Hnub no,TopTechyuav ua kom paub qee qhov nta thiab cov haujlwm tshwj xeeb ntawm titanium:
(1) Tsawg ceev, siab zog, thiab muaj zog tshwj xeeb
Qhov ceev ntawm titanium yog 4.51g / cm3, uas yog 57 feem pua ntawm cov hlau. Titanium tsawg dua ob zaug hnyav li txhuas thiab peb zaug muaj zog li txhuas. Lub zog tshwj xeeb (qhov sib piv ntawm lub zog / ntom) ntawm titanium alloy yog qhov loj tshaj plaws ntawm cov khoom siv feem ntau siv. Lub zog tshwj xeeb ntawm titanium alloy yog 3.5 npaug ntawm stainless hlau; 1.3 npaug ntawm aluminium alloy; 1.7 npaug ntawm magnesium alloy, yog li nws yog qhov tseem ceeb rau kev lag luam aerospace. ntawm structural khoom.
(2) Zoo heev corrosion kuj
Lub passivation ntawm titanium nyob ntawm lub xub ntiag ntawm oxide zaj duab xis, thiab nws cov corrosion kuj nyob rau hauv ib tug oxidizing nruab nrab yog zoo dua li nyob rau hauv ib tug txo qhov nruab nrab. Cov nqi siab ntawm corrosion tshwm sim hauv kev txo cov xov xwm. Titanium tsis corroded nyob rau hauv ib co corrosive media, xws li seawater, ntub chlorine, chlorite thiab hypochlorite daws, nitric acid, chromic acid, hlau chlorides, sulfides thiab organic acids. Txawm li cas los xij, hauv xov xwm uas cuam tshuam nrog titanium los tsim hydrogen (xws li hydrochloric acid thiab sulfuric acid), titanium feem ntau muaj qhov corrosion ntau dua. Txawm li cas los xij, yog tias ib qho me me ntawm oxidant ntxiv rau cov kua qaub, ib zaj duab xis passivation yuav tsim rau ntawm titanium nto. Yog li ntawd, titanium yog resistant rau corrosion nyob rau hauv muaj zog sulfuric acid-nitric acid los yog hydrochloric acid-nitric acid sib tov, txawm nyob rau hauv hydrochloric acid muaj dawb chlorine. Kev tiv thaiv oxide zaj duab xis ntawm titanium yog feem ntau tsim thaum cov hlau ntsib dej, txawm nyob rau hauv me me dej los yog dej vapor. Yog tias titanium raug rau ib puag ncig oxidizing zoo heev uas tsis muaj dej txhua, nws yuav oxidize sai thiab hnov mob hnyav, feem ntau txawm spontaneously igniting. Cov xwm txheej zoo li no tau tshwm sim hauv cov tshuaj tiv thaiv ntawm titanium nrog fuming nitric acid uas muaj ntau tshaj nitrogen oxide thiab nrog cov tshuaj chlorine qhuav. Yog li txhawm rau tiv thaiv cov kev tshwm sim zoo li no, yuav tsum muaj qee qhov dej.
(3) Ua haujlwm kub zoo
Feem ntau txhuas poob nws cov khoom qub ntawm 150 degree, stainless hlau poob nws cov khoom qub ntawm 310 degree, thiab titanium alloys tseem tuav cov khoom zoo ntawm ib puag ncig 500 degree. Thaum qhov ceev ntawm lub dav hlau mus txog 2.7 npaug ntawm lub suab ceev, qhov kub ntawm lub dav hlau qauv nce mus txog 230 degree, aluminium alloy thiab magnesium alloy tsis tuaj yeem siv, thiab titanium alloy tuaj yeem ua tau raws li qhov yuav tsum tau ua. Titanium muaj cov cua kub zoo thiab siv rau hauv cov disks thiab cov hniav ntawm aero-engine compressors thiab daim tawv nqaij ntawm lub rear fuselage ntawm aircraft.
(4) Kev ua haujlwm kub tsis zoo
Lub zog ntawm qee cov titanium alloys (xws li Ti-5AI-2.5SnELI) nce nrog qhov kub thiab txias, tab sis cov yas tsis txo qis ntau, thiab nws tseem muaj qhov zoo ductility thiab toughness ntawm qhov kub thiab txias. , yog li nws yog haum rau siv nyob rau hauv ultra-tsawg kub. Nws tuaj yeem siv rau ntawm cov kua hydrogen qhuav thiab kua oxygen foob pob ua ntxaij tshuab, lossis ua cov thawv ntim kub qis thiab cov tso tsheb hlau luam tso rau ntawm lub dav hlau manned.
(5) Tsis-magnetic
Titanium yog non-magnetic, nws yog siv nyob rau hauv submarine hulls thiab yuav tsis ua rau tawg ntawm mines.
(6) Me thermal conductivity
Lub thermal conductivity ntawm titanium yog me me, tsuas yog 1/5 ntawm hlau, 1/13 ntawm txhuas, thiab 1/25 ntawm tooj liab. Cov thermal conductivity tsis zoo yog qhov tsis zoo ntawm titanium, tab sis cov yam ntxwv ntawm titanium no tuaj yeem siv rau hauv qee yam kev siv.
(7) Tsawg elastic modulus
Lub elastic modulus ntawm titanium tsuas yog 55 feem pua ntawm cov hlau, uas yog qhov tsis zoo thaum siv los ua cov khoom siv.
(8) Tensile lub zog yog ze heev rau yielding zog
Lub zog tensile ntawm Ti-6AI-4V titanium alloy yog 960MPa thiab lub zog tawm los yog 892MPa, qhov sib txawv ntawm ob tsuas yog 58MPa.
(9) Titanium yog yooj yim oxidized ntawm qhov kub thiab txias
Titanium muaj lub zog ruaj khov nrog hydrogen thiab oxygen, thiab yuav tsum tau them nyiaj rau kev tiv thaiv oxidation thiab hydrogen absorption. Titanium welding yuav tsum tau ua raws li kev tiv thaiv argon tiv thaiv kev sib kis. Titanium tubes thiab nplooj ntawv yuav tsum tau kho cua sov nyob rau hauv lub tshuab nqus tsev, thiab ib tug micro-oxidizing cua yuav tsum tau tswj thaum lub sij hawm kho cua sov ntawm titanium forgings.
(10) Tsis tshua muaj kev tiv thaiv damping
Lub tswb yog ua los ntawm titanium thiab lwm yam khoom siv hlau (tooj liab, hlau) nrog tib lub cev thiab loj. Yog tias koj ntaus txhua lub tswb nrog tib lub zog, koj yuav pom tias lub tswb ua los ntawm titanium oscillates tau ntev, uas yog, lub zog muab rau lub tswb tsis yooj yim dissipated los ntawm kev tawm tsam, yog li peb hais tias kev ua haujlwm damping ntawm titanium yog tsawg.
Peb lub luag haujlwm tshwj xeeb ntawm titanium
(1) Lub cim xeeb muaj nuj nqi
Nws yog hais txog lub peev xwm ntawm Ti-50 feem pua Ni (atomic) alloy los kho nws cov qauv qub nyob rau hauv qee qhov kub thiab txias, uas yog hu ua cov duab nco alloy.
(2) Superconducting muaj nuj nqi
Nws hais txog NbTi alloy. Thaum qhov kub thiab txias poob kom ze rau qhov xoom, cov hlau ua los ntawm NbTi alloy yuav poob nws qhov tsis kam. Thaum twg cov tam sim no loj dhau mus, cov hlau yuav tsis kub thiab tsis muaj zog. NbTi yog hu ua superconducting khoom.
(3) Hydrogen cia muaj nuj nqi
Hais txog Ti-50 feem pua Fe (atomic) alloy, uas muaj peev xwm nqus tau cov hydrogen ntau. Siv cov yam ntxwv ntawm TiFe no, hydrogen tuaj yeem khaws cia kom nyab xeeb, uas yog, nws tsis tas yuav siv lub tog raj kheej roj siab los khaws cov hydrogen. Raws li qee qhov xwm txheej, TiFe tuaj yeem tso tawm hydrogen, thiab TiFe hu ua cov khoom siv hluav taws xob.
Hu rau
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