1. Litšobotsi tsa Lintho le Moralo oa Sebopeho
1.1 Sebopeho le Mekhahlelo ea Crystalline ea Alumina
( Alumina Ceramic Tubes)
Alumina (Al Two O PEDI) li-tubes tsa ceramic li entsoe haholo ka aluminium oxide e phahameng, ka maemo a ho hlweka ka tlwaelo a fapaneng ho tloha ho 90% ho 99.8%, ho ipapisitse le kopo e lakatsehang.
Karolo e ka sehloohong ea kristale e teteaneng ka ho feletseng, li-tubes tse nang le mocheso o phahameng oa mocheso ke α-alumina (taemane), e bonts'ang moralo oa kristale oa trigonal le botsitso bo ikhethang ba thermodynamic.
Mokhahlelo ona o fetoha ho tloha ho precursor hydroxides (mohlala, boehmite kapa gibbsite) ho α-alumina ho etsahala ho feta 1100 ° C mme e baka botenya, interlocking microstructure e fanang ka matla a phahameng a mechine le khanyetso ea lik'hemik'hale.
Litšobotsi tsa bohloeki bo boholoanyane (≥ 99.5%) sebelisa matla ka ho fetisisa, apara khanyetso, le ts'ebetso ea dielectric, ha litharollo tsa bohloeki bo tlase li ka kenyelletsa mekhahlelo e meng joalo ka mekhahlelo ea moeli oa lijo-thollo tsa mullite kapa tse betliloeng ho theola theko kapa khōlo e futhumatsang ea dressmaker..
Bokhoni ba ho laola boemo ba lijo-thollo, porosity, le sebopeho sa sethala nakong ea ho ts'oaroa se lumella baenjiniere ho etsa lintlafatso tsa alumina tubes bakeng sa litlhoko tse itseng tsa bohlokoa libakeng tse fapaneng tsa khoebo.
1.2 Mechini, Mocheso, le Boleng ba Motlakase
Li-tubes tsa ceramic tsa alumina li bonts'a motsoako o ikhethileng oa thepa ea 'mele e etsang hore e be libaka tsa bohlokoa tsa boenjiniere tse tsebahalang.
Ka Vickers ho tiea hofetang 1500 HV, ba sireletsehile haholo ho abrasion le khoholeho, ho feta litšepe tse ngata le li-polymers lits'ebetsong tse tloaelehileng.
Matla a bona a hatellang a ka fihla 2000 MPa, ho nolofalletsa ts'ebeliso ea sebopeho tlasa lithane tse phahameng tsa mochini, ha flexural stamina ka tlwaelo e tloha ho 300 ho 500 MPa, ho itshetlehile ka ho teteana le ho roala bokahodimo.
Thermally, alumina e boloka ts'ireletso hoo e ka bang 1700 ° C libakeng tse nang le oxidizing, e nang le coefficient e tlase ea kholo ea mocheso (~ 8 ppm/K), e eketsang kganyetso e ntle haholo ya mocheso ha e bopilwe ka nepo.
Le hoja conductivity ea eona ea mocheso (~ 30 W/(m · K)) e itekanetseng ha e bapisoa le litšepe kapa aluminium nitride, e lekane bakeng sa lits'ebetso tse 'maloa tsa mocheso o phahameng moo ho kenngoa ha motlakase le botsitso ba meralo li tlang pele..
Ka motlakase, alumina ke insulator e ikhethang e nang le boholo ba resistivity > 10 ¹⁴ Ω · cm le dielectric tse thata (> 15 kV/mm), e etsa hore e be e nepahetseng bakeng sa phepelo ea motlakase, li-sensor housings, le insulation ea matla a phahameng.
( Alumina Ceramic Tubes)
2. Mekhoa ea Tlhahiso le Taolo ea Dimensional
2.1 Mekhoa ea ho theha le ho theha
Ho etsoa ha li-tubes tsa alumina ceramic ho kenyelletsa mekhoa e tsoetseng pele ea ho theha e etselitsoeng ho fihlela boholo bo nepahetseng., tumellano ya bokahodimo ba lebota, le bokaholimo ba boleng bo holimo.
Mekhoa e tloaelehileng e kenyelletsa extrusion, ho sututsa ka isostatic, le ho hasana ho thellang, e 'ngoe le e' ngoe e tsamaisana le mefuta e fapaneng ea litekanyo le litlhoko tse sebetsang hantle.
Extrusion e sebelisoa ka nako e telele, li-tubes tse otlolohileng tse nang le li-cross-section tse tloaelehileng, moo polasetiki ea alumina peista e hlokehang ka lefi le sehiloeng ho bolelele pele ho omisa le sintering.
Bakeng sa li-tubes tse phahameng tse nepahetseng kapa tse tšesaane, chilly isostatic push (CIP) e sebelisa khatello e tsitsitseng ho tloha litaelong tsohle ho ea ho 'mele e nyenyane e tala, ho fokotsa ho sotha le ho ntlafatsa density homogeneity.
Ho etsa lilaete, ho kenyelletsa ho beoa ha ho emisoa ha alumina ea colloidal (thella) holim'a sehoete sa samente se phunyeletsang le hlobo, e ntle haholo bakeng sa lijeometri tse rarahaneng kapa tse bophara bo boholo tse nang le botenya bo fapaneng ba lebota.
Kamora ho bopa, li-tubes li omella ka hloko ho emisa ho robeha, ho lateloa ke mokhathala o kopanyang le mocheso o phahameng oa sintering (1500– 1650 °C )ho finyella setsoalle se feletseng le botsitso ba dimensional.
2.2 Qetella le Taolo ea Boleng
Ts'ebetso ea post-sintering joalo ka ho sila ho se na setsi, lapping, 'me ho khanya ho sebelisoa ho finyella mamello e thata, boreledi ba bokahodimo, le bophara bo nepahetseng ba kahare le kantle.
Mehano e thata joalo ka ± 0.01 mm lia khoneha bakeng sa lits'ebetso tsa bohlokoa ts'ebetsong ea semiconductor kapa lisebelisoa tse utloahalang.
Bokaholimo ba sebaka bo ka fokotsoa ho Ra < 0.1 µm, decreasing bit trapping and improving compatibility with ultra-high vacuum (UHV) or cleanroom atmospheres.
Mekhoa ea liteko e sa senyeheng– ho kenyelletsa tlhahlobo ea ultrasonic, X-ray radiography, le dae penetrant screening– netefatsa botsitso ba sebopeho le ho se be teng ha maqhetso kapa dibaka.
Dimensional metrology e sebelisa lisebelisoa tsa coordinate gauging (CMM) kapa laser scanning e netefatsa ho lumellana le litlhaloso tsa sebopeho, ka ho khetheha bakeng sa mabelo a motho ka mong kapa a phahameng haholo.
3. Sebetsa se Sebetsang Mabakeng a Mathata
3.1 Ho hanyetsa ho senyeha ha Mocheso le Lik'hemik'hale
E 'ngoe ea melemo e matla ka ho fetisisa ea alumina ceramic tubes ke bokhoni ba bona ba ho mamella mathata a feteletseng a mocheso le lik'hemik'hale moo litšepe le li-polymer li khaotsang ho sebetsa..
Li lula li tsitsitse 'me li tšoarella ka mokhoa o ts'oanelang ts'ebeletso e tsoelang pele maemong a mocheso holimo 1500 °C, ho etsa hore e be tse loketseng bakeng sa lilara tsa sebopi, likhetla tsa tšireletso tsa thermocouple, le li-tubes tse futhumatsang tse benyang.
Inertness ea bona ea ho qhibiliha litšepe (mohlala, boima bo bobebe ba aluminium, zinki, le li-alloys tse se nang ferrous), letsoai le qhibilihisitsoeng, le li-acid tse ngata (ntle le hydrofluoric le hot phosphoric acid) e lumella tšebeliso ea lisebelisoa tsa ho sebetsana le metallurgical le lik'hemik'hale.
Ho oxidizing le ho fokotsa maemo a leholimo, alumina ha e nyenyefatse kapa ha e bake maikutlo a sa batleheng, ho boloka bohloeki ba ts'ebetso ho semiconductor le tlhahiso ea likhalase.
Boiketlo bona ba lik'hemik'hale bo boetse bo thibela tšilafalo mekhoeng ea ho sebetsana le metsi a hloekileng haholo, ho kenyeletsoa le tse sebelisoang liindastering tsa meriana le lijo.
3.2 Motlakase oa Insulation le Plasma Resistance
Litlhophisong tsa motlakase le plasma, li-alumina tubes li sebetsa e le lithibelo tse sireletsang tse bolokang botšepehi ba potoloho tlas'a motlakase o phahameng le mocheso o phahameng.
Li sebelisoa bakeng sa phepelo e phahameng haholo (FIHLA) mabone, moo li kenyelletsang likhase tse ionized maemong a mocheso a fetang 1000 ° C ha e ntse e mamella matla a motlakase a li-kilovolts tse 'maloa.
Lits'ebetsong tsa plasma etching le deposition, li-tubes tsa alumina li sebetsa joalo ka lifensetere tsa dielectric kapa likarolo tsa phepelo ea khase, ho ema ka ion barrage le ho palama baesekele ka mochesong ntle le ho robeha kapa ho ntsha moya.
Tahlehelo ea bona e fokotsehileng ea dielectric le khanyetso e phahameng ea arc e qoba ho lateloa ha motlakase le ho se sebetse hantle, ho etsa bophelo bo itseng ba nako e telele ho li-switchgear le likarolo tsa phetisetso ea matla.
Meaho ena e bohlokoa bakeng sa ho boloka ts'ireletso ea ts'ebetso le ts'epo ea lisebelisoa lits'ebetsong tse tsoetseng pele tsa tlhahiso le matla.
4. Lisebelisoa tsa Indasteri le Tse Tsoang
4.1 Thepa e Phahameng ea Mocheso le ea Khoebo
Li-tubes tsa ceramic tsa alumina ke karolo ea mekhoa e mengata e fapaneng ea khoebo e hlokang botsitso tlas'a mathata a tebileng.
Ts'ebetsong ea mocheso, li sebetsa e le mekotla ea tšireletso bakeng sa li-thermocouples le li-burner li-kilns, lihitara, le lisebelisoa tsa phekolo ea mofuthu, ho sireletsa lintho tse hlokolosi tikolohong e thata le moaparo oa mochini.
Ts'ebetsong ea metsi, ba tsamaisa lik'hemik'hale tse mabifi, li-slurries, le likhase tse nang le mocheso o phahameng libakeng tsa ho hloekisa petrochemical, limela tsa desalination, le mekhoa ea ho chesa litšila.
Ho hanyetsa ha bona mocheso oa mocheso ho etsa hore ho futhumale ka potlako le ho pholisa lipotoloho ntle le ho hlōleha, molemo oa bohlokoa mekhoeng ea khoebo ea cyclic.
Tlhahisong ea likhalase, li-tubes tsa alumina li thusa ho potoloha ha likhalase tse nang le metsi le lisebelisoa tse thusang ho nts'etsapele, ho ema ho fihlela khoholehong ho tsoa ho viscous, ho qhibiliha hoa mocheso o phahameng.
4.2 Theknoloji e Tsoetseng Pele le Tšebeliso ea Bokamoso
Ho feta litšebeliso tse tloaelehileng tsa khoebo, li-tubes tsa alumina li fumana mesebetsi e mecha ho mahlale a morao-rao a tsoetseng pele.
E entsoe ka semiconductor, ultra-pure alumina tubes li sebelisoa ho beha mouoane oa lik'hemik'hale (CVD) li-activator le litsamaiso tsa ho kenya ion, moo tlhahiso ea likaroloana le litšila tsa tšepe li tlamehang ho fokotseha.
Ka lisebelisoa tsa kliniki, biocompatible alumina tubes e sebetsa e le likarolo tse sireletsang lisebelisoa tsa bongaka, li-implants tsa meno, le diyuniti tsa ho lemoha mafu.
Boithuto bo ntse bo hlahloba li-tubes tsa alumina tse sebetsang hantle tse nang le li-sensor tse kentsoeng kapa mesaletsa e tsamaisang bakeng sa tlhahlobo e bohlale ea sebopeho sebakeng sa sefofane le lisebelisoa tsa matla..
Tlhahiso e eketsehileng (3D khatiso) ea alumina e ntse e hlaha e le mokhoa oa ho theha li-geometri tse rarahaneng tse nang le likanale tsa kahare kapa lipina tse hlophisitsoeng, ho lumella li-exchange tsa mocheso le li-microreactors tsa moloko o latelang.
Ha mafapha a ntse a tobane le ts'ebetso e kholoanyane, mekhoa e hloekileng, le ts'epo e phahameng, li-tubes tsa alumina ceramic li ntse li tsoela pele ho fetoha e le likarolo tse thusang litsing tsa theknoloji ea sejoale-joale.
Ka kakaretso, li-tubes tsa alumina ceramic li emela sehlopha se seng se holile empa se ntse se tsoela pele ka matla sa thepa ea boenjiniere, ho kopanya mocheso o ikhethang, mochine, le ts'ebetso ea motlakase ka har'a tsela e ikemetseng.
Ho ba bonolo ha bona maemong a matla ho tiisa bohlokoa ba bona bo tsoelang pele lits'ebetsong tse peli tse thehiloeng khoebong le lits'ebetsong tse ntseng li hlaha tsa boemo bo holimo..
5. Morekisi
Advanced Ceramics e thehiloe ka Mphalane 17, 2012, ke khoebo ea theknoloji e phahameng e ikemiselitseng ho etsa lipatlisiso le nts'etsopele, tlhahiso, ho sebetsa, thekiso le lits'ebeletso tsa tekheniki tsa lisebelisoa le lihlahisoa tse amanang le ceramic. Lihlahisoa tsa rona li kenyelletsa empa ha li felle feela ho Lihlahisoa tsa Ceramic tsa Boron Carbide, Lihlahisoa tsa Ceramic tsa Boron Nitride, Silicon Carbide Lihlahisoa tsa Ceramic, Silicon Nitride Lihlahisoa tsa Ceramic, Lihlahisoa tsa Ceramic tsa Zirconium Dioxide, etc. Haeba u thahasella, ka kopo ikutloe u lokolohile ho ikopanya le rona.
Li-tag: Alumina Ceramic Tubes, boholo ba li-tubes tsa alumina, tube ea alumina
Lingoliloeng tsohle le litšoantšo li tsoa Marang-rang. Haeba ho na le litaba tsa copyright, ka kopo ikopanye le rona ka nako ho hlakola.
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