1. Crystal Framework ndi Bonding Natural of Ti ₂ AlC
1.1 Limit Phase Mamembala a Banja ndi Atomic Piling Series
(Ti2AlC MAX Phase Powder)
Ti ₂ AlC ndi ya malire siteji banja, gulu la nanolaminated ternary carbides ndi nitrides ndi formula wamba Mₙ ₊₁ AXₙ, pomwe M ndi chitsulo choyambirira kwambiri, A ndi gawo la A-gulu, ndipo X ndi carbon kapena nitrogen.
Mu Ti ₂ AlC, titaniyamu (Za) imagwira ntchito ngati gawo la M, aluminiyamu (Al) monga gawo la A, ndi carbon (C) monga X chigawo, kukulitsa a 211 chimango (n=1) okhala ndi zigawo zosinthana za Ti ₆ C octahedra ndi ma atomu a Al zowunjikidwa motsatira c-axis mu latisi ya hexagonal.
Zomangamanga zamtundu umodzi wamtunduwu zimaphatikiza zomangira zolimba mkati mwa Ti.– C zigawo zomangira zitsulo zofooka pakati pa ndege za Ti ndi Al, kumabweretsa zinthu zosakanizidwa zomwe zimawonetsa zonse za ceramic ndi zitsulo.
The durable Ti– C covalent network imapereka kukhazikika kwakukulu, kukhazikika kwamafuta, ndi kukana kwa okosijeni, pamene chitsulo Ti– Al bonding imathandizira madulidwe amagetsi, kulekerera kwamphamvu kwamafuta, ndi kukana kuwonongeka kosazolowereka muzoumba wamba.
Upawiri uwu umachokera ku chikhalidwe cha anisotropic cha mgwirizano wamankhwala, zomwe zimalola machitidwe otaya mphamvu monga kink-band mapangidwe, delamination, ndi ndege zoyambira zimagawikana ndi nkhawa, m'malo mowononga fracture yosweka.
1.2 Digital Framework ndi Anisotropic Properties
Kukhazikitsidwa kwa digito kwa Ti two AlC kumakhala ndi ma d-orbitals kuchokera ku titaniyamu ndi p-orbitals kuchokera ku kaboni ndi aluminiyamu yopepuka., kutsogolera ku makulidwe apamwamba a mayiko pa digiri ya Fermi ndi makonzedwe obadwa nawo amagetsi ndi matenthedwe pamayendedwe oyambira ndege..
Izi zitsulo madutsidwe– zachilendo mu zinthu za ceramic– amalola ntchito mu mkulu-kutentha maelekitirodi, osonkhanitsa omwe alipo, ndi electromagnetic chitetezo.
Home anisotropy amatchulidwa: kukulitsa kutentha, flexible modulus, ndi resistivity magetsi zimasiyana kwambiri pakati pa axis (mu-ndege) ndi c-axis (kunja kwa ndege) mayendedwe chifukwa cha kugwirizana kwagawanika.
Mwachitsanzo, kukula kwa kutentha motsatira c-axis ndikocheperako poyerekeza ndi axis, kumathandizira kukulitsa kukana kugwedezeka kwa kutentha.
Komanso, zinthuzo zikuwonetsa kuuma kwa Vickers komwe kumachepetsedwa (~4– 6 Grade point average) kusiyana ndi zadothi wamba monga alumina kapena silicon carbide, komabe imasunga modulus yapamwamba ya Achinyamata (~ 320 GPA), kuwonetsetsa kuphatikiza kwake kosiyana kwa makhalidwe ofewa ndi kulimba.
Izi zimapangitsa Ti awiri a AlC ufa makamaka kukhala oyenera ma ceramics osinthika komanso odzipangira okha mafuta.
( Ti2AlC MAX Phase Powder)
2. Kaphatikizidwe ndi Kusamalira Ti Two AlC Powder
2.1 Solid-State ndi Njira Zapamwamba Zopangira Ufa
Ti ₂ AlC ufa amapangidwa makamaka kudzera pamayankho olimba pakati pa zoyambira kapena zoyambira., monga titaniyamu, aluminiyamu, ndi carbon, pamavuto a kutentha kwambiri (1200– 1500 °C )m'malo opanda mpweya kapena vacuum cleaner atmospheres.
Zimene anachita: 2Za + Al + C → Ti ₂ AlC, ziyenera kuyendetsedwa mosamala kwambiri kupewa kupanga magawo omaliza monga TiC, Ndi Atatu Al, kapena TiAl, zomwe zimasokoneza magwiridwe antchito.
Kuphatikizika kwamakina komwe kumatsatiridwa ndi chithandizo cha kutentha ndi njira yowonjezera yomwe imagwiritsidwa ntchito kwambiri, komwe ma elemental ufa amapukutidwa ndi mpira kuti asakanizike mulingo wa atomiki asanalowetsedwe kuti apange gawo la MAX..
Njira iyi imathandizira kuwongolera kukula bwino pang'ono ndi homogeneity, zofunikira pakupanga njira zophatikizira.
Njira zowonjezera zowonjezera, monga kuyambitsa plasma sintering (SPS), kuyika kwa nthunzi wa mankhwala (CVD), ndi kaphatikizidwe ka mchere wosungunuka, perekani njira zopita ku phase-pure, nanostructured, kapena mayendedwe a Ti awiri a AlC ufa okhala ndi ma morphologies makonda.
Kusungunuka mchere kaphatikizidwe, makamaka, amalola kuchepetsa kutentha ndi kufalikira kwabwinoko pang'ono pochita ngati sing'anga yosinthira yomwe imathandizira kufalikira kwa kinetics..
2.2 Powder Morphology, Chiyero, ndi Kusamalira Zinthu Zoyenera Kuziganizira
The morphology ya Ti awiri AlC ufa– kuchokera ku tinthu tating'onoting'ono tosiyanasiyana tomwe timakhala ngati mapulateleti kapena zozungulira– zimatengera kaphatikizidwe njira ndi pambuyo pokonza zochita monga mphero kapena gulu.
Tinthu tating'onoting'ono tomwe timakhala ngati mapulaneti timawonetsa mawonekedwe amtundu wa kristalo ndipo ndi opindulitsa kulimbikitsa zophatikizika kapena kupanga zida zambiri..
Ukhondo wapamwamba ndi wofunikira; ngakhale zochepa za TiC kapena Al two O zisanu ndi chimodzi zowonongeka zimatha kusintha makina, zamagetsi, ndi zizolowezi za okosijeni.
Kusintha kwa X-ray (Zithunzi za XRD) ndi ma electron microscopy (POPANDA/POKHA) amagwiritsidwa ntchito nthawi zonse kuwunika mawonekedwe a gawo ndi microstructure.
Chifukwa cha kupepuka kwa aluminiyamu kuyanjananso ndi oxygen, Ti ₂ AlC ufa ndi pachiwopsezo cha okosijeni pamtunda, kupanga zocheperako za Al ₂ O zosanjikiza ziwiri zomwe zimatha kusokoneza malonda koma zimatha kulepheretsa kulumikizana kapena kulumikizana pakati pamitundu yambiri..
Choncho, malo osungira pansi pa malo osagwira ntchito ndi kukonzedwa m'malo olamulidwa ndikofunika kuti asunge umphumphu wa ufa.
3. Makhalidwe Othandiza ndi Njira Zogwirira Ntchito
3.1 Kukhalitsa Kwamakina ndi Zowonongeka Kukaniza
Chimodzi mwazinthu zodabwitsa kwambiri za Ti ₂ AlC ndikutha kulimbana ndi kuwonongeka kwamakina popanda kusweka mowopsa., nyumba yogona yomwe imatchedwa “kumawononga kukana” kapena “makina” mu ceramics.
Pansi matani, zinthuzo zimagwirizana ndi nkhawa pogwiritsa ntchito zida monga microcracking, zofunika ndege delamination, ndi chimanga malire kusuntha, zomwe zimawononga mphamvu ndikuletsa kufalikira kwa fracture.
Izi ndizosiyana kwambiri ndi zoumba zakale, zomwe nthawi zambiri zimalephera mwadzidzidzi zikafika malire awo otanuka.
Ti ₂ Zigawo za AlC zitha kupangidwa pogwiritsa ntchito zida zachikhalidwe popanda pre-sintering, mphamvu yachilendo pakati pa zoumba zotentha kwambiri, kuchepetsa mitengo yopangira ndikupangitsa kuti zikhale zovuta kupanga ma geometries ovuta.
Kuphatikiza apo, imawonetsa kukana kwamphamvu kwamafuta chifukwa cha kutsika kwamafuta komanso kutsika kwamafuta, kuzipanga kukhala zoyenera kwa zigawo zomwe zimasinthidwa mwachangu kutentha kwa msinkhu.
3.2 Kukaniza kwa Oxidation ndi Chitetezo Chachikulu Chotentha
Pakutentha kwambiri (monga 1400 ° C mumlengalenga), Ti ₂ AlC imapanga alumina yoteteza (Onse awiri O ATATU) kukula pamwamba pake, yomwe imagwira ntchito ngati chotchinga cholepheretsa kufalikira kwa mpweya, kuchepetsa kwambiri makutidwe ndi okosijeni owonjezera.
Khalidwe lodzipusitsali ndi lofanana ndi lomwe limawonekera muzitsulo zopanga alumina ndipo ndizofunikira pachitetezo chanthawi yayitali muzamlengalenga ndi kugwiritsa ntchito mphamvu..
Komabe, pamwamba 1400 °C, mapangidwe osateteza TiO awiri ndi makutidwe ndi okosijeni wamkati wa aluminiyamu kungayambitse chiwonongeko chofulumira., kuchepetsa kugwiritsa ntchito kwambiri kutentha kwambiri.
Pakuchepa kapena zoikamo inert, Ti two AlC imasunga kukhazikika kwadongosolo pafupifupi 2000 °C, kuwonetsa zowoneka bwino za refractory.
Kukana kwake kwa kuwala kwa neutron ndi kuchepa kwa nambala ya atomiki kumapangitsanso kukhala chinthu chopangira zida zanyukiliya fusion reactor..
4. Ntchito ndi Future Technical Assimilation
4.1 Zigawo Zotentha Kwambiri ndi Zomangamanga
Ti ₂ AlC ufa umagwiritsidwa ntchito popanga zoumba zazikulu komanso zomaliza zamlengalenga, yokhala ndi masamba a turbine, chowotcha, ndi mbali zotenthetsera zomwe kukana kwa okosijeni ndi kukana kugwedezeka kwamafuta ndikofunikira.
Kutenthedwa kapena kusonkhezera plasma sintered Ti awiri AlC amawonetsa kusinthasintha kwakukulu komanso kukana kukwawa., kupitilira ma ceramics angapo a monolithic pamawonekedwe a cyclic thermal loading.
Monga zokutira zakuthupi, imateteza magawo azitsulo kuchokera ku oxidation ndi kuvala muzamlengalenga ndi makina opanga magetsi.
Kuthekera kwake kumathandizira kukonza muntchito ndikumaliza mwatsatanetsatane, phindu lalikulu pa zoumba zosalimba zomwe zimafunikira kugaya ruby.
4.2 Zothandiza komanso Zochita Zambiri Zogulitsa
Kupitilira ntchito zomanga, Ti ₂ AlC ikufufuzidwa m'mapulogalamu othandiza omwe amagwiritsira ntchito magetsi ake ndi mawonekedwe ake..
Imagwira ntchito ngati kalambulabwalo wopanga ma MXene amitundu iwiri (mwachitsanzo, Atatu C ₂ Tₓ) kudzera pakuzindikira kwa Al layer, kuthandizira mapulogalamu posungira mphamvu, masensa, ndi chitetezo cha electromagnetic kusokoneza.
Muzinthu zophatikizika, Ti ₂ AlC ufa umapangitsa kukhazikika komanso kutenthetsa kwa ma composites a ceramic matrix (CMCs) ndi zitsulo matrix composites (MMCs).
Chikhalidwe chake chamafuta pa kutentha– chifukwa chosavuta kumeta ubweya wa ndege– imapangitsa kuti ikhale yoyenera mayendedwe odzipangira okha mafuta komanso magawo osuntha mumayendedwe apamlengalenga.
Kafukufuku yemwe akubwera amayang'ana kwambiri kusindikiza kwa 3D kwa ma inki a Ti ₂ AlC-based popanga mawonekedwe a ukonde wa zida zadothi zadothi., kukankhira malire a zopangira zowonjezera muzinthu zotsutsa.
Powombetsa mkota, Ti ₂ AlC MAX gawo la ufa likuyimira kusintha kwa paradigm mu sayansi ya zinthu za ceramic, kulumikiza kusiyana pakati pa zitsulo ndi zadothi kudzera m'mapangidwe ake a atomiki ogawanika ndi mgwirizano wosakanizidwa.
Kuphatikiza kwake kosiyana kwa machinability, chitetezo chamafuta, kukana kwa okosijeni, ndi madulidwe amagetsi amalola zigawo za m'badwo wotsatira zazamlengalenga, mphamvu, ndi kupanga zapamwamba.
Monga kaphatikizidwe ndi kusamalira matekinoloje okhwima, Ti two AlC idzachita ntchito yofunika kwambiri muzinthu zaumisiri zomwe zimapangidwira malo owopsa komanso osagwira ntchito.
5. Wopereka
RBOSCHCO ndi ogulitsa odalirika padziko lonse lapansi & wopanga ndi over 12 zaka zambiri popereka mankhwala apamwamba kwambiri komanso Nanomaterials. Kampaniyo imatumiza kumayiko ambiri, monga USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, nkhukundembo, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. Monga wopanga chitukuko cha nanotechnology, RBOSCHCO imalamulira msika. Gulu lathu la akatswiri ogwira ntchito limapereka mayankho abwino kwambiri othandizira kukonza magwiridwe antchito amakampani osiyanasiyana, pangani mtengo, ndi kuthana mosavuta ndi zovuta zosiyanasiyana. Ngati mukuyang'ana aluminium carbide, chonde omasuka kulankhula nafe ndi kutumiza kufunsa.
Tags: Ti2AlC MAX Phase Powder, Ti2AlC Powder, Titanium aluminium carbide ufa
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