Nā keramika alumina paʻakikī: nā mea holomua me ka hana maikaʻi loa

Hoʻohana nui ʻia nā keramika alumina ma nā ʻano he nui ma muli o ko lākou mau pono e like me ka paʻakikī kiʻekiʻe a me ke kūpaʻa kemika ikaika. Eia nō naʻe, ʻo ko lākou palupalu e kaupalena ana i kā lākou laulā noi. Ua puka mai nā keramika alumina paʻakikī a hoʻoponopono pono i kēia pilikia.

 Nā keramika alumina paʻakikīhiki ke hoʻopaʻa ʻia ma nā ʻano like ʻole. ʻO nā mea maʻamau e komo pū me ka zirconia toughening, kahi e hoʻomaikaʻi nui ai i ka paʻakikī ma ka hoʻohui ʻana iā ZrO₂ i alumina a me ka hoʻohana ʻana i kāna hoʻololi pae a me nā ʻano hana ʻē aʻe; whisker a me fiber toughening, e hoʻohui ana iā SiC, Si₃N₄ whiskers a i ʻole C, SiC fibers e hoʻonui i nā kahawai hoʻolaha māwae a hoʻopau i ka ikehu haki; ʻo ka toughening ʻāpana ka hoʻohui ʻana i nā ʻāpana modulus elastic kiʻekiʻe e like me SiC a me TiC e hoʻohuli a bifurcate i nā māwae.

 Ua hoʻomaikaʻi nui ʻia ka ikaika flexural a me ka ikaika hopena o nā keramika alumina toughened. No ka laʻana, hiki i ka ikaika flexural o nā keramika alumina toughened zirconia ke hiki i 480MPa, a ʻo ka ikaika hopena he 7MPam1/2.

 Ma ke ʻano o ka noi, ma ke kahua lapaʻau, hoʻohana ʻia ia e hana i nā mea hoʻokomo niho a me nā hui hana ma muli o kona biocompatibility maikaʻi a me ka paʻakikī kiʻekiʻe, hiki ke hōʻemi i nā pilikia; ma ke kahua semiconductor, ma ke ʻano he substrate hoʻopili hāmeʻa, hoʻohana ʻia ia i nā IGBT kaʻa uila, a pēlā aku ma muli o kona hoʻolaha wela maikaʻi loa, ka insulation a me ka ikaika mechanical; i nā mea ʻokiʻoki, hiki ke noho paʻa i nā mahana kiʻekiʻe a hoʻomaopopo i ka hana ʻana o ka hao hao a me nā alloys. Ke ʻālohilohi nei nā keramika alumina ikaika i nā kahua hou aʻe me kā lākou hana maikaʻi loa. Hāʻawi nā keramika Chemshun i nā keramika alumina ikaika me ke kū'ē ʻana i ka abrasion a me ke kū'ē ʻana i ka hopena no ka ʻōnaehana lawelawe mea nui.