ʻO ka 'mea pāʻani a puni' i ka ʻoihana keramika ʻoihana: ke wehewehe nei i ka hiʻohiʻona kū hoʻokahi o nā keramika silicon carbide

Ma ke kahua o ka hana ʻoihana, ke kākau nei nā mea keramika i kahi moʻolelo hou. ʻAʻole e like me nā ipu keramika i ke ola o kēlā me kēia lā, ua hōʻike nā keramika ʻoihana i kā lākou hana koʻikoʻi ma nā kahua koʻikoʻi e like me ka metallurgy, ka ʻenekinia kemika, a me ka ikehu hou. Loaʻa i ka alumini oxide, silicon nitride, zirconium oxide a me nā mea ʻē aʻe ko lākou mau ʻano ponoʻī, akā i ka wā e hiki mai ai i ka ikaika piha ikaika loa o ka "mea pāʻani a puni",nā keramika silicon carbideʻo lākou nō ka mea maikaʻi loa.
Ua like nā keramika alumina me nā mea hana lima kuʻuna, i ʻike ʻia no ko lākou paʻakikī kiʻekiʻe a me ke kumukūʻai kūpono, akā ua maʻalahi lākou i ka hoʻoluhi ʻia e nā mahana kiʻekiʻe. ʻO nā keramika Silicon nitride, e like me nā mea hana pololei, he kūpaʻa haʻalulu wela maikaʻi loa, akā hiki ke hōʻike i nā "iwi ʻaoʻao palupalu" i kekahi mau wahi ʻino. Ua like nā keramika Zirconia me nā koa koa kūikawā, i ʻike ʻia no ko lākou paʻakikī loa, akā hiki iā lākou ke "hoʻomaha" i ka wā mua i nā kaua wela kiʻekiʻe a me nā kaua lōʻihi.
I ka hoʻohālikelike ʻana, ua hōʻike nā keramika silicon carbide i ka ikaika piha kupaianaha. ʻO kēia mea kristal, i kūkulu paʻa ʻia me nā ʻātoma kalapona silicon, loaʻa iā ia ʻekolu mau pono koʻikoʻi: ʻo kona conductivity thermal ikaika loa e mālama iā ia "mālie" i nā wahi wela kiʻekiʻe, ʻo kona kūpaʻa maikaʻi loa i ka ʻaʻahu e "ʻoi aku ka wiwo ʻole" i nā kūlana hana ʻino, a ʻo kona kūpaʻa kemika kū hoʻokahi e like me ka pale pale kūlohelohe, e kūʻē ana i ka hoʻouka kaua ʻana o nā ʻano media corrosive like ʻole.

Ma ke kahua o ka hoʻokele wela, ʻekolu manawa ka conductivity wela o nā keramika silicon carbide ma mua o ke kila maʻamau. ʻO kēia "talent dissipation heat" kūlohelohe e lilo ia i koho kūpono no nā umu wela kiʻekiʻe a me nā substrates semiconductor. Ke kū nei i ka pilikia o ka ʻaʻahu a me ka haehae, ʻo kona paʻakikī o ka ʻili ka lua wale nō i ka daimana, e hōʻike ana i kahi ola lawelawe lōʻihi loa i nā hiʻohiʻona e like me nā mīkini mining a me nā pipeline halihali. ʻO ka mea ʻoi aku ka kakaikahi, hiki i kēia mea ke mālama i kona kala kūlohelohe ʻoiai i nā wahi ʻino e like me nā waikawa ikaika, e hoʻololi pono ana i nā pono kūikawā o nā lako kemika.
Me ka hoʻomohala ikaika ʻana o ka ʻoihana ikehu hou, ke wehe nei nā keramika silicon carbide i nā ʻāina noi hou. Ma ke kahua o ka hana mana photovoltaic, lilo ia i mea kākoʻo maikaʻi loa e kū i ka wā; Ma ka laina hana pākahi lithium, ua hoʻololi ʻia i mau papa sintered kiʻekiʻe. Loaʻa kēia hiki ke "cross-border" mai kona hui hana kū hoʻokahi - hiki iā ia ke kū i nā mahana kiʻekiʻe o 1350 ℃ a hana paʻa i nā wahi anuanu loa o -60 ℃.

Ma ke ʻano he poʻe loea loea e komo nui ana i ke kahua o nā keramika silicon carbide, hoʻomau mākou i ka hoʻomaikaʻi ʻana i nā ʻano mea a me nā kaʻina hana sintering, me ka mālama ʻana i ko mākou mau pono kuʻuna, e hoʻomaikaʻi mau ana i ka ikaika mechanical a me ka pololei o nā dimensional o nā mea. Ma o nā lakio mea maka pololei a me ka ʻenehana sintering hou, ua hoʻomaikaʻi nui kā mākou huahana i ka hilinaʻi ma lalo o nā kūlana hana paʻakikī, e hāʻawi ana i kahi hōʻoia mea paʻa no nā lako ʻoihana hou.
ʻO ke koho ʻana i nā mea keramika ʻoihana, ʻo ia ke ʻimi nei i kahi kaulike ma waena o ka hana a me ke kumukūʻai. ʻO nā keramika silikona carbide, me ko lākou mau pono kūpono i ke kumukūʻai, ke wehewehe hou nei i nā kūlana o ka hana ʻoihana - e hōʻemi ana i ka pinepine o ka hoʻololi me ke ola lōʻihi, e hōʻemi ana i nā kumukūʻai mālama me ka hana paʻa, a me ka hoʻomaʻalahi ʻana i ke koho ʻana i nā lako me kahi ākea ākea o nā noi. ʻO kēia paha ke kumu nui e helu nei nā ʻenekinia he mea makemake nui ʻia.
Ke kamaʻilio mākou e pili ana i ka holomua o ka ʻoihana, ʻo ka hana hou ʻana o nā mea hana ka mea nui loa a koʻikoʻi hoʻi. ʻO ka ulu mau ʻana o nā keramika silicon carbide ʻaʻole wale ia e hōʻike ana i kahi holomua i ka ʻenehana keramika, akā ke hōʻike nei hoʻi i kahi lele hou i ka pono o ka hana ʻoihana. I kēia au o ka hahai ʻana i ka hana hope loa, ke wehe nei kēia mea keramika "noʻonoʻo" i kahi ākea noʻonoʻo hou no ka hana hou.