1. Crystal Framework uye Bonding Chimiro cheTi ₂ AlC
1.1 Dzimisa Chikamu Nhengo dzeMhuri uye Atomic Piling Series
(Ti2AlC MAX Phase Powder)
Ti ₂ AlC ndeyekudzikamisa nhanho mhuri, kirasi ye nanolaminated ternary carbides uye nitrides ine general formula Mₙ ₊₁ AXₙ, uko M iri simbi yepakutanga kwazvo, A chinhu cheA-boka, uye X icarbon kana nitrogen.
MuTi ₂ AlC, titanium (Of) inoshanda seM chikamu, aluminium (Al) sechikamu cheA, uye carbon (C) sechikamu che X, kuvandudza a 211 framework (n=1) ine matinji anotsinhanisa eTi ₆ C octahedra neAl maatomu akaturikidzana pamwe chete ne-c-axis mune hexagonal lattice..
Iyi imwe-ye-ye-yemhando yakaturikidzana dhizaini inosanganisira yakasimba covalent zvisungo mukati meTi.– C akaturikidzana ane simbi isina simba zvisungo pakati peTi neAl ndege, zvichikonzera chinhu chakasanganiswa chinoratidza zvese ceramic uye simbi maficha.
Iyo yakasimba Ti– C covalent network inopa yakanyanya kuomarara, kugadzikana kwekupisa, uye oxidation kuramba, uku simbi Ti– Al bonding inogonesa conductivity yemagetsi, thermal shock tolerance, uye kukuvadza kuramba kusingawanzo mumhando dzeceramics.
Uhu huviri hunobuda kubva kune anisotropic chimiro chemakemikari bonding, iyo inobvumira kushandiswa kwemagetsi emagetsi akadai sekink-band formation, delamination, uye yekutanga ndege inotsemuka pasi pekunetseka, pane kuparadza kutyoka kunoparadza.
1.2 Digital Framework uye Anisotropic Properties
Iyo dhijitari setup yeTi mbiri AlC inoratidzira inopindirana d-orbitals kubva titanium uye p-orbitals kubva kabhoni uye yakareruka uremu aluminium., zvinotungamira kuhupamhi hwepamusoro hwematunhu paFermi degree uye innate magetsi uye ekupisa conductivity pamwe neiyo yekutanga ndege..
Izvi esimbi conductivity– zvisina kujairika mune zvigadzirwa zveceramic– inobvumira zvikumbiro mu-high-temperature electrodes, vaunganidzi varipo, uye electro-magnetic kudzivirira.
Home anisotropy inodaidzwa: kuwedzera kwekushisa, flexible modulus, uye resistivity yemagetsi inosiyana zvakanyanya pakati pe-axis (mundege) uye c-axis (kunze kwendege) mirayiridzo semugumisiro wekuparadzaniswa kwekubatana.
Semuyenzaniso, Kupisa kwemafuta pamwe ne-c-axis kushoma pane pamwe nea-axis, zvichibatsira kuwedzera kupikisa kwekuvhunduka kwekupisa.
Uyezve, iyo nyaya inopa yakaderedzwa Vickers kuomarara (~ 4– 6 Grade point average) Yakasiyana neyakajairwa porcelains senge alumina kana silicon carbide, zvakadaro inochengetedza yakakwira Youthful's modulus (~ 320 GPa), kuratidzira musanganiswa wayo wakasiyana wehunhu hwakapfava uye kusimba.
Iyi chiyero inoita Ti mbiri AlC poda inonyanya kukodzera machinable ceramics uye self-lubricating composite.
( Ti2AlC MAX Phase Powder)
2. Synthesis uye Kubata kweTi maviri AlC Powder
2.1 Solid-State uye Yepamberi Powder Manufacturing Techniques
Ti ₂ AlC poda inogadzirwa zvakanyanya kuburikidza neakasimba-nyika mhinduro pakati pekutanga kana komputa precursors., zvakadai se titanium, aluminium, uye carbon, pasi pematambudziko ekupisa kwepamusoro (1200– 1500 °C )mune inert kana vacuum cleaner atmospheres.
The reaction: 2Of + Al + C → Ti ₂ AlC, inofanirwa kudzorwa zvakanyanya kudzivirira kuumbwa kwezvikamu zvekupedzisa seTiC, Ti Three Al, kana TiAl, izvo zvinoputsa maitiro anoshanda.
Mechanical alloying inotemerwa nekupisa kurapa ndeyekuwedzera yakawedzera kushandiswa kwehunyanzvi, uko elemental poda inogayiwa bhora kuti iwane kusanganiswa kweatomic-level isati yaiswa kuti igadzire iyo MAX chikamu..
Iyi nzira inogonesa yakanaka bit size control uye homogeneity, yakakosha kune itsva nzira dzekubatanidza.
Extra sophisticated techniques, senge trigger plasma sintering (SPS), kemikari vapor deposition (CVD), uye yakanyungudutswa munyu synthesis, kupa nzira kuenda kuchikamu-chakachena, nanostructured, kana yakatarisana neTi maviri maAlC poda ane customized morphologies.
Yakanyungudutswa munyu synthesis, kunyanya, inobvumira kudzikiswa tembiricha yekuita uye zvirinani kupararira zvishoma nekuita senge shanduko inosimudzira diffusion kinetics..
2.2 Powder Morphology, Kuchena, uye Kutarisira Kwezvinhu zvekufunga nezvazvo
Iyo morphology yeTi maviri AlC poda– kubva kumabhiti asina kuenzana emakona kusvika kuplatelet-like kana raundi granules– zvinoenderana neiyo nzira yekubatanidza uye post-kugadzirisa zviito senge milling kana chikamu.
Platelet-shaped particles anoratidza iyo yemukati yakaturikidzana crystal framework uye inobatsira pakusimbisa macomposites kana kugadzira mameseji akawanda..
Kuchena kwechikamu chepamusoro kwakakosha; kunyangwe zvidiki zvidiki zveTiC kana Al maviri O zvitanhatu zvakasvibiswa zvinogona kuchinja zvakanyanya mechanika, yemagetsi, uye oxidation maitiro.
X-ray diffraction (XRD) uye electron microscopy (PASINA/KUVA) anogara achishandiswa kuongorora chikamu make-up uye microstructure.
Nekuda kwehuremu huremu hwealuminium reactivity pamwe neokisijeni, Ti ₂ AlC poda iri panjodzi kune pamusoro penzvimbo oxidation, kugadzira slim Al ₂ O maviri akaturikidzana anogona kupfuudza chigadzirwa asi anogona kutadzisa sintering kana kupindirana kwekubatana mumubatanidzwa..
Naizvozvo, nzvimbo yekuchengetedza pasi peinert ambience uye kugadzirisa munzvimbo dzakadzorwa zvakakosha kuchengetedza hupfu hwehupfu.
3. Mashandiro Anobatsira uye Maitiro Ekuita
3.1 Mechanical Durability uye Kukuvadza Kupokana
Pakati pezvimwe zvinoshamisa maficha eTi ₂ AlC kugona kwayo kubata kurwisa kukuvadzwa kwemuchina pasina kutsemuka zvine njodzi., imba yekugara inonzi “zvinokuvadza kuramba” kana “machinability” mu ceramics.
Pasi pematani, iyo zvinhu inokodzera kusagadzikana kuburikidza nemidziyo yakadai se microcracking, basic ndege delamination, uye muganhu wezviyo unofamba, iyo inoparadza simba uye inodzivirira kuputsika kupararira.
Iyi miitiro inosiyana zvakanyanya neyechinyakare ceramics, which generally fall short suddenly upon reaching their elastic limit.
Ti ₂ AlC components can be machined utilizing traditional tools without pre-sintering, an uncommon capacity amongst high-temperature ceramics, minimizing production prices and making it possible for complicated geometries.
Pamusoro pe, it exhibits excellent thermal shock resistance as a result of low thermal growth and high thermal conductivity, making it suitable for components subjected to fast temperature level adjustments.
3.2 Oxidation Resistance and High-Temperature Security
At raised temperatures (sekudaro 1400 ° C mumhepo), Ti ₂ AlC develops a protective alumina (Zvose zviviri O ZVITATU) scale on its surface area, which acts as a diffusion barrier versus oxygen access, significantly slowing down additional oxidation.
Uyu hunhu hwekuzviparira hwakafanana neihwo hunoonekwa mualumina-forming alloys uye yakakosha pakuchengetedza kwenguva refu mumhepo uye kushandiswa kwesimba..
Zvisinei, pamusoro 1400 °C, kuumbwa kweasingadziviriri TiO maviri uye oxidation yemukati yealuminium inogona kukonzera kuparadzwa kukuru., kuderedza kushandiswa kwepamusoro-kwepamusoro-tembiricha.
Mukudzikira kana inert marongero, Ti mbiri AlC inochengetedza kugadzikana kwemaitiro anenge 2000 °C, kuratidza phenomenal refractory hunhu.
Kupokana kwayo kune neutron irradiation uye yakaderedzwa nhamba yeatomu zvakare inoita kuti ive mumiriri chigadzirwa chenyukireya fusion reactor zvikamu..
4. Zvishandiso uye Remangwana Tekinoroji Assimilation
4.1 High-Tembiricha uye Zvikamu Zvikamu
Ti ₂ AlC poda inoshandiswa kugadzira maceramics akawanda uye kupera kwemhepo yakanyanyisa, zvinosanganisira turbine blades, burner, uye heater zvikamu uko oxidation kuramba uye thermal shock resistance zvakakosha.
Kupisa-kudzvanywa kana kukurudzira plasma sintered Ti mbiri AlC inoratidza yakakwirira flexural simba uye zvinokambaira kuramba., kubuda akawanda monolithic ceramics mune cyclic thermal loading scenarios.
Sechinhu chekuputira, inochengetedza metallic substratums kubva kune oxidation uye kupfeka mune aerospace uye magetsi ekugadzira masisitimu.
Iko machinability yayo inogonesa mu-sevhisi kugadzirisa uye kunyatso kupedzisa, bhenefiti yakakura pamusoro pemakeramiki asina kusimba anoda ruby kugaya.
4.2 Inoshanda uye Multifunctional Chigadzirwa Systems
Kupfuura mabasa ekuvaka, Ti ₂ AlC iri kuongororwa mumashandisirwo anobatsira ekusimudzira maitiro ayo emagetsi uye akaturikidzana chimiro..
Inoshanda seyakatangira yekugadzira maviri-dimensional MXenes (e.g., Iwo matatu C ₂ Tₓ) kuburikidza nekuona etching yeAl layer, kugonesa maapplication mukuchengetedza simba, sensors, uye electro-magnetic disturbance kuchengetedza.
Muzvigadzirwa zvakasanganiswa, Ti ₂ AlC poda inovandudza kusimba uye kupisa kwekushisa kweceramic matrix composites. (CMCs) uye simbi matrix composites (MMCs).
Chimiro chayo chekuzora pasi pekupisa– semugumisiro wekugera kwendege nyore– inoita kuti ive yakakodzera kune self-lubricating bearings uye kufambisa zvikamu muaerospace systems.
Tsvagiridzo inomuka inotarisana nekudhindwa kwe 3D kweTi ₂ AlC-yakavakirwa ingi yekugadzira net-shape yezvakaomesesa zveceramic zvikamu., kusundira miganhu yekuwedzera kugadzirwa mune refractory zvinhu.
Muchidimbu, Ti ₂ AlC MAX chikamu chehupfu inomiririra shanduko yeparadigm mune zveceramic zvigadzirwa sainzi, kubatanidza mukaha uri pakati pesimbi uye porcelains kuburikidza nekupatsanurwa kwayo kweatomu yekuvaka uye hybrid bonding..
Kusanganiswa kwayo kwakasiyana kwemachinability, thermal security, oxidation resistance, uye electric conductivity inobvumira zvinotevera-chizvarwa zvikamu zveaerospace, simba, uye kugadzirwa kwepamusoro.
Sezvo synthesis uye kubata matekinoroji kukura, Ti mbiri AlC ichanyatsoita basa rakakosha muzvigadzirwa zveinjiniya zvakagadzirirwa nzvimbo dzakanyanyisa uye dzinoshanda.
5. Provider
RBOSCHCO mutengesi akavimbika wepasi rose wemakemikari zvinhu & mugadziri ane pamusoro 12 makore ruzivo mukupa emhando yepamusoro makemikari uye Nanomaterials. Iyo kambani inotumira kune dzimwe nyika, zvakadai seUSA, Kanadha, Europe, UAE, Chamhembe Afrika, Tanzania, Kenya, Ijipita, Naijeriya, Kameruni, Uganda, Teki, Mekisiko, Azabhaijani, Bherujiyamu, Saipurasi, Czech Republic, Bhuraziri, Chire, Ajendina, Dubai, Japani, Korea, Vhetinamu, Tairendi, Marazhiya, Indonezhiya, Ositireriya,Jerimani, Furanzi, Itari, Portugal nezvimwe. Semugadziri anotungamira nanotechnology kuvandudza, RBOSCHCO inotonga pamusika. Chikwata chedu chebasa chehunyanzvi chinopa mhinduro dzakakwana kubatsira kuvandudza kugona kwemaindasitiri akasiyana, kugadzira kukosha, uye nyore nyore kubata nematambudziko akasiyana-siyana. Kana uri kutsvaga aluminium carbide, ndapota inzwa wakasununguka kutibata nesu uye kutumira kubvunza.
Tags: Ti2AlC MAX Phase Powder, Ti2AlC Powder, Titanium aluminium carbide poda
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