsostatic → green machining → sintering pa1600°C → CNC grinding / lapping chaiyo → ultrasonic cleaning → 100% CMM dimensional inspection. Ma geometries akaomarara, madziro matete (≥0.5 mm), uye tight tolerances (kusvika ±0.01 mm) zvinoitwa nguva dzose.
Kudzora Hunhu:
Yakatenderwa neISO 9001:2015. Batch yega yega inoedzwa simba rekutenderera (3 point bend), kuomarara (Vickers), simba re dielectric (ASTM D149), uye resistance yekupisa (10 cycles, 25°C ↔ 1000°C). Hapana matombo kana machipisi anoonekwa pasi pe20× microscopy.
Zvakanakira Zvikamu zveSimbi kana zvePolymer:
- · 3–5× yakaoma kupfuura simbi isingatsvi (16 GPa vs. ~2 GPa)
- · Haina makemikari — inodzivirira maasidhi, alkali, uye halogens (kunze kweHF)
- · Chinodzivirira magetsi >10¹⁴ Ω·cm, chinoita kuti chishandiswe munzvimbo dzine magetsi akawanda
- · Kushanda nguva dzose kusvika 1600°C, zvichipfuura miganhu yesimbi kana mapurasitiki
Kugadzirisa:
Tinogamuchira madhirowa evatengi (STEP/IGS format) uye tinopa prototyping inokurumidza (mavhiki 2-3). Zvikamu zvinogona kupihwa sezvakapwanywa, zvakakuyiwa, zvakakotamiswa, kana kuti zvakaporishwa (Ra ≤0.05 μm). Kutenderedza mativi, ma counterbores, maburi ane shinda, uye migero ye vacuum zviripo.
Cherechedza: Kune mashandisirwo anoda kusimba kwakanyanya kwekupwanyika, funga nezvezvikamu zve zirconia (ZrO₂). Kuti uwane kufambiswa kwepamusoro kwekupisa, tarisa zvigadzirwa zvedu zveBeO kana Si₃N₄. Ruzivo rwese rwuri pamusoro runotevera tafura yeAl₂O₃ yakapihwa (giredhi re99.8%).
