Pūwero Korehau Ukume Porowhita-Alumina mō te Whakahaere Wafer Angiangi
Ko te pūwero porous a St.Cera he mea hanga mai i te 99.6% Al₂O₃ tino parakore me te pūwero tuwhera whakahaeretia o te 30–45% me te rahi o ngā pūwero ōrite mai i te 10 ki te 50 μm. Kāore i rite ki ngā pūwero kua haehaea, ka tukuna e te mata pūwero he korehau tohatoha puta noa i te taha o muri o te wafer, ka whakakore i te tohu taha, ā, ka taea te pupuri mārie i ngā wafer tino angiangi (≤100 μm) me ngā wafer kua piko. Ka tukuna e te rauemi te kaha piko ≥250 MPa me te pumau wera tae atu ki te 400°C i te hau.
Ngā Whakatakotoranga(i runga i te 99.6% Al₂O₃):
| Taonga | Uara |
| Rauemi | 99.6% Alumina (Mā) |
| Pūngao | 30–45% (ka taea te whakarerekē) |
| Rahi Pore Toharite | 10–50 μm |
| Kaha Whakapiko | ≥250 MPa |
| Kiato | 3.88 karamu/cm³ |
| Papatahi (neke atu i te 200mm) | ≤5 μm |
| Te Mahana Whakahaere Mōrahi | 400°C (hau) |
| Whakaotinga Mata | Kua tākaihia (Ra ≤0.8 μm) |
Ngā tono:
- · Te huri i te taha whakamuri o te anga angiangi (≤50 μm)
- · Te whakapiringa angiangi piko mō te tapatapahi
- · Te tangohanga o te mate takitahi
- · Te whakahaere i te papa karaihe
Te Hanga:
Paura i konatunatua ki ngā kaihanga pore → pēhi isostatic → sintering i te 1600°C → tākai ki te matotoru whakamutunga. Ka whakamātauria ia chuck mō te ōritetanga o te korehau (pēhanga rerekē <5%), ā, ka tirotirohia mō te tohatoha rahi o ngā pore (SEM).
Ngā painga ki ngā pūwero noa:
- · Kāore he tohu whakamuri o te angaanga, kāore hoki he nekehanga mate
- · Ka mau i ngā angaanga me te piko tae atu ki te 500 μm
- · He mata horoi-ā-ia-anō (kāore e āraihia ngā pore)
- · Ka whakakorea e te tautoko ōrite te ahotea ā-rohe
Cte whakaritenga:
He āhua porowhita, he āhua tapawhā rānei, he whānui 100–450 mm. E wātea ana te mowhiti hiri taha mō te whakahaere korehau kua wehea.
Tonoa he tauira mō te rahi o te wafer kua whakaritea e koe.
