Titanium alloy feem ntau hailed raws li lub "universal hlau" hauv biomedical cov ntawv thov los kho cov khoom siv kho hniav, los ntawm cov khoom siv thev naus laus zis.
Vim li cas thiaj tuaj yeem tso cov hlau zoo nkauj "invisibly" sheettle los ntawm tib neeg lub cev thiab cov paascist muaj kev thaj yeeb nrog peb cov ntaub so ntswg? Dab tsi tej yam yees siv 'biological khawv koob' nws puas muaj? Cov khawv koob no los qhov twg los? Cia tshawb qhov tseeb hauv kab lus no.
Los ntawm cov dav hlau dav hlau rau tib neeg lub cev, hloov pauv zoo kawg ntawm titanium alloy
Zaj dab neeg ntawm titanium alloy tau pib hauv kev lag luam aviation. Xyoo 1940, cov kws tshawb fawb tau ntxias tias cov hlau no siv los tsim cov dav hlau ua lag luam tau zoo nrog cov pob txha.
Hauv xyoo 1950, titanium alloys raug nkag mus rau kev ua haujlwm kev kho mob. The initial star product Ti-6Al-4V (containing 6% aluminum and 4% vanadium) performed well, but doctors found that the vanadium element in it may pose health risks. Yog li cov ntaub ntawv cov khoom siv tau pib "tsim cov tshiab tsim qauv" thiab hloov vanadium nrog kev nyab xeeb tshiab xws li Ti-6al-7NB.
Cov kws tshawb fawb tuaj yeem customize titanium alloys tsim nyog rau kev kho mob sib txawv los ntawm kev kho mob sib txawv los ntawm cov khoom xyaw txawv, thiab lwm yam.
Alpha Hom: Siab Ruaj Khwv Tab sis Muaj Zog Nruab Nrab
Beta hom: feem ntau clasce thiab ze tshaj plaws cov pob txha tiag
+ Hom: Ntsuas Ntsuas Lub Zog thiab Kev nruj
Nyob rau hauv lub ntiaj teb ntawm cov ntaub ntawv kho mob, titanium alloy yog zoo li txhua {{}}}}}}}}} ob qho tib si ruaj khov, thiab muaj peev xwm ua ke nrog tib neeg lub cev.
Zoo meej biocompatibility. Dab tsi yog qhov kev ntshai loj tshaj plaws yog tias koj muab ib daim hlau tso rau hauv koj lub cev? Yog lawm, nws yog qhov kev tsis lees paub. Tab sis titanium alloy tuaj yeem ua rau muaj kev thaj yeeb nyab xeeb nrog tib neeg lub cev, ua tsaug rau nws cov kev txawj tshwj xeeb ntawm kev tsim cov yeeb yaj kiab tiv thaiv (titanium dioxide txheej). Nws yog yuav luag tsis tau muaj Insoluble nyob rau hauv tib neeg ib puag ncig, tuaj yeem thaiv kev tso cov hlau ions, thiab yuav tsis yog nws yog nws yooj yim rau kev tiv thaiv kev tiv thaiv kab mob.
Cov yeeb yaj kiab txheej yog muaj peev xwm adsorbing calcium thiab phosphate, txhim kho pob txha pob txha thiab ua kom cov pob txha ua kom ncaj qha rau cov khoom siv hluav taws xob ". Ntawm qhov tod tes, stainless hlau thiab cobalt chromium alloys paub txog tso cov npib tsib xee thiab chromium ions ntawm qeeb uas muaj peev xwm ua kom tsis haum lossis tshuaj lom. Lawv feem ntau nyob rau hauv cov nqaij mos thiab tsis tuaj yeem yog biocompible tiag tiag.
Muaj zog thiab lub teeb. Lub superpower thib ob ntawm titanium alloy yog nws cov khoom siv neeg. Cov kws kho mob tau pom tias cov kws kho mob ua haujlwm zoo tshaj plaws yuav tsum muaj ob yam ntxwv- muaj zog txaus los tiv thaiv txhua hnub, thiab elastic txaus kom ze rau cov pob txha tiag. Titanium alloy txig tau raws li cov tseev kom muaj.
Firstly, nws yog lub teeb ci, nrog lub ntom ntom, nrog ib nrab ntawm cov hlau, tsis tau nws lub zog zoo sib xws; Thib ob, nws elasticity yog ib nrab. Tus tshiab titanium alloy muaj cov modulus loj heev ntawm kwv yees li 60gpa (gigapascal), uas yog ze rau tib neeg lub pob txha 30gpa; Thib peb, nws yog foob desistant, nws tuaj yeem bent lab ntawm lub sij hawm tsis muaj fracturing.
Vim li cas tib neeg lub cev tsis lees txais titanium alloy?
Titanium alloy tau pom ib daim ntawv thov kev kho mob niaj hnub vim nws cov kev kho hniav tag nrho, suav nrog kev kho hniav, cov pa hluav taws xob thiab lwm yam. Yog li, vim li cas tsis tib neeg lub cev tsis lees txais titanium alloy? Qhov no pib nrog kev tsim kho cov lus qhia ua ke ntawm lub interface ntawm pob txha nqaij thiab tiv thaiv kab mob - pob txha tiv thaiv.
Thov cov lus hais
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