Ngā Wāhanga Ukume Zirconia Whakapūmau-Yttria – Te Tino Pakari me te Ātete ki te Mau
Ka hangaia e St.Cera ngā wāhanga uku zirconia ritenga mā te whakamahi i te ZrO₂ (Y-TZP) kua whakapūmautia ki te yttria. He tino kaha te piko o tēnei rauemi (1000 MPa), he pakari pakaru teitei (5–8 MPa·m¹/²), ā, he pakeke Vickers o te 13 GPa. Ko te mātotoru he 6.03 g/cm³, kāore he mimiti wai. Ka taea te tuku wāhanga i te tae mā, mangu rānei. Mā te tikanga whakapakari whakawhiti ahurei a Zirconia ka tino ātete ki te horapa o ngā pakaru, he mea pai mō ngā wāhanga e pāngia ana e te pānga, te ru wera, te ahotea nui rānei. Ko ngā wāhanga noa ko ngā nohoanga takirere, ngā pūwero papu, ngā pine arataki muka, ngā taputapu tapahi, me ngā pūwero ātete-kakahu.
Ngā Whakatakotoranga (i runga i te Y-TZP ZrO₂):
| Taonga | Uara |
| Rauemi | Zirconia kua whakapūmautia e Yttria |
| Tae | Mā & Mangu |
| Kiato | 6.03 karamu/cm³ |
| Te mimiti wai | 0% |
| Rahi o te witi | 0.4 µm |
| Kaha Whakapiko | 1000 MPa |
| Te Pakari o te Whati | 5–8 MPa·m¹/² |
| Te Pakari o Vickers | 13 GPa |
| Te Tauwehenga o te Rangatahi | 200 GPa |
| Te Arahi Wera | 2 W/m·k |
| Te Whakawhanuitanga Wera (25-1000°C) | 10.5×10⁻⁶/℃ |
| Koki Ngaronga Hikohiko | 0.002 |
Ngā tono:
- · Ngā takirere tirotiro me ngā takirere pōro i roto i ngā papu matū
- · Ngā pine arataki whatu muka
- · Ngā patu me ngā mate tino tika
- · Ngā taputapu hauora me ngā taputapu niho
Te Hanga:
Pēhi isostatic → mīhini matomato → sintering → huri CNC → tākai/whakakanapa. Ngā ātete ±0.01 mm, mutunga mata Ra ≤0.05 μm.
Ngā painga ki te Alumina:
- · 3× kaha piko teitei ake (1000 vs 361 MPa)
- · He pakari ake te pakaru – ātete ki te pakaru
- · He ātete pai ake ki ngā ru wera
Whakaritenga:
Ngā āhuahanga uaua, ngā miro, me ngā kōhao moroiti (≥0.3 mm).
