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ʻO nā ʻāpana hana seramika (nā ʻāpana seramika)
Loaʻa i ka Fountyl ka mana koʻikoʻi, nā ʻāpana seramika e pili ana i nā paipu seramika, nā koʻokoʻo seramika, nā substrate seramika, nā pā seramika, nā pine hoʻonohonoho seramika, nā plungers seramika, nā kīwī seramika o nā ʻāpana hana seramika, i hoʻohana nui ʻia i nā kapuahi hoʻoheheʻe, semiconductors, aerospace, pump valves. , ikehu hou, kahua hoʻomalu wai, ʻāpana ʻaʻahu mechanical.
ʻO nā seramika i kūkulu ʻia he mau ceramics kiʻekiʻe me ka mechanical maikaʻi, thermal a me nā waiwai kemika i ke kūpaʻa wela kiʻekiʻe, ke kū ʻana o ka erosion, ka pale ʻana i ka corrosion, ka paʻakikī kiʻekiʻe, ka ikaika kiʻekiʻe, ka haʻahaʻa creep rate, i hoʻohana pinepine ʻia i nā ʻano hana like ʻole.
He ʻoi aku ka ikaika o nā seramika, paʻakikī, insulation, heat conduction, kiʻekiʻe wela ke kūpaʻa, oxidation kū'ē, corrosion kū'ē, kū'ē kū'ē, kiʻekiʻe wela o ka ikaika hiʻona, no laila, i loko o ka loa koʻikoʻi a me ka 'enekinia noi kūlana, ke kūlana kiʻekiʻe a me ka maikaʻi mechanical waiwai. , i loko o ka ʻoihana waiwai ua huki nui ʻia ka nānā ʻana, ke hoʻonui nei hoʻi kona ʻano hoʻohana. ʻO ke koi o ke kiʻekiʻe kiʻekiʻe, ke kūpaʻa ʻaʻahu kiʻekiʻe, nā ʻāpana mechanical hilinaʻi kiʻekiʻe no ka ʻoihana honua a me ka ʻoihana home e ʻoi aku ka koʻikoʻi, no laila he mea koʻikoʻi ke koi no nā huahana seramika, ʻoi aku ka nui o ka ulu ʻana o ka mākeke, i ka metallurgy, aerospace, ikehu. , Mīkini, Optics Fields loaʻa nā noi nui.
Loaʻa i kā mākou mau ʻano mea hoʻonaninani kūikawā
1. ʻO Silicon Nitride Ceramics
ʻO ka silicon nitride ceramics kahi ʻano hou o ka ʻenekinia seramika, ʻo ia ka ʻokoʻa mai nā silicate ceramics maʻamau ka hui pū ʻana o ka nitrogen a me ka silicon i ka mea mua i ka hui pū ʻana o nā waiwai paʻa covalent, no laila aia nā ʻano o ka ikaika paʻa ikaika a me ka insulation maikaʻi. .
ʻO ka ikaika o ka silicon nitride he kiʻekiʻe loa, he kiʻekiʻe loa ka paʻakikī, ʻo ia kekahi o nā mea paʻakikī loa o ka honua, maikaʻi ke kūpaʻa mahana, hiki ke mālama ʻia ka ikaika i 1200 ° C me ka hāʻule ʻole, a hiki i ka 1900 ° C e decompose. , a he kūpaʻa ʻino ʻino kemika, akā he mea hoʻokalakupua uila hoʻokō kiʻekiʻe, ʻO ka hana holoʻokoʻa o nā ʻano huahana silicon nitride ceramic i hana ʻia e ka microwave sintering kaʻina ua hiki i ka pae kiʻekiʻe honua.
2. Aluminum Nitride Ceramics
Theoretical thermal conductivity he 320W/m·k, e pili ana i 80% o ka thermal conductivity o ke keleawe, oiai alumini nitride i haʻahaʻa dielectric mau, kiʻekiʻe kū'ē, haʻahaʻa haʻahaʻa a kokoke i ka thermal hoʻonui coefficient o ke kilika, ka hana piha i oi aku mamua o Al2O3 , BeO, SiC ... etc., hoʻohana ʻia no ka insulator conductivity thermal kiʻekiʻe a me nā mea substrate uila. Hoʻokumu ka hui i nā ʻano mea like ʻole o ka alumini nitride ceramic me nā density ʻoi aku ka nui ma mua o 3.25, a me ka conductivity thermal o 120 ~ 200W / m · K, hiki ke hana ʻia nā seramika nitride alumini ma nā ʻano kikoʻī e like me ke koi.
3. Alumina Ceramics
ʻO ka alumina ceramics (artificial corundum) kahi mea hoʻolālā kiʻekiʻe kiʻekiʻe. He kiʻekiʻe loa kona helu hoʻoheheʻe, hiki ke hoʻohana ʻia e like me nā mea refractory kiʻekiʻe, e like me ka crucible, kiʻekiʻe wela wela o ka umu. Ke hoʻohana nei i nā pono o ka paʻakikī alumina, hiki ke hana i nā mīkini wili corundum i hoʻohana ʻia i loko o ka hale hana e wili i nā mea me ka liʻiliʻi o ka paʻakikī. Me ka hoʻomaʻemaʻe kiʻekiʻe, ka hoʻohana ʻana i ka ʻenehana holomua, hiki ke hana i nā seramika alumina i akaka, hiki ke hana i nā paipu kukui sodium kiʻekiʻe.
4. Silicon Carbide Ceramics
ʻO ka silikoni carbide ceramics kekahi mea waiwai nui, he ʻano mea superhard, liʻiliʻi liʻiliʻi, loaʻa iā ia ka lubricity, a ʻaʻahu ke kūpaʻa, me ka waika hydrofluoric, ʻaʻole ia e hoʻopili me nā mea ʻokoʻa inorganic ʻē aʻe, ke kūpaʻa corrosion; Ua kū'ē hoʻi i ka oxidation ma nā wela kiʻekiʻe. Eia kekahi, hiki iā ia ke pale i ke anu a me ka wela wela, i hoʻomehana ʻia i ʻoi aku ma mua o 1000 i ka lewa, ʻoi aku ka maʻalili a laila wela loa, a ʻaʻole e crumble. ʻO ia ka silicon nitride i loaʻa nā ʻano maikaʻi i hoʻohana pinepine ʻia e hana i nā ʻāpana mechanical e like me nā bearings, turbine blades, mechanical sealing apo, a me nā mold mau loa.
5. Porous Ceramics
Me ka porosity o 35-40% a me ka nui pore o 0.5-100um, hiki ke hoʻohana ʻia no ka hanu a i ʻole ka hoʻokaʻawale wai a me ka hoʻokaʻawale kinoea. He mea porous ceramic holomua.