Alumina Zirconia, Az-25, Az-40

ʻO Fused Alumina--Hoʻopuka ʻia ʻo Zirconia i loko o kahi umu ahi uila uila ma o ka hoʻohui ʻana i ke one zirconium quartz a me ka alumina. Hōʻike ʻia ʻo ia e ka paʻakikī a me ka paʻakikī, ka paʻakikī kiʻekiʻe, ka paʻa wela maikaʻi. He kūpono ia no ka hana ʻana i nā huila wili nui no ka hoʻoheheʻe ʻana i ke kila a me ka snagging foundry, nā mea hana i uhi ʻia a me ka puhi pōhaku, etc.

Hoʻohana ʻia ia ma ke ʻano he mea hoʻohui i nā refractory hoʻolei hoʻomau. Ma muli o kona paʻakikī kiʻekiʻe ua hoʻohana ʻia e hāʻawi i ka ikaika Mechanical i kēia mau refractory.

ʻO Yttria-Tetragonal Zirconia Polycrystals (Y-TZP) a me Alumina (Al2O3) ua hoʻokipa nui i nā ʻenehana waiwai implant ma muli o kā lākou hui maikaʻi ʻana o nā waiwai, e like me ka paʻakikī kiʻekiʻe, ka paʻakikī o ka haʻihaʻi, a me ka ikaika kiʻekiʻe a me ka ʻoʻoleʻa. ʻO nā mea nani no kahi ākea ākea o nā noi e uhi ana i ka laulā biomedical kahi i hoʻohana pinepine ʻia i nā noi niho e like me nā abutments implant prosthetic, nā alahaka, nā pou aʻa, a me ka lei seramika. Ma waho aʻe, hoʻohana ʻia lākou i nā noi ʻenekinia like ʻole me nā sensor oxygen, nā pale pale pale wela, nā mea ʻoki ʻoki, nā mea hoʻohui fiber optical, a me nā cell fuel oxide paʻa. He mea pono e hoʻomaopopo i ka hoʻomaikaʻi ʻana i nā waiwai mechanical o ka Y-TZP i pili i kona nui o ka palaoa maikaʻi me ka tetragonal i ka monoclinic phase transformation. Hoʻopili pū ʻia kēia hoʻololi ʻana me ka piʻi ʻana o ka leo ma kahi o 3-5% ka hopena i ka pale ʻana i ka hoʻolaha ʻana o ka māwae a pēlā e hoʻonui ai i ka paʻakikī. Eia nō naʻe, he mea nui e hoʻomaopopo e hiki ke hoʻololi wale ʻia kēia hoʻololi ma lalo o kekahi mau kūlana. Inā ʻike ʻia ka zirconia i kahi wela haʻahaʻa ma kahi ʻano haʻahaʻa ma waena o 100 ℃ a me 300 ℃, hiki ke alakaʻi i ka pōʻino o ka zirconia, ka hopena i ka ʻala a me ka microcracking. ʻIke ʻia kēia ʻano he hydrothermal aging a i ʻole Low-Temperature Degradation (LTD) a ua ʻike ʻia ʻo ia ke kumu e hoʻemi ai i ka hana o nā ʻāpana zirconia i nā noi orthopedic.

Ua hoʻomohala ka poʻe noiʻi i kekahi mau composites kahi i hoʻohui ʻia ai ka alumina i kahi ʻano zirconia. ʻO ke kumu o kēia hoʻohui ʻana, ʻo ia ka hoʻoikaika ʻana i ke kūʻē ʻana o LTD a me ka hoʻohana ʻana i nā hiʻohiʻona kūʻokoʻa o kēia mau seramika e hoʻomaikaʻi ai i nā waiwai mechanical o ka tetragonal zirconia matrix. ʻo ke ʻano ʻoʻoleʻa e kōkua i ke kāohi ʻana i nā ʻāpana zirconia. I loko o ke kaʻina hana hoʻoluʻu mai ka mahana sintering, hiki i ka tetragonal zirconia grains ke hoʻololi i kahi hoʻololi mai ka pae tetragonal i ka pae monoclinic. Ma kēia pōʻaiapili, mālama ka alumina i nā hua zirconia i kahi kūlana metastable, e pale ana i ka hoʻololi pihaʻana i ka māhele monoclinic. Hāʻawi kēia mālama ʻana i ka pae tetragonal i ka hoʻomaikaʻi ʻana i ka paʻakikī o ka mea ceramic