Puas yog titanium pas nrig sib nqus?
Nyob rau hauv siab -kawg teb xws li precision manufacturing, cov cuab yeej kho mob, thiab aerospace, kev tswj cov khoom siv hlau nplaum ncaj qha cuam tshuam rau cov cuab yeej ua haujlwm thiab kev nyab xeeb. Titanium rods, raws li tus neeg sawv cev ntawm titanium alloys, tsis tsuas yog daws cov teeb meem cuam tshuam ntawm cov khoom siv hlau ib txwm muaj nyob hauv thaj chaw muaj zog sib nqus vim lawv tsis yog- cov khoom sib nqus, tab sis kuj tseem ua rau muaj kev cuam tshuam hauv kev txiav -ntev thev naus laus zis xws li kev sib sib zog nqus - hiav txwv tshawb thiab magnetic resonance imaging. Los ntawm cov ntaub ntawv soj ntsuam mus rau engineering xyaum, qhov sib nqus kev ua tau zoo ntawm titanium rods yeej ib txwm ua kom pom tseeb ntawm kev lag luam.
Qhov tsis yog -sib nqus qhov ntawm titanium rods stems los ntawm lawv cov qauv siv lead ua tshwj xeeb thiab kev teeb tsa hluav taws xob. Ntshiab titanium muaj nyob rau ntawm chav tsev kub hauv qhov ze - ntim hexagonal lattice ( -Ti). Cov qauv no ua rau cov electron spin magnetic moments tshem tawm ib leeg tawm, macroscopically nthuav tawm cov khoom paramagnetic. Kev sim cov ntaub ntawv qhia tau hais tias qhov permeability ntawm ntshiab titanium tsuas yog 1.00005 ~ 1.0001 H / m, ze rau lub nqus permeability (1 H / m), thiab nws yuav tsis raug magnetized txawm nyob rau hauv Tesla - theem muaj zog magnetic teb. Noj TC4 titanium alloy ua piv txwv, txawm hais tias theem (lub cev -centered cubic lattice) nyob rau hauv nws + dual-phase qauv qhia ib tug tsis muaj zog ferromagnetic nyiam, tag nrho cov hlau nplaum yog zoo suppressed los ntawm kev ntxiv cov ntsiab lus xws li txhuas thiab vanadium los ua ib qho kev daws teeb meem. Kev ntsuam xyuas tau ua nyob rau hauv qhov tob -Kev tshawb nrhiav dej hiav txwv tau pom tias lub nkoj siab ua nrog TC4 titanium rods pom qhov cuam tshuam qis dua 92% rau cov cim qhia piv rau lub plhaub stainless hlau ntawm qhov tob ntawm 3000 meters thiab geomagnetic teb zog ntawm 0.5 Gauss.
Qhov tsis yog{0}} cov khoom sib nqus ntawm titanium rods qhia tau qhov zoo ntawm qhov tsis tuaj yeem hloov pauv hauv ntau qhov chaw. Hauv kev kho mob, cov khoom siv magnetic resonance imaging (MRI) muaj cov cai nruj heev txog cov khoom sib nqus ntawm cov hlau cog. Kev cog qoob loo ntawm cov hlau tsis muaj hlau tsis zoo tsim cov eddy tam sim no thiab cua sov hauv cov hlau nplaum muaj zog, ua rau muaj kev pheej hmoo ntawm cov ntaub so ntswg kub hnyiab. Titanium rods, vim lawv tsis yog -magnetic xwm, yog dav siv nyob rau hauv cov pob qij txha, kho hniav, thiab lwm yam kev siv. Cov ntaub ntawv kho mob los ntawm lub tsev kho mob saum toj kawg nkaus -tier tau pom tias cov neeg mob siv cov titanium alloy hip pob qij txha muaj 100% tus nqi dhau ntawm MRI tom qab ua raws li -ups, thaum cov neeg mob uas tsis muaj steel hlau cog yuav tsum tau kuaj CT ntxiv rau kev kuaj mob. Hauv kev tsim kho dej hiav txwv, qhov tsis yog{10}} qhov sib nqus ntawm titanium rods yog qhov tseem ceeb rau kev tiv thaiv - submarine tsov rog. Lavxias teb sab nuclear submarine "Kursk" siv titanium alloy los tsim nws cov sonar dome, uas nws xoom- cov khoom sib nqus ua rau cov mines sib nqus ua haujlwm tsis zoo, txhim kho lub submarine stealth peev xwm. Lub titanium alloy sampler ntawm Suav sib sib zog nqus - nkoj tshawb fawb hauv hiav txwv ua haujlwm yam tsis muaj kev cuam tshuam cov hlau nplaum thaum lub sijhawm ua haujlwm hauv South China Sea thaj chaw sib nqus sib nqus, kom ntseeg tau qhov tseeb ntawm cov ntaub ntawv tau txais.
Qhov cuam tshuam ntawm kev siv thev naus laus zis ntawm cov hlau nplaum ntawm titanium rods xav tau kev tswj xyuas nruj. Grain deformation thaum lub sij hawm ua hauj lwm txias tuaj yeem ua rau thaj chaw muaj zog hlau nplaum. Ib lub chaw tsim khoom ntawm aero- cav hniav tau tswj cov permeability fluctuation ntawm TC4 titanium rods nyob rau hauv ± 0.00002 H / m los ntawm kev tswj lub dov kub thiab deformation tus nqi. Kev kho cua sov yog qhov tseem ceeb sib npaug. Thaum cov tshuaj kho qhov kub thiab txias tshaj 900 degree, qhov kev faib ua feem ntawm theem yuav ua rau muaj kev hloov pauv sib nqus. Yog li ntawd, yuav tsum muaj cov txheej txheem graded quenching, tuav ntawm 850℃thiab tom qab ntawd maj mam txias rau hauv chav tsev kub kom ntseeg tau cov qauv kev ruaj ntseg. Lub tuam txhab tsim nkoj tau txo nws qhov kev ua tsis tiav los ntawm 3.7% mus rau 0.15% los ntawm kev tsim cov titanium pas nrig magnetic test database thiab ua 100% sib nqus flux kuaj ntawm txhua pawg ntawm cov khoom.
Los ntawm lub siab- tiv taus lub cev ntawm qhov sib sib zog nqus- hiav txwv sojntsuam mus rau qhov tseeb ntawm cov khoom siv kho mob, cov khoom tsis yog- cov khoom sib nqus ntawm cov titanium rods tau dhau los ua "tsis pom lub cav" hauv siab -kev tsim khoom kawg. Lawv tsis tsuas yog daws cov teeb meem kev sib raug zoo ntawm cov khoom siv ib txwm muaj nyob rau hauv ib puag ncig sib nqus, tab sis kuj tseem txhawb kev hloov kho thev naus laus zis thoob plaws ntau qhov kev lag luam los ntawm kev sib koom tes tshiab hauv cov ntaub ntawv tshawb fawb thiab kev siv thev naus laus zis. Nrog rau qhov nrov ntawm cov thev naus laus zis tshiab xws li 3D luam ntawv thiab superplastic sib sau, cov hlau nplaum tswj qhov tseeb ntawm titanium rods yuav raug txhim kho ntxiv, muab cov khoom siv txhim khu kev qha ntxiv rau kev txiav - ntug teb xws li quantum xam thiab siab - lub zog physics. Qhov no zoo li "tsis yog{10}}magnetic" hlau yog reshaping lub magnetic teb toj roob hauv pes ntawm niaj hnub kev lag luam nyob rau hauv ib tug tshwj xeeb txoj kev.
