Nā mea hana keramika aluminahe mau mea keramika hana kiʻekiʻe i haku ʻia me ka alumini oxide. Hana pinepine ʻia lākou ma o nā kaʻina hana sintering wela kiʻekiʻe. Ma muli o ka ʻike alumina, ua hoʻokaʻawale ʻia lākou i nā papa haʻahaʻa haʻahaʻa (75%-85% Al₂O₃), medium-purity (96% Al₂O₃), a me nā papa kiʻekiʻe (≥99% Al₂O₃). Hōʻike ʻia e kahi microstructure paʻa a me nā waiwai kemika paʻa, hōʻike kēia mau substrates i ka ikaika mechanical koʻikoʻi, ke kūpaʻa wela kiʻekiʻe, a me ka insulation uila. Hoʻohana nui ʻia lākou ma ke ʻano he mea kumu i nā mea uila, nā ʻōnaehana mana, aerospace, a me nā ʻoihana holomua ʻē aʻe.
Nā Pōmaikaʻi o nā Substrates Seramika Alumina:
Hoʻopaʻa Uila Kūikawā
Me ka resistivity kiʻekiʻe (>10¹⁴ Ω·cm) a me ka dielectric constant haʻahaʻa (8-10), hoʻokaʻawale pono nā keramika alumina i nā au uila, e pale ana i ka pōkole o ke kaapuni ma nā wahi alapine kiʻekiʻe a i ʻole nā voltage kiʻekiʻe.
Ka Hoʻokele Wera Kiʻekiʻe
Hāʻawi nā substrates me ka 96% alumina i ka conductivity thermal o 24-28 W/(m·K), e hiki ai ke hoʻopuehu maikaʻi i ka wela mai nā ʻāpana uila e pale aku i ka wela nui a hoʻolōʻihi i ke ola o ka hāmeʻa.
Ikaika Mekanika Kiʻekiʻe
ʻO ka ikaika flexural o 300-400 MPa, i hui pū ʻia me ka paʻakikī kiʻekiʻe (Mohs hardness 9) a me ke kūpaʻa ʻana i ka ʻaʻahu, e hōʻoiaʻiʻo ana i ka lōʻihi i nā kūlana hana koi.
Paʻa Kemika Ikaika
Kūpaʻa i nā waikawa, alkalis, oxidation, a me ka makū, mālama nā substrates alumina i ke kūpaʻa o ka hana ʻoiai ma nā mahana kiʻekiʻe (a hiki i 1600°C) a i ʻole ma nā wahi ʻino.
Hana Hana Kūpono
ʻAe ka mīkini ʻana i ka miomio i ka laumania o ka ʻili micron, e hoʻokō ana i nā koi dimensional koʻikoʻi no nā noi e like me ka hoʻopili semiconductor.
Ka manawa hoʻouna: Nov-13-2025