1. Nā ʻano hoʻolālā a me ke ʻano hoʻopaʻa kūʻokoʻa
1.1 Kaila Crystal a me ka Layered Atomic Arrangement
(Ti₃AlC₂ pauda)
Aia nā ʻelua AlC ₂ i kahi papa ʻokoʻa o nā seramika ʻāpana i ʻike ʻia ʻo MAX pae., i hea “M” hōʻike i kahi kila hoʻololi mua, “A” kū no ka hui A (ka hapa nui o IIIA a i ʻole IVA) ʻeleʻele, a “X” hōʻike i ke kalapona a/a i ʻole ka nitrogen.
ʻO kona ʻano aniani hexagonal (hui ākea P6 SIX/ mmc) loaʻa nā ʻāpana ʻokoʻa o ka kaʻana like ʻana o Ti ₆ C octahedra a me nā ʻātoma alumini kaumaha māmā i hoʻonohonoho ʻia i kahi ʻano nanolaminate.: O– C– O– Al– O– C– O, e hana ana i kahi pae 312-type MAX.
Loaʻa kēia hoʻopaʻa ʻana i ka hopena i ka covalent paʻa Ti– ʻO nā paʻa C i loko o nā ʻāpana carbide kila hoʻololi, ʻoiai e noho ana nā ʻātoma Al i ka ʻāpana A, hāʻawi i nā ʻano hoʻopaʻa like metala.
ʻO ka hui pū ʻana o ka covalent, ionic, a me ka hoʻopaʻa metala e hāʻawi iā Ti ʻeono AlC ʻelua me kahi ʻano ʻano like ʻole o ka keramika a me ka metala hale noho a i ʻole nā mea kūʻai aku., ka hoʻokaʻawale ʻana mai nā seramika monolithic maʻamau e like me ka alumina a i ʻole ka silika carbide.
Hōʻike ka microscopy electron hoʻonā kiʻekiʻe i nā pilina mea hoʻohana atomically ma waena o nā papa, e kōkua ana i nā ʻano kino anisotropic a me nā mea hoʻohālikelike hoʻokahi o ke ʻano ma lalo o ka hopohopo.
He mea koʻikoʻi kēia ʻano ʻāpana i kona ʻae ʻana i ka pōʻino, hiki i nā ʻōnaehana e like me ka hoʻokumu ʻana i ka kink-band, delamination, a me ka pahee mokulele mokulele– ʻaʻole maʻamau i nā porcelains palupalu.
1.2 Synthesis and Powder Morphology Control
Hoʻohui pinepine ʻia ka pauka ʻelima AlC ₂ me nā ala pane kūʻokoʻa, e pili ana i ka hoemi carbothermal, hookui pumehana, a i ʻole e hoʻoulu i ka sintering plasma (SPS), e hoʻomaka ana mai nā mea mua a hui pū ʻia e like me Ti, Al, a me kalapona ʻeleʻele a i ʻole TiC.
ʻO kahi ala pane maʻamau: 3O + Al + 2C → Ti Five AlC ELUA, hana ʻia ma lalo o ke ʻano inert ma nā pae wela ma waena 1200 ° C a 1500 ° C no ka pale ʻana i ka alumini māmā māmā a me ka hoʻokumu ʻana o ka oxide.
No ka loaa nui, pauka maʻemaʻe, mana stoichiometric pololei, nā manawa wili lōʻihi, a me ka hoʻonui ʻana i nā moʻokāki hoʻomehana home e pono ai e hoʻopau i nā pae hoʻokūkū e like me TiC, TiAl, a i ʻole Ti ʻElua AlC.
Hoʻohana nui ʻia ka hoʻohuihui mīkini i hoʻopili ʻia e ka annealing e hoʻoikaika i ka reactivity a me ka homogeneity ma ka nanoscale.
ʻO ka hopena o ka pauka morphology– ʻokoʻa mai nā ʻāpana micron-nui a hiki i nā crystallites like-plate– pili i ka hana ʻana i nā ʻāpana a me ka wili post-synthesis.
Hōʻike nā ʻāpana ʻano platelet i ka anisotropy koʻikoʻi o ke kāʻei aniani, me nā ana nui ma nā mokulele kumu a me ka puʻupuʻu lahilahi ma nā kuhikuhi c-axis.
ʻO ka hōʻailona kiʻekiʻe ma o ka ʻokoʻa X-ray (XRD), ka nānā ʻana i ka microscopy electron (KA MEA), a me ka ikehu-dispersive X-ray spectroscopy (EDS) hōʻoia i ka maʻemaʻe o ka pae, stoichiometry, a me ka māhele ʻāpana ʻāpana kūpono no nā noi o lalo.
2. Mechanical and Practical Feature
2.1 Kū'ē Poino a me ka Mīkini
( Ti₃AlC₂ pauda)
ʻO kekahi o nā hiʻohiʻona koʻikoʻi o Ti ₃ AlC ʻelua pauka ʻo ia kona ʻae ʻana i nā pōʻino., kahi waiwai i ʻike ʻole ʻia i loko o nā seramika maʻamau.
ʻAʻole like me nā huahana brittle e poʻe pōʻino ma lalo o nā tona, ʻElima AlC ʻelua hōʻike i ka pseudo-ductility me nā ʻōnaehana e like me ka microcrack deflection, huki palaoa, a me ka delamination ma ka nawaliwali o Al-layer interface.
ʻAe kēia i ka huahana e lawe i ka mana ma mua o ka pau ʻole, ʻoi aku ka lōʻihi o ka māwae– ʻokoʻa maʻamau mai 7 i 10 MPa · m ¹/ ²– hoʻohālikelike ʻia me
ʻO RBOSCHCO kahi mea hoʻolako pauka Ti₃AlC₂ hilinaʻi honua & mea hana me ka oi 12 mau makahiki i ka hoʻolako ʻana i nā kemika kiʻekiʻe kiʻekiʻe a me nā Nanomaterials. Hoʻokuʻu aku ka hui i nā ʻāina he nui, e like me USA, Kanaka, ʻEulopa, UAE, ʻApelika Hema,Tanazania,Kenia,ʻAikupita,Naigeria,Kameruna,Ukanada,Kuleke,Mekiko,ʻAkepaikana,Pelekiuma,Kupelo,Czech Republic, Palakila, Kili, ʻAlekina, Dubai, Iapana, Korea, Wiekanama, Tailani, Malaia, ʻInidonesia, Nuhōlani,Kelemānia, Palani, Ikalia, Pokukala etc. Ma ke ʻano he mea hana hoʻomohala nanotechnology alakaʻi, ʻO RBOSCHCO ka luna o ka mākeke. Hāʻawi kā mākou hui hana ʻoihana i nā hāʻina kūpono e kōkua i ka hoʻomaikaʻi ʻana i ka pono o nā ʻoihana like ʻole, hana waiwai, a maʻalahi hoʻi i nā pilikia like ʻole. Inā ʻoe e ʻimi nei i ka pauka Ti₃AlC₂, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou.
Nā huaʻōlelo: ti₃alc₂, Ti₃AlC₂ Pauka, Aluminum carbide Titanium
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